From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613155959; cv=none; d=zohomail.com; s=zohoarc; b=Yf1EpNKvO7HJQjhHx7pYyllxkLamHiUR/1ERlSoLXQcfi4u5yPz1KcITFBynIWUmDlgm4F3xP8AfQNVlF7j5hE4ayEgIKzjSciDPIqyfwOfksu9XIJzwZd0wBJhCkeP/GMSclZTtTqLA7NFncL1zdReG9TcJiC7Go0JYh4kOjKs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613155959; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=xGNWj3WniKXXd4jIRcOYjihD3VZhshb33k4IkX9ycXc=; b=I1LhE1HztrYx6hafF0HyQJebxZaySUhXtTljLaosw9vLu90Bb/NMhPw2YbR3thadWrsIacevZFirk3qKXWEFTR9S+FzkKiEW6AsXWk4SG13c1AqYBCmtmtGkTqkFWpO7TtR3Bjh5ph0cfYk+bjsUw7XJt9u4Yam2FwDwsCi2mUs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613155959439171.7323564185018; Fri, 12 Feb 2021 10:52:39 -0800 (PST) Received: from localhost ([::1]:46958 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdYL-0003Wq-AQ for importer@patchew.org; Fri, 12 Feb 2021 13:52:29 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39232) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdV8-0001Ux-3F for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:11 -0500 Received: from mail-pj1-x102b.google.com ([2607:f8b0:4864:20::102b]:36707) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdV4-0007ey-OD for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:09 -0500 Received: by mail-pj1-x102b.google.com with SMTP id gx20so158584pjb.1 for ; Fri, 12 Feb 2021 10:49:06 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xGNWj3WniKXXd4jIRcOYjihD3VZhshb33k4IkX9ycXc=; b=W7Q8bOgUVgvmvKEupfuuBtlJYdB+vZJCcDbVspVs0vIehaR4RAs4NcjowOpe1tdJ7Y G3HxcQSo+kEzmMdxWl+AT8xej38BdUbRqVFl9FKCEDNUfhcgzcgL1rC6nbgTu3YmBs/u nq7lHw2iXqZBe75vxL//Fx+IK6LyAipUxpDkaYvQoAMEda/k71uVqIA27XZomAW1OKg3 2CExxyBi6gljYE5o39qh4EIPw+rJiNMTl7p+sR0g+wT9kD4mocbsMQcXKIunDVgzww+B izopCKuW5o8JrJN1C1mx/ZeI8esgeZKbALdltBIsnn2VGN/Daw8ojO2fXqqTPAeTZhJg ANYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xGNWj3WniKXXd4jIRcOYjihD3VZhshb33k4IkX9ycXc=; b=IUrdWa4Fd0OjKFYSs4E+KjgTA+V2bbnrLGBY1sEtSnT7Sc0mxU9Sk8CDZASk9wIYp1 c4sbiMl72Qvmc0Cod9uy9vxrVe2TlNxNs4eOwqzI/wa3PZZwiFlqw4ot6dgstIdj0gNe Gci8zqFwVovp718KexhPe9nDfpGOCwMLufB6SXEr2CMqFZT78KZKkg/vmBWVAl5IkmQQ pi9SPxyrkklVGgZYtvKrK5prhFBNsNKT67qbo3kfy+jA8BqH8WiATqaO1tjWUImdTDeh RfGU3bLG35JCgIi1MTu+lcxEp4aaZShQuRLl3hGTKb2+Bw0yyEt6IoF2MdxAReJdyrCC eYIA== X-Gm-Message-State: AOAM531Ran3geihwL2bq1danXaEJ3/0BzU2Sz55UqoYCfl3xBTHQbOm5 jeNFN8Fk7Vw4VO5zLumUOw6gNmSrx75lbg== X-Google-Smtp-Source: ABdhPJzAH88SP73REgIIBsH8GZjxBWBmucbZE5nLlJ+V2gJnolC2qJNjJbGPd9eJSp0HJxQ1mrA/Bw== X-Received: by 2002:a17:90a:43a7:: with SMTP id r36mr3993858pjg.189.1613155745348; Fri, 12 Feb 2021 10:49:05 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 01/31] tcg: Introduce target-specific page data for user-only Date: Fri, 12 Feb 2021 10:48:32 -0800 Message-Id: <20210212184902.1251044-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102b; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" This data can be allocated by page_alloc_target_data() and released by page_set_flags(start, end, prot | PAGE_RESET). This data will be used to hold tag memory for AArch64 MTE. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu-all.h | 42 +++++++++++++++++++++++++++++++++------ accel/tcg/translate-all.c | 28 ++++++++++++++++++++++++++ linux-user/mmap.c | 4 +++- linux-user/syscall.c | 4 ++-- 4 files changed, 69 insertions(+), 9 deletions(-) diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index cfb1d79331..af555f1798 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -264,15 +264,21 @@ extern intptr_t qemu_host_page_mask; #define PAGE_EXEC 0x0004 #define PAGE_BITS (PAGE_READ | PAGE_WRITE | PAGE_EXEC) #define PAGE_VALID 0x0008 -/* original state of the write flag (used when tracking self-modifying - code */ +/* + * Original state of the write flag (used when tracking self-modifying cod= e) + */ #define PAGE_WRITE_ORG 0x0010 -/* Invalidate the TLB entry immediately, helpful for s390x - * Low-Address-Protection. Used with PAGE_WRITE in tlb_set_page_with_attrs= () */ -#define PAGE_WRITE_INV 0x0040 +/* + * Invalidate the TLB entry immediately, helpful for s390x + * Low-Address-Protection. Used with PAGE_WRITE in tlb_set_page_with_attrs= () + */ +#define PAGE_WRITE_INV 0x0020 +/* For use with page_set_flags: page is being replaced; target_data cleare= d. */ +#define PAGE_RESET 0x0040 + #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) /* FIXME: Code that sets/uses this is broken and needs to go away. */ -#define PAGE_RESERVED 0x0020 +#define PAGE_RESERVED 0x0100 #endif /* Target-specific bits that will be used via page_get_flags(). */ #define PAGE_TARGET_1 0x0080 @@ -287,6 +293,30 @@ int walk_memory_regions(void *, walk_memory_regions_fn= ); int page_get_flags(target_ulong address); void page_set_flags(target_ulong start, target_ulong end, int flags); int page_check_range(target_ulong start, target_ulong len, int flags); + +/** + * page_alloc_target_data(address, size) + * @address: guest virtual address + * @size: size of data to allocate + * + * Allocate @size bytes of out-of-band data to associate with the + * guest page at @address. If the page is not mapped, NULL will + * be returned. If there is existing data associated with @address, + * no new memory will be allocated. + * + * The memory will be freed when the guest page is deallocated, + * e.g. with the munmap system call. + */ +void *page_alloc_target_data(target_ulong address, size_t size); + +/** + * page_get_target_data(address) + * @address: guest virtual address + * + * Return any out-of-bound memory assocated with the guest page + * at @address, as per page_alloc_target_data. + */ +void *page_get_target_data(target_ulong address); #endif =20 CPUArchState *cpu_copy(CPUArchState *env); diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 81d4c83f22..bba9c8e0b3 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -114,6 +114,7 @@ typedef struct PageDesc { unsigned int code_write_count; #else unsigned long flags; + void *target_data; #endif #ifndef CONFIG_USER_ONLY QemuSpin lock; @@ -2740,6 +2741,7 @@ int page_get_flags(target_ulong address) void page_set_flags(target_ulong start, target_ulong end, int flags) { target_ulong addr, len; + bool reset_target_data; =20 /* This function should never be called with addresses outside the guest address space. If this assert fires, it probably indicates @@ -2754,6 +2756,8 @@ void page_set_flags(target_ulong start, target_ulong = end, int flags) if (flags & PAGE_WRITE) { flags |=3D PAGE_WRITE_ORG; } + reset_target_data =3D !(flags & PAGE_VALID) || (flags & PAGE_RESET); + flags &=3D ~PAGE_RESET; =20 for (addr =3D start, len =3D end - start; len !=3D 0; @@ -2767,10 +2771,34 @@ void page_set_flags(target_ulong start, target_ulon= g end, int flags) p->first_tb) { tb_invalidate_phys_page(addr, 0); } + if (reset_target_data && p->target_data) { + g_free(p->target_data); + p->target_data =3D NULL; + } p->flags =3D flags; } } =20 +void *page_get_target_data(target_ulong address) +{ + PageDesc *p =3D page_find(address >> TARGET_PAGE_BITS); + return p ? p->target_data : NULL; +} + +void *page_alloc_target_data(target_ulong address, size_t size) +{ + PageDesc *p =3D page_find(address >> TARGET_PAGE_BITS); + void *ret =3D NULL; + + if (p->flags & PAGE_VALID) { + ret =3D p->target_data; + if (!ret) { + p->target_data =3D ret =3D g_malloc0(size); + } + } + return ret; +} + int page_check_range(target_ulong start, target_ulong len, int flags) { PageDesc *p; diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 810653c503..c693505b60 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -599,6 +599,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t target_prot, } } the_end1: + page_flags |=3D PAGE_RESET; page_set_flags(start, start + len, page_flags); the_end: trace_target_mmap_complete(start); @@ -792,7 +793,8 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong ol= d_size, new_addr =3D h2g(host_addr); prot =3D page_get_flags(old_addr); page_set_flags(old_addr, old_addr + old_size, 0); - page_set_flags(new_addr, new_addr + new_size, prot | PAGE_VALID); + page_set_flags(new_addr, new_addr + new_size, + prot | PAGE_VALID | PAGE_RESET); } tb_invalidate_phys_range(new_addr, new_addr + new_size); mmap_unlock(); diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 34760779c8..6001022e96 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -4632,8 +4632,8 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_en= v, raddr=3Dh2g((unsigned long)host_raddr); =20 page_set_flags(raddr, raddr + shm_info.shm_segsz, - PAGE_VALID | PAGE_READ | - ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE)); + PAGE_VALID | PAGE_RESET | PAGE_READ | + (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE)); =20 for (i =3D 0; i < N_SHM_REGIONS; i++) { if (!shm_regions[i].in_use) { --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156094; cv=none; d=zohomail.com; s=zohoarc; b=Ith2AJehJl2qxru+zz+wBzYt2TskEa4aH0LApox3uo2fLMkInYj4H2FciWUe7EkhpT66FGI1XqDXW9N/gFrxHRhYY2m6FKHietees1+/+CIWd4McMhpjQVrkDKSMgZYo28rAZ4H0+PKPt3rVZnTs4rsMP+EOf16X+eYW16ZflXk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156094; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=oq1eUfNJ5Tqc2veFWdzskdMZSlKpLHVOgyNg6GN6+/A=; b=MxqfSX0HUGA7xgzxnE1jlvzn204CZVJQJCtuy6Sw6J7cdzFgrgl4gIgcz+LlR/PfO7b/dHZUj4PcRiEIf1Ss69ULsW5eoQ+mpj71FtMUeiOoin9mlZ52SPznRW9YUuZNrfAkIaKiN9UizQiflXUwe4nOcSUCphrNxDX6IYtsxZo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156094523309.1818888941086; Fri, 12 Feb 2021 10:54:54 -0800 (PST) Received: from localhost ([::1]:55460 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdad-0007Ho-Db for importer@patchew.org; Fri, 12 Feb 2021 13:54:51 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39258) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVB-0001VI-8z for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:13 -0500 Received: from mail-pl1-x630.google.com ([2607:f8b0:4864:20::630]:35003) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdV6-0007fq-EN for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:12 -0500 Received: by mail-pl1-x630.google.com with SMTP id g20so332478plo.2 for ; Fri, 12 Feb 2021 10:49:07 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=oq1eUfNJ5Tqc2veFWdzskdMZSlKpLHVOgyNg6GN6+/A=; b=hMl1JnXxUm+aWxE69SXTyDaTzFB7ZU6bT5+zPQYO/ppU8c1bR5WTqwdwk6UUnsIuxN auWyIsSDmCEx8cEq0gzpUj6UItq1ABoUv+ks9CD6n7TYK939KF4Wl4jIlgr2iKXcq58h oLN/ePq3UgA/7wH7tklb0++9vePXstKE6fuLDjvFW5uuWj2cR+AtdwnFUHInOf2oX1vo iIp8c209mt8krXoLtawg0UIcCrLYzEnOboBIBRx0/pnD9DWuueyMoYvMV1s4fDZeN8OE 5BeXAka5wHd+z1w4KNtSESWfwz8L2sLt3o5JZ/PMiyYlzQHYodN4cuOXh7tX6BORk+zV Dp0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=oq1eUfNJ5Tqc2veFWdzskdMZSlKpLHVOgyNg6GN6+/A=; b=sMUyO+lXzwEmG5ioN58AHv4WjmLyM3AwOVkbkGi6lnMpcadaEyq6zbp4cHYwFNgAO8 SHHpKsigvWyqEElhW0XSEGlv0VPumNf2cAE8iNiv4tR3SmNzo53Ql3SxAheMKQq/wcks iClBnCuN7T6CSnYjUAxlT3yZ2zq5IdzHvT1EOYKp7vqal0S90SMJLl/sKjUOI3RYINkM dZndAFKF87bnUYFM6jlTrciTbRUvEEoIfNsfliZZjagOJ1LIIOv7lmJ6/hJb6Le9SR8c oGsBNp7Lgtkzg6dgj6N4vkeT6nZAwPGObpejS3B3rFyp1TvFQC8+FUyJqx9X2KceaN5W ObiQ== X-Gm-Message-State: AOAM532UwyUDKaZYu92YqyUWyXhMaGMKus9l8SUzXlyOQW7aQ3Ko6gPp oH9VGOCZG93uaoSkZegk5I00XFEXuNoL2Q== X-Google-Smtp-Source: ABdhPJyt0y/c9ZhHNWak/Jj96l4zeWGhU2USW80xscbbkmNqqd95mRaljYS97GOixr9ujyaZ2zPVEg== X-Received: by 2002:a17:90a:66ce:: with SMTP id z14mr3971227pjl.123.1613155746594; Fri, 12 Feb 2021 10:49:06 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 02/31] linux-user: Introduce PAGE_ANON Date: Fri, 12 Feb 2021 10:48:33 -0800 Message-Id: <20210212184902.1251044-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x630.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Record whether the backing page is anonymous, or if it has file backing. This will allow us to get close to the Linux AArch64 ABI for MTE, which allows tag memory only on ram-backed VMAs. The real ABI allows tag memory on files, when those files are on ram-backed filesystems, such as tmpfs. We will not be able to implement that in QEMU linux-user. Thankfully, anonymous memory for malloc arenas is the primary consumer of this feature, so this restricted version should still be of use. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu-all.h | 2 ++ linux-user/mmap.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index af555f1798..1f47e0fe44 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -275,6 +275,8 @@ extern intptr_t qemu_host_page_mask; #define PAGE_WRITE_INV 0x0020 /* For use with page_set_flags: page is being replaced; target_data cleare= d. */ #define PAGE_RESET 0x0040 +/* For linux-user, indicates that the page is MAP_ANON. */ +#define PAGE_ANON 0x0080 =20 #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) /* FIXME: Code that sets/uses this is broken and needs to go away. */ diff --git a/linux-user/mmap.c b/linux-user/mmap.c index c693505b60..7fb4c628e1 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -599,6 +599,9 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t target_prot, } } the_end1: + if (flags & MAP_ANONYMOUS) { + page_flags |=3D PAGE_ANON; + } page_flags |=3D PAGE_RESET; page_set_flags(start, start + len, page_flags); the_end: --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156029; cv=none; d=zohomail.com; s=zohoarc; b=fflq2F0JEmuqWUJKqhW9iiu6ipd73H8BBONmQy6fr8tTt8XFD1t2L4nethL+vUcSW+SKyIdjAb1942taAfLbzFpWpRZUYpNp/P7G0H6LTQJBMBjFC5mrAFRgk6G//SnrPk4Gin8yTCZe4OXPBQjAjGlPiJDbDkyiyEv5w6fnpDg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156029; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=1qHXcMeb4VFTCjSJSEVePGX+IcNMTfSnJ55HOY2nUvs=; b=mnB6NH8ufQf6X3YDEGhOVPRIXbMnV8/pl8L12oxz5Dufq5pk6hhzpaQFUu2i6h1mgD2jAwc+Wu+9A+MHlC75TXBqbV9CyPL+GFNrHsD0qspNq1kWxx/h7ieZPybJwTKKGbSupbjDDDhhOmMikNZ/PtU4Y6k96W2jFV8QnYoI+zU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156028902309.75663043735483; Fri, 12 Feb 2021 10:53:48 -0800 (PST) Received: from localhost ([::1]:51094 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdZU-0005Q8-Ja for importer@patchew.org; Fri, 12 Feb 2021 13:53:40 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39248) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVA-0001V9-DI for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:13 -0500 Received: from mail-pj1-x1029.google.com ([2607:f8b0:4864:20::1029]:39233) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdV7-0007fz-9O for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:11 -0500 Received: by mail-pj1-x1029.google.com with SMTP id d2so148771pjs.4 for ; Fri, 12 Feb 2021 10:49:08 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=1qHXcMeb4VFTCjSJSEVePGX+IcNMTfSnJ55HOY2nUvs=; b=eA+Ke8wrDBZs312bwy+cO1Xa9GYLnoqwTnFG/DjgZL/z4Y6dbEppo1uYTFiMRbki14 JLG0JleS0D0YuF0hvO47j0BOI1gDnnt0jt9ajxg3MTJwSP4iWNFnxIzcX1h0dmovQqaK ifMS4T6LdQa2F/331ZQfKcGZFJ7MHcpYaHJAPS2j89E/iWEumW/4S8WZgE52Drhh44Rz KJFjr2Kg3cppLPs8iv8kfsMYXzJdlXgbC4T12Wkl7NK4Mi48D+YKO+DcqRJ4jMuynndC g8T7qV16B45pvsD7NdCmTrzKv1uLD715kpkVTXSUgyPe+omoPNrgFcdQy94U/YzSYD+J HlFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1qHXcMeb4VFTCjSJSEVePGX+IcNMTfSnJ55HOY2nUvs=; b=uUai/Knd/KlH/SBB6NHJEOrCQZR05PQGWR9G+BXHRsNwJal0jY14AKW0Q7sWXMds4Z tq0VwAsbWECmwTPTIsYfQRkOxZpTiWrpKiK8QRevdnOZnOm2qSo7fs/3EyKPIOHw4bMp cfhSZR14q8bR1lGZkW6QpZjmYwErM3r5I3GSoN+a/ZQnNyzAuhkPqUO8e2Zncwhd9Zmx EPREmDkbA4uRIsxKZMRAmwPpxzjgYS3tG92+L2kn4jxE8s2x7gaX9hW3nJ9KlVWuFR0v mugqF7ASxd3IlfxuLvzn2un2KAJnezpbk2RYg37/S0nwAaeu9EvAT2yBlsAfo0Wo2Q1G IRhA== X-Gm-Message-State: AOAM531kFybtWYBtBvbEIqozPNCZTzejM3TVe3TGaLIrybYTuPHHiyAM 04yjofcNjzX0t/X9tV8vYH7f7TK5Tq32xA== X-Google-Smtp-Source: ABdhPJy05OQT23lTuGl0mjL8ClE3He0i3ATNdUwPaYB10x6mjgpz9cYe3FumFHK0U/l2vPF4dolttg== X-Received: by 2002:a17:90a:1904:: with SMTP id 4mr3938880pjg.212.1613155747621; Fri, 12 Feb 2021 10:49:07 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 03/31] exec: Use uintptr_t for guest_base Date: Fri, 12 Feb 2021 10:48:34 -0800 Message-Id: <20210212184902.1251044-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1029; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1029.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" This is more descriptive than 'unsigned long'. No functional change, since these match on all linux+bsd hosts. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- include/exec/cpu-all.h | 2 +- bsd-user/main.c | 4 ++-- linux-user/elfload.c | 4 ++-- linux-user/main.c | 4 ++-- 4 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 1f47e0fe44..d6ad774c01 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -158,7 +158,7 @@ static inline void tswap64s(uint64_t *s) /* On some host systems the guest address space is reserved on the host. * This allows the guest address space to be offset to a convenient locati= on. */ -extern unsigned long guest_base; +extern uintptr_t guest_base; extern bool have_guest_base; extern unsigned long reserved_va; =20 diff --git a/bsd-user/main.c b/bsd-user/main.c index 7cc08024e3..385d35886a 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -42,7 +42,7 @@ =20 int singlestep; unsigned long mmap_min_addr; -unsigned long guest_base; +uintptr_t guest_base; bool have_guest_base; unsigned long reserved_va; =20 @@ -970,7 +970,7 @@ int main(int argc, char **argv) g_free(target_environ); =20 if (qemu_loglevel_mask(CPU_LOG_PAGE)) { - qemu_log("guest_base 0x%lx\n", guest_base); + qemu_log("guest_base %p\n", (void *)guest_base); log_page_dump("binary load"); =20 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); diff --git a/linux-user/elfload.c b/linux-user/elfload.c index a64050713f..29f07bb234 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -2135,9 +2135,9 @@ static void pgb_have_guest_base(const char *image_nam= e, abi_ulong guest_loaddr, void *addr, *test; =20 if (!QEMU_IS_ALIGNED(guest_base, align)) { - fprintf(stderr, "Requested guest base 0x%lx does not satisfy " + fprintf(stderr, "Requested guest base %p does not satisfy " "host minimum alignment (0x%lx)\n", - guest_base, align); + (void *)guest_base, align); exit(EXIT_FAILURE); } =20 diff --git a/linux-user/main.c b/linux-user/main.c index 2e3c169878..81f48ff54e 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -59,7 +59,7 @@ static const char *cpu_model; static const char *cpu_type; static const char *seed_optarg; unsigned long mmap_min_addr; -unsigned long guest_base; +uintptr_t guest_base; bool have_guest_base; =20 /* @@ -824,7 +824,7 @@ int main(int argc, char **argv, char **envp) g_free(target_environ); =20 if (qemu_loglevel_mask(CPU_LOG_PAGE)) { - qemu_log("guest_base 0x%lx\n", guest_base); + qemu_log("guest_base %p\n", (void *)guest_base); log_page_dump("binary load"); =20 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156389; cv=none; d=zohomail.com; s=zohoarc; b=EK7uu34pm4+Hyjk4idwSj2vZJOSO+TKDq6FViBCTdjv4q94sDdxBcOGHcsc1gkKOQcc3MiOc3lFqcbhWLnsbDzNrEc7eUxMUKXxZnhlHFyGLJ6Tj5OfkQxvd42gnq77ZrsN0TnjbDnIq27LG7AvxGaHyjYJxenGNthHT4eFBwVU= ARC-Message-Signature: i=1; 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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rTJCLYbpyElUYj7N6H7CWtvtauF0jl3ZjvvIOqLSVtE=; b=NAqieh+qsBpnwEhi/h4XWL8vUtjWq4PqQ3pKIc3+Rqcga8mAT2jDzr1xFlT+8hQuJj eySF3lNA6j/B81rTqCYp5DgH4pQFHxmJ4NOw3u0pCECpzrASWOruuP8oLycDK4ItSLVn 76ZI9g7KkWCCLYf3s5EtzlyGlnSZ6l228GpQ46Gwo1QtWheZasgs5i38yCMXpMHTGn9u R+CGZdCT4KIBVSx8NIPsUlQr/ARQLY1uicSjJlh46TD4z8Lm0fMDZlKIPi4SPz6UQqva 3iYsVeiowBfGxnYkfJGgfeCFO4DAZH1lpHcB0HGYrpwbDDf31c+QAC5r1DyjVH+lvZz9 I+jA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=rTJCLYbpyElUYj7N6H7CWtvtauF0jl3ZjvvIOqLSVtE=; b=DH/4Ri7iFjJMuq9BjFrqmCUp+Ol2PJXFM3g2GDDgxRI5LtvQsGvPHJGZ5+mhf2Yfc9 7SIihQRxXlZTj8Pj2udmpdXyxfrkVIR31/B0A6X6M7kbTWcINAoktFqLXpeRXe0ZWZG7 n6GvkKpPG6ktZZsMfq2gwulS8Tlz+3souDxjHJ+cZUW8WloPoRgb7qDCtyoYpXbuPbp2 jZUNKFHRLhw5zKpsx6GBFDYSsqmsN1/8x/XMp9LBUm/prce5SVrjJoMdb03auHcw6jew z4zv+A4RYYMK4qy6vd2m5YN7D/46Nk/axvxFnIqA1tRpEmj2zsW/HgciUvgplqcIHq2S tPdA== X-Gm-Message-State: AOAM533l8Z0dMmo+dy+BcnIJXW09+7Fda2c+IAzmAH0YQYVTmCDGM6yj gvHzVzXVhP3p2fEO8J1oJ4lxh/OwL+lNog== X-Google-Smtp-Source: ABdhPJzMCeTOF2rSBqhVBjyCn62OXwT/DN604zvvQ6gYOaVIfES1q/Qg808lws97TwQ3jdZbKUBFnw== X-Received: by 2002:a17:90a:480e:: with SMTP id a14mr3793170pjh.167.1613155748613; Fri, 12 Feb 2021 10:49:08 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 04/31] exec: Use uintptr_t in cpu_ldst.h Date: Fri, 12 Feb 2021 10:48:35 -0800 Message-Id: <20210212184902.1251044-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" This is more descriptive than 'unsigned long'. No functional change, since these match on all linux+bsd hosts. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- include/exec/cpu_ldst.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index ef54cb7e1f..3f9063aade 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -70,14 +70,14 @@ typedef uint64_t abi_ptr; #endif =20 /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ -#define g2h(x) ((void *)((unsigned long)(abi_ptr)(x) + guest_base)) +#define g2h(x) ((void *)((uintptr_t)(abi_ptr)(x) + guest_base)) =20 #if HOST_LONG_BITS <=3D TARGET_VIRT_ADDR_SPACE_BITS #define guest_addr_valid(x) (1) #else #define guest_addr_valid(x) ((x) <=3D GUEST_ADDR_MAX) #endif -#define h2g_valid(x) guest_addr_valid((unsigned long)(x) - guest_base) +#define h2g_valid(x) guest_addr_valid((uintptr_t)(x) - guest_base) =20 static inline int guest_range_valid(unsigned long start, unsigned long len) { @@ -85,7 +85,7 @@ static inline int guest_range_valid(unsigned long start, = unsigned long len) } =20 #define h2g_nocheck(x) ({ \ - unsigned long __ret =3D (unsigned long)(x) - guest_base; \ + uintptr_t __ret =3D (uintptr_t)(x) - guest_base; \ (abi_ptr)__ret; \ }) =20 --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156817; cv=none; d=zohomail.com; s=zohoarc; b=d9lBUgy5UYfFLIctYUeRKS7pjBLO5Y1U3mr/apfnC8bZdDidsEdg4ne7eUe7vjNaZqQ+3jrpEOPYSo72VBpMhuvxwGtF7tg8Qrswt2KKSH6EKU7y8ptrCBagps4vZvFyJJD6bDN7viAviXm0W6aDVC63EmvhrA1DBWA//TRG6Ro= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156817; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=xhhF4cnD2bQGGauP5wAsskp8GPwXgWKUSZeMzfZve48=; b=cL9ZfzpzVgU6qOG2+S8FvkxQiprjXAMN4+cY/aqn/+VnaNdzZLYIOKojULmyAQECjcHhtxfCclH2930i7Fkloedyid7fQwe91bZZMeOT3PhcUB6FWoSsv3FVeQMimOZV3LxPtazTnqUg6FSOZYRb2rnz8xPGlwynL3liLx6ch2M= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156817452973.4989076810546; Fri, 12 Feb 2021 11:06:57 -0800 (PST) Received: from localhost ([::1]:48076 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdmG-00082J-R5 for importer@patchew.org; Fri, 12 Feb 2021 14:06:52 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39344) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVK-0001Xg-6z for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:23 -0500 Received: from mail-pg1-x531.google.com ([2607:f8b0:4864:20::531]:37156) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVB-0007lD-4A for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:21 -0500 Received: by mail-pg1-x531.google.com with SMTP id z21so252980pgj.4 for ; Fri, 12 Feb 2021 10:49:12 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xhhF4cnD2bQGGauP5wAsskp8GPwXgWKUSZeMzfZve48=; b=hbZByw+aEjdrjdkAzS+n/JlDa+c+d4dS9jRIAsfwE3oCrPTgdvisCppYx4AwgPa18Z CQ/E+uJk1IHVKFbvYUfF6/c+0v+YobHg3k574aYDuSAeU+OLKW2WVW99B4wi+bc2KwPc 3Na6QhqjFF0HHCHqp6RHW9Xx+civcfIEM3LF8J5hw3e71WWXxvKqzybNkMvrnx4DYq21 rw2pvAzTN5zk/sRFpGx5WKY5qUtfcuslSHWpalOay+yNRRJ2zqumOEZRM+A5wn2PXiyS gEUgxBhTPaPdbdWo4tkvDwGEPZZyM32Zbycm2ivYiGj3E5l56iICCFRoi6t6k94hMiI7 XlVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xhhF4cnD2bQGGauP5wAsskp8GPwXgWKUSZeMzfZve48=; b=QrwC1enYVm+1zTSMXyYAA/vLuv3C7gN0Hj2GH7uLJRTTce47mpP81dCMcMw2qnRjdR OkLLXiSMbdwEmQcOY6/WiZjxpnYB3mMolpLzS5XIaiAFggQa08uCMvqpOWG347AVfYRX yubK9yOZM+DIxrBTQ5vBxzalT2aqGb83YTpInVlH99pC1fGaWa/JuFx/ou6JPjnU5PfL cYPrup8wsgPq4NqWChMldPZBHgP4OEMpPxpyEokLifJoniPvxBv1StDIHa2PlFzdVtpr C86X+yw6BZlCu+15pCmaqIvryepTaz84h0f6S4GdMZj7br/3z1BUfkv3Fc+4xUNY7QcN 3ioA== X-Gm-Message-State: AOAM530p4RsgprgJ76+EYbQ7N9/W53k/TeohYlbhEKM947bN5Wo4j+7Y sM0SC96Jm3+dkEpNvP7N3CLe+DeFJ/vvLw== X-Google-Smtp-Source: ABdhPJzdnhkiYn0X/yMMLPlMgYX+XTr/fEj+si784IXvCPUr4PegICFIo3vBTuQGy9CI5lADwOXurw== X-Received: by 2002:a63:515:: with SMTP id 21mr4426539pgf.231.1613155751270; Fri, 12 Feb 2021 10:49:11 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 05/31] exec: Improve types for guest_addr_valid Date: Fri, 12 Feb 2021 10:48:36 -0800 Message-Id: <20210212184902.1251044-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::531; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x531.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Return bool not int; pass abi_ulong not 'unsigned long'. All callers use abi_ulong already, so the change in type has no effect. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- include/exec/cpu_ldst.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index 3f9063aade..5e8878ee9b 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -79,7 +79,7 @@ typedef uint64_t abi_ptr; #endif #define h2g_valid(x) guest_addr_valid((uintptr_t)(x) - guest_base) =20 -static inline int guest_range_valid(unsigned long start, unsigned long len) +static inline bool guest_range_valid(abi_ulong start, abi_ulong len) { return len - 1 <=3D GUEST_ADDR_MAX && start <=3D GUEST_ADDR_MAX - len = + 1; } --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157093; cv=none; d=zohomail.com; s=zohoarc; b=lBumTHm0SthIzaxPRKl0ekln7m+03SAwWTrb0QvdRSOUeKaZpq0j2sTO+24d2IRuEhld2941GDdgojgLSi0FWTXstRmO5UsEkydOUKApqlulikevRsIQEB/4oW+1ysH8RD4fFxWK3eJb5MZCnr+I4DlXq2lRsN9o3wy3GnT0IZg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157093; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=yAOD8rB2c9GoNvNcKMZwjdplIAr1RvdqOJ4SbnIjxU0=; b=SDnHmKjDdEmrpRg8GZ7+JFNdUHg5//tqQ8SgFqRfradACu3VJaLRhuaTtqnTLPMI74SY0rJeHK25us4aR1bsh0shYK7mezdeBvFLH1MOQGiiU5NcmPNmBQZK6fZN2Y5vvTZK9HNXlLPiVzq4GB6cI/rNd3WSDfRaoZXR73qByKU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157093450682.2817516926387; Fri, 12 Feb 2021 11:11:33 -0800 (PST) Received: from localhost ([::1]:56828 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdqh-0003OQ-6c for importer@patchew.org; Fri, 12 Feb 2021 14:11:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39364) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVM-0001ZG-Iw for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:24 -0500 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]:55131) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVB-0007lL-L5 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:24 -0500 Received: by mail-pj1-x102c.google.com with SMTP id gb24so132106pjb.4 for ; Fri, 12 Feb 2021 10:49:13 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=yAOD8rB2c9GoNvNcKMZwjdplIAr1RvdqOJ4SbnIjxU0=; b=VZ6+CWl+bBO+BSD8d9sZUHaxueIgafPA2gTAEFM6jHJf0AxCDbSXN3MNx0p2xvSO47 59kzg8T9vHbZla+IhFzqMA6oELLFJi62Uwz4j8DKXsVqRk4IW2mqjQQU6y4bG10K/5hl OYulIPfWNsoFdxUmNY1W2Lp9Pd6sfaNE1SVJczRL68eHeeSlVfW/Lw8AvcXgQbrDAdcP yCq8fdN+26Ucr/XV/KBiO/ydQGEZ/IZRpLVlNJQNAxxJFqk9i3dZsQ4OmISC0/UPnf6+ sZUDu5c83C8EyOL3WPK5TvztV1SH5ZfWo2CbS+PEnBQauo7ehz2rBQMQm0693d/FxKC7 T24Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=yAOD8rB2c9GoNvNcKMZwjdplIAr1RvdqOJ4SbnIjxU0=; b=cO7yXqj6IXRoY8mVfLekJtXC4sScnQc7Bk+Cd7KM5TgHockVprqoB0fa+RH2SDmohb KDltqxHFWukTvoDaFrWafKYOANIenc87YXl3bFM124VtsZmtf2QtTZHUDufeGSL1/TaW NrNsmMVd6JY23I2QKdhd3BPnAoQzmNtWVmOrQs6xpUicG1qdkOSb6Nkg9kQZzisGEfZt Mzef1ga5dX2Gh2a/MnicXaKzBRZFvrgTpDoMjKsclQ5UD3EaJKFMXUxeBn/16yc/MpNM Grd0NKdw9tNWst/0B/1zrXmyP/oZhSpbq4KsmiAXDLgQhGS9n6U7d6MFKO9VyFwk3nu2 G8mw== X-Gm-Message-State: AOAM5329gQsK4s0WMFwVM0CkMgObBhMewlb5azP8sw8sLbP8lb0q5rvO FjcEA7uF2paLCHNxvzvliei5mCVaG6U+zA== X-Google-Smtp-Source: ABdhPJxzEB9ElhEDZgAvqRLMa+z39jFnXLuk+KpVsVR0qHJmNyy/rmQRz+vL/dPo75hPY48NQazMYg== X-Received: by 2002:a17:90a:b38b:: with SMTP id e11mr4052016pjr.214.1613155752310; Fri, 12 Feb 2021 10:49:12 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 06/31] linux-user: Check for overflow in access_ok Date: Fri, 12 Feb 2021 10:48:37 -0800 Message-Id: <20210212184902.1251044-7-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Verify that addr + size - 1 does not wrap around. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/qemu.h | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 17aa992165..441ba6a78b 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -491,12 +491,19 @@ extern unsigned long guest_stack_size; #define VERIFY_READ 0 #define VERIFY_WRITE 1 /* implies read access */ =20 -static inline int access_ok(int type, abi_ulong addr, abi_ulong size) +static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) { - return guest_addr_valid(addr) && - (size =3D=3D 0 || guest_addr_valid(addr + size - 1)) && - page_check_range((target_ulong)addr, size, - (type =3D=3D VERIFY_READ) ? PAGE_READ : (PAGE_= READ | PAGE_WRITE)) =3D=3D 0; + if (!guest_addr_valid(addr)) { + return false; + } + if (size !=3D 0 && + (addr + size - 1 < addr || + !guest_addr_valid(addr + size - 1))) { + return false; + } + return page_check_range((target_ulong)addr, size, + (type =3D=3D VERIFY_READ) ? PAGE_READ : + (PAGE_READ | PAGE_WRITE)) =3D=3D 0; } =20 /* NOTE __get_user and __put_user use host pointers and don't check access. --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157280; cv=none; d=zohomail.com; s=zohoarc; b=E962HwOw/zrJyK+ql3TfDknTSSwCy4kwwh9OHbYONuM7Y/BHzx5Mq1tHT9hGpP7rTDFEStgKLjJhzGcMEfgboplNWvShY7XKmHp3/SwOdeD9lhLsXblUpwHtZfbLYIoU7CgVnGXeS+AJJZbXm9k8dCk3wydUS5532JOsI7MHcCQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157280; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=VyGOgXRVYXE4KsV9afYsCBAI5eV0Qm7bovPtD8hErTQ=; b=fBl63LGZ+CNVM35fqN0sZDLDnXOUnR7aO/f2s1Ev3BFpgiqzidGVs2Fxk+YJ9ECr1Bx21vlliaVdTh1fjY0p2kKMiiqUuMhXEB2Ih5f3Po3smP/FeYikHELuPpCp4jzrZl1+pOZvHSP8Q6RuNVGR0ewnM8QnDwu5LHjyKGQ+ahA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157280379534.0415630141108; Fri, 12 Feb 2021 11:14:40 -0800 (PST) Received: from localhost ([::1]:37178 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdtg-0007HP-LJ for importer@patchew.org; Fri, 12 Feb 2021 14:14:32 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39402) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVO-0001bB-Df for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:27 -0500 Received: from mail-pl1-x630.google.com ([2607:f8b0:4864:20::630]:36328) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVG-0007m2-1C for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:25 -0500 Received: by mail-pl1-x630.google.com with SMTP id e9so327439plh.3 for ; Fri, 12 Feb 2021 10:49:14 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=VyGOgXRVYXE4KsV9afYsCBAI5eV0Qm7bovPtD8hErTQ=; b=DlQ9nXFood1iSmBqjhhD9Nlo3i+GQYdJ0P9SaBRww/pda8UxNta4ePWy4qhwKhzcD/ spPPVRRH+cBhvxL+RBKWAEj4p216Dw6I8veebOL6nqV8ieHTeapq7TpIlq1j6/OCQNll frf/wWCn5TAeQO3y0c87TH3PvQvRx0JIt4bimlFLmj/Hzm0rxRYZbyb8hcjafdUizG1e lQ+aISuChOVEsuWvWBwDLBhINt8t0N9lReEEWhFIDOP80YxGxKkmY9X7WPZEszIjdfZZ 89vc75j64zGqwVjA77rMonVXyJHGkKt7hsO5syClZ1TS9vnZNpLHll8azav1g9frQ5HO ZjXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=VyGOgXRVYXE4KsV9afYsCBAI5eV0Qm7bovPtD8hErTQ=; b=kZqUxG65w3ixaO/GYPErZE0Lys5Bl6zimlkbFHEbJ1cYRYoyAxdBzideyJ5wNwq4Pc hf8kjYcwsghLYr3oOgw0f9QC5inyn18HP+dccwDiOCs9eSsSQ2PI9DseRsWLKvSbyYEO 8RD8Nh3BXIs3d9Y4QpvcwHRD5JrkHbJNv9Roq67pc37ImnQqVzmo5NTGVzkQHJrjHXdm Rnjb0hUCxyscgLs4cwLKfR6RXw4eYZ4BOO7jcW/aPZ9FDEFzcmcBxXxzM5GOsvunUwEW frMBYcHP7knj3q/TXGhWUgfl0CGqWfPExbyv7HtMUINUcxc0jqVxHnPLTeC/Unvo5dC9 /oxA== X-Gm-Message-State: AOAM531DgxLD3r3aShph6mVZMfQ398IV+sNTXuQsUzQMW5FY5mpTtuhU /J2zfwwHDYv1/T4A1V2L/nY6+cUDodzRxA== X-Google-Smtp-Source: ABdhPJwHyD3mXCIT5+HuwWaRZa4j3hoY30UQ+plSh1Woxl/IargxQWHqhUwheG62odCvB4SFL3npvw== X-Received: by 2002:a17:90b:4a8c:: with SMTP id lp12mr3890918pjb.214.1613155753476; Fri, 12 Feb 2021 10:49:13 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 07/31] linux-user: Tidy VERIFY_READ/VERIFY_WRITE Date: Fri, 12 Feb 2021 10:48:38 -0800 Message-Id: <20210212184902.1251044-8-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x630.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" These constants are only ever used with access_ok, and friends. Rather than translating them to PAGE_* bits, let them equal the PAGE_* bits to begin. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/qemu.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 441ba6a78b..9251337daf 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -488,8 +488,8 @@ extern unsigned long guest_stack_size; =20 /* user access */ =20 -#define VERIFY_READ 0 -#define VERIFY_WRITE 1 /* implies read access */ +#define VERIFY_READ PAGE_READ +#define VERIFY_WRITE (PAGE_READ | PAGE_WRITE) =20 static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) { @@ -501,9 +501,7 @@ static inline bool access_ok(int type, abi_ulong addr, = abi_ulong size) !guest_addr_valid(addr + size - 1))) { return false; } - return page_check_range((target_ulong)addr, size, - (type =3D=3D VERIFY_READ) ? PAGE_READ : - (PAGE_READ | PAGE_WRITE)) =3D=3D 0; + return page_check_range((target_ulong)addr, size, type) =3D=3D 0; } =20 /* NOTE __get_user and __put_user use host pointers and don't check access. --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613155959; cv=none; d=zohomail.com; s=zohoarc; b=YZu3krVUX3Oh4hTMREyNOE/pNPUO/HBnSA7mgtkrP52gpbCjonfVrAC+M7SWCj7zV5B4dXD0JkXhF7X/drAUQVcBS53ejGP1grIUTsk2wrP9r0g45rQ+lnmUPgi5JJUfwpQj3H6wFG7mZ/RPFRpeHdICXYXgX/gug72t01/gBFE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613155959; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=Yq9neRE5uhExlneFuBSgGmaVVsCJdyYjAvE1n9KBmpg=; b=oDUxAPyqU4pjpUp2RKhHFuPkj04IJ6eVHBdSvtiJRIGZXRs9zABO/2gBs+J89iSARhLc0nD1Fl5MhzuUk2mdl5RVH2GhueoaNU2WgGvpOhoEXm7FuVjlozia17ISMP3f1oMyIeaHWIq/w5Uv/JTCaU8CAXaO6DU0HIrEq8+S/74= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613155959212347.35365121421717; Fri, 12 Feb 2021 10:52:39 -0800 (PST) Received: from localhost ([::1]:47162 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdYN-0003cW-Gy for importer@patchew.org; Fri, 12 Feb 2021 13:52:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39400) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVO-0001b1-7M for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:26 -0500 Received: from mail-pf1-x42b.google.com ([2607:f8b0:4864:20::42b]:43095) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVH-0007mi-SF for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:25 -0500 Received: by mail-pf1-x42b.google.com with SMTP id c11so51791pfp.10 for ; Fri, 12 Feb 2021 10:49:15 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Yq9neRE5uhExlneFuBSgGmaVVsCJdyYjAvE1n9KBmpg=; b=zhkIkZmBz73By3nW8zYF3JRnY4XVdW2rmTidi/D7e7+M4GGChAFNJppCmLMiE0FUZj v/W1x6+EIzxLP3kjEwBEPs0PdcLUyGHMY6JiY1p2HXQJpEncEwgbr3pskZzKNEKZ5kxJ uevQDtfGdyJ381rSXZ0Yx3E+X1hXefnuhnpffDLw7D8UGM0i5xPM7ClvzrliP6/QLx8f cEeJ1dszdmrh7YHEr8HYso/D/EZ1qBbuzqweP9AP8j2QZbyVYqN48ODcb48RYTGK6nAR owE2WDlTvGcBxfFwqdlH5JLHiOk5GVgzwRKppApRCydOL+Wx5DKkuzZIA8pERigM8eIZ eNtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Yq9neRE5uhExlneFuBSgGmaVVsCJdyYjAvE1n9KBmpg=; b=Rs6Z99LYnQ25UCi7J2pFIP8F2TOzJwVvraVFB7swNfec8W88W3KyxjmtfcT6TZtLmx lyzP7Y8FR5j525rEgY5EdnMNefYc1YdZbUqCYzP7+GXV1UAHoq0oFUasmo5/TzPGQ9rq O2MgJVKz4odQDPvmAUITOc+CTHXQq1BSpjqQbPk0zCjssiOYFHhCOPCqJouLjlrnstg6 onN3Fb0I5Heyr6JKLNFi8L3/Yq0CTm5LIFKgeO+w4INYuVrdXzGSwqEesnNLvByudOR8 3DS6uATzXSsdbKSCR2xtEb9VDQ4vBJfmY9RBxE7cEt642Tumwo3oALGyZhuL4WegW4vQ dY2w== X-Gm-Message-State: AOAM530AHdg/N+iaWJMWxqe2mIIpoDfh7QuBsSBuyniAP+JEfnZ6BTse 78cdLqW2LwUJC1N5eNsJAysT/s2pm8/eog== X-Google-Smtp-Source: ABdhPJwfNj3Ww/a0PLq2WnyrqS2cgbsggYP1Uajso/Ewfws/9kFy3MJ6rRDS0y053xIAlx1Z18zusA== X-Received: by 2002:a63:5705:: with SMTP id l5mr4520134pgb.415.1613155754362; Fri, 12 Feb 2021 10:49:14 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 08/31] bsd-user: Tidy VERIFY_READ/VERIFY_WRITE Date: Fri, 12 Feb 2021 10:48:39 -0800 Message-Id: <20210212184902.1251044-9-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42b; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, Warner Losh Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" These constants are only ever used with access_ok, and friends. Rather than translating them to PAGE_* bits, let them equal the PAGE_* bits to begin. Reviewed-by: Warner Losh Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- bsd-user/qemu.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h index f8bb1e5459..4076adabd0 100644 --- a/bsd-user/qemu.h +++ b/bsd-user/qemu.h @@ -218,13 +218,12 @@ extern unsigned long x86_stack_size; =20 /* user access */ =20 -#define VERIFY_READ 0 -#define VERIFY_WRITE 1 /* implies read access */ +#define VERIFY_READ PAGE_READ +#define VERIFY_WRITE (PAGE_READ | PAGE_WRITE) =20 -static inline int access_ok(int type, abi_ulong addr, abi_ulong size) +static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) { - return page_check_range((target_ulong)addr, size, - (type =3D=3D VERIFY_READ) ? PAGE_READ : (PAGE_= READ | PAGE_WRITE)) =3D=3D 0; + return page_check_range((target_ulong)addr, size, type) =3D=3D 0; } =20 /* NOTE __get_user and __put_user use host pointers and don't check access= . */ --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156713; cv=none; d=zohomail.com; s=zohoarc; b=Nbps5fejPR/pv0JrMm7pS/TlZyMJahE4lRKRpF5cBsBH+MawyCns7CmiC4Vyd6LULtFZhjFmBzA0QfMvsSXrlC9/f9DihVkX0SK9wKZlSM2hX67C72H/VA8Um1a2JsfjePdXr4oSgkLfvrMmAKKroOsHKnOkY7grmrFG7oEK55Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156713; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=bAoMyMlDDlghVnqeNID447NiBs2PzgjWNFYjdCi+4Lo=; b=a4iw5uDdfUqH3rtmNllBOoGJffk4ZMOUopymjcpbP3SQtp6izZi+GbJ2nPVkJ0HtxO8eW7IvhHNSKr14/qm/yYPpsF6qqN1xQ+1mcy6UtwTRLLo210v53MKlHtVg/wNLTthLDGB16wlZ6HUXEyN69Op3IVqeIMGFep6riTdv3UQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156712567753.7295007290195; Fri, 12 Feb 2021 11:05:12 -0800 (PST) Received: from localhost ([::1]:44462 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdka-0006Is-Oz for importer@patchew.org; Fri, 12 Feb 2021 14:05:08 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39398) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVN-0001am-TK for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:25 -0500 Received: from mail-pj1-x102f.google.com ([2607:f8b0:4864:20::102f]:38768) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVH-0007ms-SS for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:25 -0500 Received: by mail-pj1-x102f.google.com with SMTP id l18so152561pji.3 for ; Fri, 12 Feb 2021 10:49:18 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bAoMyMlDDlghVnqeNID447NiBs2PzgjWNFYjdCi+4Lo=; b=fgYAreW46BfTrD1g6OYtT16Z4CahP/7wRBBPS7YgTWoAfmp40oEwkMsBNywXZOvPN4 o378e4kvTITvxq+JXtGYSd8iLM/N1rbnQX94BTwjRHz3SeJ61ong/oVhQ/IBfWUkruGr /gjEI1PAOVgzYH6WDa3G720/Wytc3wQuKhmnWvwPH3sSHc6r8BK3AG3giRDyNeZcINid heSEXfYDRPK/RoIpcU4u3llLVqCiOWXVAzMJA+GMQmlHlGb7KZIf/8C1ICjtG3qxjEJJ dblkpvI3h/x+xbxRoxxgkDHak/nkxLWo7Yito8z7bmmFG0JN7u34gFxvhNgTcs/nhqGu UaVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bAoMyMlDDlghVnqeNID447NiBs2PzgjWNFYjdCi+4Lo=; b=bRoGfqwwEiAFTfR8C8Bsvgkp5m37SyZ40EDxtIUKOanjtO8ZTSRm56l7vAPUaJ8Ay1 6PEOR2b1qpiMVAP8AwzmK0WFx0HwwJdZv3wzTSsXTK9xWR3HT53ajk7DUaeVVInQ7+bJ mIDBUch1n4pHSaUabLel6M+RnhGiO3sc908Kycd5R/MYHkWyGcikD1XOWbQDDW5Qdvxk AlWXZx46plG8sHe+GvbEbF+//KESQP+4qMTu63NSODfLh8y16F9Hnxvry5PPRs77MVi2 wSeNAUCrgWQDDafB7/77AwYSx2QbhcUXX8h2NQ6CNaxfZWq9dUKbqge1K39pZJ/qk5NU whyA== X-Gm-Message-State: AOAM531MP0EYzbk+I5nekk/XohF4Zb5aba64th29zBA3qUKi9W053t1B KctqajJxN6Qclp9SDbriY7OQ5U5VTVOASQ== X-Google-Smtp-Source: ABdhPJxqF9zcrEgDoxUXG+mxd5NR1rbsqaEL9G/rCxJHcUSMLufRiXaLj/8mvAacni8fwF4syASiPQ== X-Received: by 2002:a17:903:1d0:b029:df:d098:f1cb with SMTP id e16-20020a17090301d0b02900dfd098f1cbmr4004610plh.49.1613155755370; Fri, 12 Feb 2021 10:49:15 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 09/31] linux-user: Do not use guest_addr_valid for h2g_valid Date: Fri, 12 Feb 2021 10:48:40 -0800 Message-Id: <20210212184902.1251044-10-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102f; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" This is the only use of guest_addr_valid that does not begin with a guest address, but a host address being transformed to a guest address. We will shortly adjust guest_addr_valid to handle guest memory tags, and the host address should not be subjected to that. Move h2g_valid adjacent to the other h2g macros. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu_ldst.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index 5e8878ee9b..4e6ef3d542 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -77,13 +77,16 @@ typedef uint64_t abi_ptr; #else #define guest_addr_valid(x) ((x) <=3D GUEST_ADDR_MAX) #endif -#define h2g_valid(x) guest_addr_valid((uintptr_t)(x) - guest_base) =20 static inline bool guest_range_valid(abi_ulong start, abi_ulong len) { return len - 1 <=3D GUEST_ADDR_MAX && start <=3D GUEST_ADDR_MAX - len = + 1; } =20 +#define h2g_valid(x) \ + (HOST_LONG_BITS <=3D TARGET_VIRT_ADDR_SPACE_BITS || \ + (uintptr_t)(x) - guest_base <=3D GUEST_ADDR_MAX) + #define h2g_nocheck(x) ({ \ uintptr_t __ret =3D (uintptr_t)(x) - guest_base; \ (abi_ptr)__ret; \ --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156601; cv=none; d=zohomail.com; s=zohoarc; b=DQ/ZbXiq46ITjbFs0QJ3WcYS4hWMdJGFuK6YLarYS/zN40V8MMO9ISLQSn+3KuUqZe2GYJKLbqW1mVFaOnUgNno/D+NkHVXGXRqf8p6GZ7L+Bk5FcQ97Zi3O7VNMpExN+5Pu+fl8OqOTdMfy9Ijk4s72/h7J4skxG0ttmxcBTj4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156601; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=EkdpbP6ZnSTqdRa/S1vfX9RZ5a2dDCb/MaRsUJualVo=; b=k4gpMWhiZj5T0/09lP6mhCfNnVw6WAa5aWbIO8eNOQF/UIljbJKKtspsBWMl2SOb3Ed+Nn+6SJFvFTJAO1nZkLCEeIGxPeNS628iXGIJ0mmOdhrOY4NSRJ4kM+sivPU6lUDoMs2Xb4Zl4VH9IKIKzzWf6RmsyGLHwJpkeSveq/Q= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156601009326.8887449687221; Fri, 12 Feb 2021 11:03:21 -0800 (PST) Received: from localhost ([::1]:40898 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdin-0004nl-5x for importer@patchew.org; Fri, 12 Feb 2021 14:03:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39478) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVU-0001fl-NV for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:32 -0500 Received: from mail-pf1-x434.google.com ([2607:f8b0:4864:20::434]:34641) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVH-0007mw-SD for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:32 -0500 Received: by mail-pf1-x434.google.com with SMTP id m6so81876pfk.1 for ; Fri, 12 Feb 2021 10:49:19 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=EkdpbP6ZnSTqdRa/S1vfX9RZ5a2dDCb/MaRsUJualVo=; b=ov1xpKiYchnKJNCRkQiuG0GwRW/R1/TQvoHkpfqt3fWL8c3kh1O+J89GJLV2j336jk ynGY+0vJyq3Zdtl1gLqSB03nrslhcfOQeBRb4FCYRWDnH0XKJLRS00NXqFSnj2m28u4a IU4dE9s04IJMEqmkS2wM3EZziwl7XZfnqt5TZxVrIYY4rWXziZyq/+Twjxaq3T9yOchi oDA6Uqiry3JrfAHajOZgTW/SF4NXzEOLLbfiJn+/AMBh4s6iVJuSyBpW2H0BzkjDdyPk yNFxHYSdcMkPKXTIAM1UH7UJcse9dev9AJCQKglDmn90tftvtOx26cy/LavWLwNLmxgk XDFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=EkdpbP6ZnSTqdRa/S1vfX9RZ5a2dDCb/MaRsUJualVo=; b=lR0EyGKRtbQHf+AFPHl+rmFawWsLNCPSrCYPKl4fiPE/Ms6nTpP9isMeq6+p0sOgNh AfUDw3AUBKhyE+C99s2fNevIMKAoIAXoVs2NjaVpggLnGD0c5mEW0o3i+xJm1Pd7d2Ws I4ZiInrUTuQ/sFdj7cSGeB3SBGFDsJmRIhMHMbDLMaNnmyLOBWrTR8bBiDBQZYOOfEPD 28KUyAKcbPRHbPV5U1W3Srb3MyuxNqYCOcglJqB4u/JlgNqTTQLYQIuNbLMYk6xNJGW1 45E9MYr2gHptxVI0brWeBfIGV5exJD1cWJTcHEj7VAPUwOB22XowBeVx/QRUbkAJ0xeH 9H9A== X-Gm-Message-State: AOAM530m8icKNtZ5OVrUg6eFzcGfWqGpE6+z2RPbruLAzc4bC4OZX9Cm 3sRUf6HUKBzAkbGxmRfsVUrpQHwAurL1LQ== X-Google-Smtp-Source: ABdhPJysVp6xkRoUR2TmZT1anpUdaMzr0sDQYqNnKBbY5+pAznWryT9g6XrORD1YUICbYvNMOUcW3w== X-Received: by 2002:a65:4942:: with SMTP id q2mr1629888pgs.34.1613155758222; Fri, 12 Feb 2021 10:49:18 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 10/31] linux-user: Fix guest_addr_valid vs reserved_va Date: Fri, 12 Feb 2021 10:48:41 -0800 Message-Id: <20210212184902.1251044-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::434; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x434.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" We must always use GUEST_ADDR_MAX, because even 32-bit hosts can use -R to restrict the memory address of the guest. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu_ldst.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index 4e6ef3d542..e62f4fba00 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -72,11 +72,10 @@ typedef uint64_t abi_ptr; /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ #define g2h(x) ((void *)((uintptr_t)(abi_ptr)(x) + guest_base)) =20 -#if HOST_LONG_BITS <=3D TARGET_VIRT_ADDR_SPACE_BITS -#define guest_addr_valid(x) (1) -#else -#define guest_addr_valid(x) ((x) <=3D GUEST_ADDR_MAX) -#endif +static inline bool guest_addr_valid(abi_ulong x) +{ + return x <=3D GUEST_ADDR_MAX; +} =20 static inline bool guest_range_valid(abi_ulong start, abi_ulong len) { --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157648; cv=none; d=zohomail.com; s=zohoarc; b=SPqznIjxvWY+FK4WjLV+vn/3FLbEqUW/1XLwVbzh1FbAtknvuijFQ/e19fCbbaCMFsyr5N/NmiWUk2LEiEuyGibIS6jyGdaa0hZAAu+/glfH8bVI9kF1RAYAOO9Xq1ffzWCc6eJqSHtgExZJxfNicEg2QFz8nHp9TocQhanJXOU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157648; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=yQsfFLSfc25MKTB1YP7F63Xt2EDDu36nhF4pLSCWcTU=; b=kMGbGQm5+k/FXkHSDzxfTs+/mtasjalpXOE9eoCQEm9H+r+NLL+e8U6uEYXX5tnrZXdfyV+kE/LxHMAHXO3bU8jQhRwgIMwkkfTU0RS5WDwIc3Lc6jHwLyF8HJatQtkvowG+I2lQS0BfFGz8dfCwjD1dfC3WrXRAfbog2Sfp1d4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157648588432.2924674962271; Fri, 12 Feb 2021 11:20:48 -0800 (PST) Received: from localhost ([::1]:45504 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdza-0003Pp-Fm for importer@patchew.org; Fri, 12 Feb 2021 14:20:38 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39428) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVP-0001cH-DH for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:31 -0500 Received: from mail-pg1-x532.google.com ([2607:f8b0:4864:20::532]:46440) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVJ-0007n0-12 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:27 -0500 Received: by mail-pg1-x532.google.com with SMTP id r38so217698pgk.13 for ; Fri, 12 Feb 2021 10:49:20 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=yQsfFLSfc25MKTB1YP7F63Xt2EDDu36nhF4pLSCWcTU=; b=IYpLkHfrOWbNFeuKcPbZP73rNO5Snp/NDdAGmf41g8E6nTcU1MLATq09O42w9M7Zrg 4/vuk0GgPSD5dlOAwU+d0F/HyWP1LqUUitNHLj2gGVMX4cyECme+Rh7wqlWaCVY4mn88 U6NG81PC19N7io/4Ov646opB+F0WXqdqX9WDCe6+MoUNiCWnmDXusUaMfHCcTH9w8h+c cmcvFHRf25MBgfRsNuQcCeXSOIca2XRlOheCacRnwxvUelZy2/ahko5DstbajoQsZgv0 EvFtqYd1gWrQ1SNMhn30vNL1evV5srhNNPpAVysDqFPJiEssszHjwPDisx0yTPylUaQR 0+XA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=yQsfFLSfc25MKTB1YP7F63Xt2EDDu36nhF4pLSCWcTU=; b=bjacpfAcMTUOg0zUNwLkVyuMiY2SZ8QxvOEjG6No0SlnkotTrXkfSDHPQqUpUf59Tg aIN5vVwIBefNNSwi1YqKPiuhmOVGiiIgnJM9P/GtArDfKqKne+NxpQkS0I3DHUMScViU VlLybawPcVbwzKMzPRCyAiy9tjD5FZMyT4OS8pDhzE99Y3uWv60YBMh2Gb3kKaW1LoYT mNaf9SJ+HSdIdrSwkOkGt9LWhNVaEA7S54fZ/EQmUusvrLkuuGgMkEJGSg0qRBs1vtMJ tDg1RK1fH6xXYKiVAvRSI90lIwDpMhLW+NTMWgWsI3sKfOyxveSgEw7XpDFT7JOYziEA 4ooQ== X-Gm-Message-State: AOAM530NrrBpN/asMnfXuxXV26eWMKE5nEbjg53ySxfwW+lhNKzIDc4K C4ovc6e4a7kQ86xD2fNHnJKNuM5DzASR+g== X-Google-Smtp-Source: ABdhPJyzQ2rfR/a5DrZ9ZAU9PQQ5P4ZIfoZe99RfAryF5oTywGQPOr8/0lV21FoJoO66wwWVSgeL9g== X-Received: by 2002:a62:2ec3:0:b029:1dd:3eb1:bec9 with SMTP id u186-20020a622ec30000b02901dd3eb1bec9mr4059950pfu.62.1613155759233; Fri, 12 Feb 2021 10:49:19 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 11/31] exec: Introduce cpu_untagged_addr Date: Fri, 12 Feb 2021 10:48:42 -0800 Message-Id: <20210212184902.1251044-12-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::532; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x532.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Provide an identity fallback for target that do not use tagged addresses. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu_ldst.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index e62f4fba00..d9dc1de414 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -69,6 +69,13 @@ typedef uint64_t abi_ptr; #define TARGET_ABI_FMT_ptr "%"PRIx64 #endif =20 +#ifndef TARGET_TAGGED_ADDRESSES +static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x) +{ + return x; +} +#endif + /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ #define g2h(x) ((void *)((uintptr_t)(abi_ptr)(x) + guest_base)) =20 --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156294; cv=none; d=zohomail.com; s=zohoarc; b=B4w7WKHTGBV2uypZPQs0U6lUU796qGPnNIkbGJMbVf99MccrldS8Arwq+qZNJ/khNM6bdspeuZzhMsbNUJMeKuLkFWX6KlukOS5qC6eOGe+oaYFdDU8d6XBucae3kJwPc6p7gEEPsvK5NNr3UWKNDm1732RpMURX5cX6wN6F8SA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156294; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=viyYBjECiw91pA2JJ5wxbWnpi1IeKUGSW142/X+xv40=; b=Sf8SLXlXoT8nkHWP4X32CwzY5hRu1QEk1xD8921LOTfkpSqtvqkAuaToHaBbitsvKUNlmOKgWnvcABrWVlVPH/b0GgdSkYzCHYGjduYPNtomd5u78YdYAdLCMV+toMIpP3Wiv8QjvKQF39qy3Xu57RKmRuDYQIu6s4i+o5fO+to= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156294489115.05035377231002; Fri, 12 Feb 2021 10:58:14 -0800 (PST) Received: from localhost ([::1]:59916 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAddp-0000qr-SO for importer@patchew.org; Fri, 12 Feb 2021 13:58:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39476) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVU-0001fI-IF for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:32 -0500 Received: from mail-pg1-x534.google.com ([2607:f8b0:4864:20::534]:33173) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVK-0007nx-2X for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:32 -0500 Received: by mail-pg1-x534.google.com with SMTP id z68so270439pgz.0 for ; Fri, 12 Feb 2021 10:49:21 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=viyYBjECiw91pA2JJ5wxbWnpi1IeKUGSW142/X+xv40=; b=ufStZXN+7W3FZ2btXvumyVJq7auTZwK87xm/GMRHk3AaCPGeR/n2dClE1ktBbVM6l7 dU21xAa6PMVUC6YbusTFSr58wSe6GWCIseASaBfOGQfxxNYfC4exxjXQaZZAxD4gB0Yx 7W05Z2B8LlN9TxaKUoLAKG85xAouXnWnyF51VO0QCbNZPYyv/57psdUMcx4uAhOAMuLA mvMHngRJUeFs1iD/y0Y0A6PHeIs9sXSesRpFn90GmYQJbCd/bsVcwqoj5nDIJU2XprKR WX5bpy5R9XDs2yQKO1I3U8TB4Z2y2y9k5hH5lGzFNzyEI87E0pYVDyeGV+AwRmqoVTZM X99Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=viyYBjECiw91pA2JJ5wxbWnpi1IeKUGSW142/X+xv40=; b=MhY2aZvR9ShDhdoUhQEA3/8MTrSvgnV0UBRmem8P7wPZG/NDs3KmQWvetDKo7VP+br N/7Xh0AtTdekpJfEktJHPiH11FDy8V8tP6e7Z2cWeeuj7Y+Ek+ieKAFZrLSdWiAYQ7Is H5UOrJUtZIMwFocsLIrnyZ79Tv8/sTY529l+tqIZ+E0bOu0W2ju8tcRpw1am1ZqEjvcZ mUGDTXZHtC0hWoeLqhPLJ7o1poct8KUYAQ7RM5H+Efzh9SF+zjC7KrPTjenZFajCwOdk g8Py3pOucSPaDfDnHrvsKmDv+9mV8hiIkJk3mBTPAhPGT8T7i3PY6TVSUJTudspgsvXr jwRA== X-Gm-Message-State: AOAM531s1mGX1IOFGINnlsL2UCERMO/5p/ob+LWljEg6822EZZ0VKHav pK3shzpFycOg7id6DJJCpOauTbeXuFDXdg== X-Google-Smtp-Source: ABdhPJzp1KqN36eqBbQVA92CGQ5WaGoIo6yoJco1lz/dRrVuCXaC2r/S3wC1bM7bmW0EVgekyyO0DQ== X-Received: by 2002:a62:7808:0:b029:1df:1e0c:3263 with SMTP id t8-20020a6278080000b02901df1e0c3263mr4114317pfc.21.1613155760385; Fri, 12 Feb 2021 10:49:20 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 12/31] exec: Use cpu_untagged_addr in g2h; split out g2h_untagged Date: Fri, 12 Feb 2021 10:48:43 -0800 Message-Id: <20210212184902.1251044-13-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::534; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x534.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Use g2h_untagged in contexts that have no cpu, e.g. the binary loaders that operate before the primary cpu is created. As a colollary, target_mmap and friends must use untagged addresses, since they are used by the loaders. Use g2h_untagged on values returned from target_mmap, as the kernel never applies a tag itself. Use g2h_untagged on all pc values. The only current user of tags, aarch64, removes tags from code addresses upon branch, so "pc" is always untagged. Use g2h with the cpu context on hand wherever possible. Use g2h_untagged in lock_user, which will be updated soon. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- bsd-user/qemu.h | 8 ++-- include/exec/cpu_ldst.h | 12 +++++- include/exec/exec-all.h | 2 +- linux-user/qemu.h | 6 +-- accel/tcg/translate-all.c | 4 +- accel/tcg/user-exec.c | 48 ++++++++++++------------ bsd-user/elfload.c | 2 +- bsd-user/main.c | 4 +- bsd-user/mmap.c | 23 ++++++------ linux-user/elfload.c | 12 +++--- linux-user/flatload.c | 2 +- linux-user/hppa/cpu_loop.c | 31 ++++++++-------- linux-user/i386/cpu_loop.c | 4 +- linux-user/mmap.c | 45 +++++++++++----------- linux-user/ppc/signal.c | 4 +- linux-user/syscall.c | 72 +++++++++++++++++++----------------- target/arm/helper-a64.c | 4 +- target/hppa/op_helper.c | 2 +- target/i386/tcg/mem_helper.c | 2 +- target/s390x/mem_helper.c | 4 +- 20 files changed, 154 insertions(+), 137 deletions(-) diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h index 4076adabd0..d2bcaab741 100644 --- a/bsd-user/qemu.h +++ b/bsd-user/qemu.h @@ -356,13 +356,13 @@ static inline void *lock_user(int type, abi_ulong gue= st_addr, long len, int copy void *addr; addr =3D g_malloc(len); if (copy) - memcpy(addr, g2h(guest_addr), len); + memcpy(addr, g2h_untagged(guest_addr), len); else memset(addr, 0, len); return addr; } #else - return g2h(guest_addr); + return g2h_untagged(guest_addr); #endif } =20 @@ -376,10 +376,10 @@ static inline void unlock_user(void *host_ptr, abi_ul= ong guest_addr, #ifdef DEBUG_REMAP if (!host_ptr) return; - if (host_ptr =3D=3D g2h(guest_addr)) + if (host_ptr =3D=3D g2h_untagged(guest_addr)) return; if (len > 0) - memcpy(g2h(guest_addr), host_ptr, len); + memcpy(g2h_untagged(guest_addr), host_ptr, len); g_free(host_ptr); #endif } diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index d9dc1de414..c54069e3cd 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -77,7 +77,15 @@ static inline abi_ptr cpu_untagged_addr(CPUState *cs, ab= i_ptr x) #endif =20 /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ -#define g2h(x) ((void *)((uintptr_t)(abi_ptr)(x) + guest_base)) +static inline void *g2h_untagged(abi_ptr x) +{ + return (void *)((uintptr_t)(x) + guest_base); +} + +static inline void *g2h(CPUState *cs, abi_ptr x) +{ + return g2h_untagged(cpu_untagged_addr(cs, x)); +} =20 static inline bool guest_addr_valid(abi_ulong x) { @@ -448,7 +456,7 @@ static inline int cpu_ldsw_code(CPUArchState *env, abi_= ptr addr) static inline void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr, MMUAccessType access_type, int mmu_i= dx) { - return g2h(addr); + return g2h(env_cpu(env), addr); } #else void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr, diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index f933c74c44..d30c7a84f6 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -616,7 +616,7 @@ static inline tb_page_addr_t get_page_addr_code_hostp(C= PUArchState *env, void **hostp) { if (hostp) { - *hostp =3D g2h(addr); + *hostp =3D g2h_untagged(addr); } return addr; } diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 9251337daf..9fbc5edc4b 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -652,7 +652,7 @@ static inline void *lock_user(int type, abi_ulong guest= _addr, long len, int copy return addr; } #else - return g2h(guest_addr); + return g2h_untagged(guest_addr); #endif } =20 @@ -666,10 +666,10 @@ static inline void unlock_user(void *host_ptr, abi_ul= ong guest_addr, #ifdef DEBUG_REMAP if (!host_ptr) return; - if (host_ptr =3D=3D g2h(guest_addr)) + if (host_ptr =3D=3D g2h_untagged(guest_addr)) return; if (len > 0) - memcpy(g2h(guest_addr), host_ptr, len); + memcpy(g2h_untagged(guest_addr), host_ptr, len); g_free(host_ptr); #endif } diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index bba9c8e0b3..2c34adccce 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1762,7 +1762,7 @@ static inline void tb_page_add(PageDesc *p, Translati= onBlock *tb, prot |=3D p2->flags; p2->flags &=3D ~PAGE_WRITE; } - mprotect(g2h(page_addr), qemu_host_page_size, + mprotect(g2h_untagged(page_addr), qemu_host_page_size, (prot & PAGE_BITS) & ~PAGE_WRITE); if (DEBUG_TB_INVALIDATE_GATE) { printf("protecting code page: 0x" TB_PAGE_ADDR_FMT "\n", page_= addr); @@ -2912,7 +2912,7 @@ int page_unprotect(target_ulong address, uintptr_t pc) } #endif } - mprotect((void *)g2h(host_start), qemu_host_page_size, + mprotect((void *)g2h_untagged(host_start), qemu_host_page_size, prot & PAGE_BITS); } mmap_unlock(); diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index 0b6f56ca40..fa1847b2a6 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -234,7 +234,7 @@ int probe_access_flags(CPUArchState *env, target_ulong = addr, int flags; =20 flags =3D probe_access_internal(env, addr, 0, access_type, nonfault, r= a); - *phost =3D flags ? NULL : g2h(addr); + *phost =3D flags ? NULL : g2h(env_cpu(env), addr); return flags; } =20 @@ -247,7 +247,7 @@ void *probe_access(CPUArchState *env, target_ulong addr= , int size, flags =3D probe_access_internal(env, addr, size, access_type, false, r= a); g_assert(flags =3D=3D 0); =20 - return size ? g2h(addr) : NULL; + return size ? g2h(env_cpu(env), addr) : NULL; } =20 #if defined(__i386__) @@ -842,7 +842,7 @@ uint32_t cpu_ldub_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_UB, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldub_p(g2h(ptr)); + ret =3D ldub_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -853,7 +853,7 @@ int cpu_ldsb_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_SB, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldsb_p(g2h(ptr)); + ret =3D ldsb_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -864,7 +864,7 @@ uint32_t cpu_lduw_be_data(CPUArchState *env, abi_ptr pt= r) uint16_t meminfo =3D trace_mem_get_info(MO_BEUW, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D lduw_be_p(g2h(ptr)); + ret =3D lduw_be_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -875,7 +875,7 @@ int cpu_ldsw_be_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_BESW, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldsw_be_p(g2h(ptr)); + ret =3D ldsw_be_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -886,7 +886,7 @@ uint32_t cpu_ldl_be_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_BEUL, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldl_be_p(g2h(ptr)); + ret =3D ldl_be_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -897,7 +897,7 @@ uint64_t cpu_ldq_be_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_BEQ, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldq_be_p(g2h(ptr)); + ret =3D ldq_be_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -908,7 +908,7 @@ uint32_t cpu_lduw_le_data(CPUArchState *env, abi_ptr pt= r) uint16_t meminfo =3D trace_mem_get_info(MO_LEUW, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D lduw_le_p(g2h(ptr)); + ret =3D lduw_le_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -919,7 +919,7 @@ int cpu_ldsw_le_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_LESW, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldsw_le_p(g2h(ptr)); + ret =3D ldsw_le_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -930,7 +930,7 @@ uint32_t cpu_ldl_le_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_LEUL, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldl_le_p(g2h(ptr)); + ret =3D ldl_le_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -941,7 +941,7 @@ uint64_t cpu_ldq_le_data(CPUArchState *env, abi_ptr ptr) uint16_t meminfo =3D trace_mem_get_info(MO_LEQ, MMU_USER_IDX, false); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - ret =3D ldq_le_p(g2h(ptr)); + ret =3D ldq_le_p(g2h(env_cpu(env), ptr)); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); return ret; } @@ -1051,7 +1051,7 @@ void cpu_stb_data(CPUArchState *env, abi_ptr ptr, uin= t32_t val) uint16_t meminfo =3D trace_mem_get_info(MO_UB, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stb_p(g2h(ptr), val); + stb_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1060,7 +1060,7 @@ void cpu_stw_be_data(CPUArchState *env, abi_ptr ptr, = uint32_t val) uint16_t meminfo =3D trace_mem_get_info(MO_BEUW, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stw_be_p(g2h(ptr), val); + stw_be_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1069,7 +1069,7 @@ void cpu_stl_be_data(CPUArchState *env, abi_ptr ptr, = uint32_t val) uint16_t meminfo =3D trace_mem_get_info(MO_BEUL, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stl_be_p(g2h(ptr), val); + stl_be_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1078,7 +1078,7 @@ void cpu_stq_be_data(CPUArchState *env, abi_ptr ptr, = uint64_t val) uint16_t meminfo =3D trace_mem_get_info(MO_BEQ, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stq_be_p(g2h(ptr), val); + stq_be_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1087,7 +1087,7 @@ void cpu_stw_le_data(CPUArchState *env, abi_ptr ptr, = uint32_t val) uint16_t meminfo =3D trace_mem_get_info(MO_LEUW, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stw_le_p(g2h(ptr), val); + stw_le_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1096,7 +1096,7 @@ void cpu_stl_le_data(CPUArchState *env, abi_ptr ptr, = uint32_t val) uint16_t meminfo =3D trace_mem_get_info(MO_LEUL, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stl_le_p(g2h(ptr), val); + stl_le_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1105,7 +1105,7 @@ void cpu_stq_le_data(CPUArchState *env, abi_ptr ptr, = uint64_t val) uint16_t meminfo =3D trace_mem_get_info(MO_LEQ, MMU_USER_IDX, true); =20 trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo); - stq_le_p(g2h(ptr), val); + stq_le_p(g2h(env_cpu(env), ptr), val); qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo); } =20 @@ -1170,7 +1170,7 @@ uint32_t cpu_ldub_code(CPUArchState *env, abi_ptr ptr) uint32_t ret; =20 set_helper_retaddr(1); - ret =3D ldub_p(g2h(ptr)); + ret =3D ldub_p(g2h_untagged(ptr)); clear_helper_retaddr(); return ret; } @@ -1180,7 +1180,7 @@ uint32_t cpu_lduw_code(CPUArchState *env, abi_ptr ptr) uint32_t ret; =20 set_helper_retaddr(1); - ret =3D lduw_p(g2h(ptr)); + ret =3D lduw_p(g2h_untagged(ptr)); clear_helper_retaddr(); return ret; } @@ -1190,7 +1190,7 @@ uint32_t cpu_ldl_code(CPUArchState *env, abi_ptr ptr) uint32_t ret; =20 set_helper_retaddr(1); - ret =3D ldl_p(g2h(ptr)); + ret =3D ldl_p(g2h_untagged(ptr)); clear_helper_retaddr(); return ret; } @@ -1200,7 +1200,7 @@ uint64_t cpu_ldq_code(CPUArchState *env, abi_ptr ptr) uint64_t ret; =20 set_helper_retaddr(1); - ret =3D ldq_p(g2h(ptr)); + ret =3D ldq_p(g2h_untagged(ptr)); clear_helper_retaddr(); return ret; } @@ -1213,7 +1213,7 @@ static void *atomic_mmu_lookup(CPUArchState *env, tar= get_ulong addr, if (unlikely(addr & (size - 1))) { cpu_loop_exit_atomic(env_cpu(env), retaddr); } - void *ret =3D g2h(addr); + void *ret =3D g2h(env_cpu(env), addr); set_helper_retaddr(retaddr); return ret; } diff --git a/bsd-user/elfload.c b/bsd-user/elfload.c index 32378af7b2..5f4d824d78 100644 --- a/bsd-user/elfload.c +++ b/bsd-user/elfload.c @@ -737,7 +737,7 @@ static void padzero(abi_ulong elf_bss, abi_ulong last_b= ss) end_addr1 =3D REAL_HOST_PAGE_ALIGN(elf_bss); end_addr =3D HOST_PAGE_ALIGN(elf_bss); if (end_addr1 < end_addr) { - mmap((void *)g2h(end_addr1), end_addr - end_addr1, + mmap((void *)g2h_untagged(end_addr1), end_addr - end_addr1, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_FIXED|MAP_PRIVATE|MAP_ANON, -1, 0); } diff --git a/bsd-user/main.c b/bsd-user/main.c index 385d35886a..798aba512c 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -1055,7 +1055,7 @@ int main(int argc, char **argv) env->idt.base =3D target_mmap(0, sizeof(uint64_t) * (env->idt.limit + = 1), PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); - idt_table =3D g2h(env->idt.base); + idt_table =3D g2h_untagged(env->idt.base); set_idt(0, 0); set_idt(1, 0); set_idt(2, 0); @@ -1085,7 +1085,7 @@ int main(int argc, char **argv) PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); env->gdt.limit =3D sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; - gdt_table =3D g2h(env->gdt.base); + gdt_table =3D g2h_untagged(env->gdt.base); #ifdef TARGET_ABI32 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c index 17f4cd80aa..01ec808003 100644 --- a/bsd-user/mmap.c +++ b/bsd-user/mmap.c @@ -102,7 +102,8 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= prot) } end =3D host_end; } - ret =3D mprotect(g2h(host_start), qemu_host_page_size, prot1 & PAG= E_BITS); + ret =3D mprotect(g2h_untagged(host_start), + qemu_host_page_size, prot1 & PAGE_BITS); if (ret !=3D 0) goto error; host_start +=3D qemu_host_page_size; @@ -112,8 +113,8 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= prot) for(addr =3D end; addr < host_end; addr +=3D TARGET_PAGE_SIZE) { prot1 |=3D page_get_flags(addr); } - ret =3D mprotect(g2h(host_end - qemu_host_page_size), qemu_host_pa= ge_size, - prot1 & PAGE_BITS); + ret =3D mprotect(g2h_untagged(host_end - qemu_host_page_size), + qemu_host_page_size, prot1 & PAGE_BITS); if (ret !=3D 0) goto error; host_end -=3D qemu_host_page_size; @@ -121,7 +122,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= prot) =20 /* handle the pages in the middle */ if (host_start < host_end) { - ret =3D mprotect(g2h(host_start), host_end - host_start, prot); + ret =3D mprotect(g2h_untagged(host_start), host_end - host_start, = prot); if (ret !=3D 0) goto error; } @@ -143,7 +144,7 @@ static int mmap_frag(abi_ulong real_start, int prot1, prot_new; =20 real_end =3D real_start + qemu_host_page_size; - host_start =3D g2h(real_start); + host_start =3D g2h_untagged(real_start); =20 /* get the protection of the target pages outside the mapping */ prot1 =3D 0; @@ -175,7 +176,7 @@ static int mmap_frag(abi_ulong real_start, mprotect(host_start, qemu_host_page_size, prot1 | PROT_WRITE); =20 /* read the corresponding file data */ - pread(fd, g2h(start), end - start, offset); + pread(fd, g2h_untagged(start), end - start, offset); =20 /* put final protection */ if (prot_new !=3D (prot1 | PROT_WRITE)) @@ -300,7 +301,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t prot, /* Note: we prefer to control the mapping address. It is especially important if qemu_host_page_size > qemu_real_host_page_size */ - p =3D mmap(g2h(mmap_start), + p =3D mmap(g2h_untagged(mmap_start), host_len, prot, flags | MAP_FIXED, fd, host_offset); if (p =3D=3D MAP_FAILED) goto fail; @@ -344,7 +345,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t prot, -1, 0); if (retaddr =3D=3D -1) goto fail; - pread(fd, g2h(start), len, offset); + pread(fd, g2h_untagged(start), len, offset); if (!(prot & PROT_WRITE)) { ret =3D target_mprotect(start, len, prot); if (ret !=3D 0) { @@ -390,7 +391,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t prot, offset1 =3D 0; else offset1 =3D offset + real_start - start; - p =3D mmap(g2h(real_start), real_end - real_start, + p =3D mmap(g2h_untagged(real_start), real_end - real_start, prot, flags, fd, offset1); if (p =3D=3D MAP_FAILED) goto fail; @@ -456,7 +457,7 @@ int target_munmap(abi_ulong start, abi_ulong len) ret =3D 0; /* unmap what we can */ if (real_start < real_end) { - ret =3D munmap(g2h(real_start), real_end - real_start); + ret =3D munmap(g2h_untagged(real_start), real_end - real_start); } =20 if (ret =3D=3D 0) @@ -479,5 +480,5 @@ int target_msync(abi_ulong start, abi_ulong len, int fl= ags) return 0; =20 start &=3D qemu_host_page_mask; - return msync(g2h(start), end - start, flags); + return msync(g2h_untagged(start), end - start, flags); } diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 29f07bb234..f542841ba2 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -389,7 +389,7 @@ enum { =20 static bool init_guest_commpage(void) { - void *want =3D g2h(ARM_COMMPAGE & -qemu_host_page_size); + void *want =3D g2h_untagged(ARM_COMMPAGE & -qemu_host_page_size); void *addr =3D mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); =20 @@ -402,7 +402,7 @@ static bool init_guest_commpage(void) } =20 /* Set kernel helper versions; rest of page is 0. */ - __put_user(5, (uint32_t *)g2h(0xffff0ffcu)); + __put_user(5, (uint32_t *)g2h_untagged(0xffff0ffcu)); =20 if (mprotect(addr, qemu_host_page_size, PROT_READ)) { perror("Protecting guest commpage"); @@ -1872,8 +1872,8 @@ static void zero_bss(abi_ulong elf_bss, abi_ulong las= t_bss, int prot) here is still actually needed. For now, continue with it, but merge it with the "normal" mmap that would allocate the bss. */ =20 - host_start =3D (uintptr_t) g2h(elf_bss); - host_end =3D (uintptr_t) g2h(last_bss); + host_start =3D (uintptr_t) g2h_untagged(elf_bss); + host_end =3D (uintptr_t) g2h_untagged(last_bss); host_map_start =3D REAL_HOST_PAGE_ALIGN(host_start); =20 if (host_map_start < host_end) { @@ -2171,7 +2171,7 @@ static void pgb_have_guest_base(const char *image_nam= e, abi_ulong guest_loaddr, } =20 /* Reserve the address space for the binary, or reserved_va. */ - test =3D g2h(guest_loaddr); + test =3D g2h_untagged(guest_loaddr); addr =3D mmap(test, guest_hiaddr - guest_loaddr, PROT_NONE, flags, -1,= 0); if (test !=3D addr) { pgb_fail_in_use(image_name); @@ -2393,7 +2393,7 @@ static void pgb_reserved_va(const char *image_name, a= bi_ulong guest_loaddr, =20 /* Reserve the memory on the host. */ assert(guest_base !=3D 0); - test =3D g2h(0); + test =3D g2h_untagged(0); addr =3D mmap(test, reserved_va, PROT_NONE, flags, -1, 0); if (addr =3D=3D MAP_FAILED || addr !=3D test) { error_report("Unable to reserve 0x%lx bytes of virtual address " diff --git a/linux-user/flatload.c b/linux-user/flatload.c index 14d2999d15..3e5594cf89 100644 --- a/linux-user/flatload.c +++ b/linux-user/flatload.c @@ -668,7 +668,7 @@ static int load_flat_file(struct linux_binprm * bprm, } =20 /* zero the BSS. */ - memset(g2h(datapos + data_len), 0, bss_len); + memset(g2h_untagged(datapos + data_len), 0, bss_len); =20 return 0; } diff --git a/linux-user/hppa/cpu_loop.c b/linux-user/hppa/cpu_loop.c index d7e1ec7722..944511bbe4 100644 --- a/linux-user/hppa/cpu_loop.c +++ b/linux-user/hppa/cpu_loop.c @@ -23,6 +23,7 @@ =20 static abi_ulong hppa_lws(CPUHPPAState *env) { + CPUState *cs =3D env_cpu(env); uint32_t which =3D env->gr[20]; abi_ulong addr =3D env->gr[26]; abi_ulong old =3D env->gr[25]; @@ -39,7 +40,7 @@ static abi_ulong hppa_lws(CPUHPPAState *env) } old =3D tswap32(old); new =3D tswap32(new); - ret =3D qatomic_cmpxchg((uint32_t *)g2h(addr), old, new); + ret =3D qatomic_cmpxchg((uint32_t *)g2h(cs, addr), old, new); ret =3D tswap32(ret); break; =20 @@ -58,38 +59,38 @@ static abi_ulong hppa_lws(CPUHPPAState *env) can be host-endian as well. */ switch (size) { case 0: - old =3D *(uint8_t *)g2h(old); - new =3D *(uint8_t *)g2h(new); - ret =3D qatomic_cmpxchg((uint8_t *)g2h(addr), old, new); + old =3D *(uint8_t *)g2h(cs, old); + new =3D *(uint8_t *)g2h(cs, new); + ret =3D qatomic_cmpxchg((uint8_t *)g2h(cs, addr), old, new); ret =3D ret !=3D old; break; case 1: - old =3D *(uint16_t *)g2h(old); - new =3D *(uint16_t *)g2h(new); - ret =3D qatomic_cmpxchg((uint16_t *)g2h(addr), old, new); + old =3D *(uint16_t *)g2h(cs, old); + new =3D *(uint16_t *)g2h(cs, new); + ret =3D qatomic_cmpxchg((uint16_t *)g2h(cs, addr), old, new); ret =3D ret !=3D old; break; case 2: - old =3D *(uint32_t *)g2h(old); - new =3D *(uint32_t *)g2h(new); - ret =3D qatomic_cmpxchg((uint32_t *)g2h(addr), old, new); + old =3D *(uint32_t *)g2h(cs, old); + new =3D *(uint32_t *)g2h(cs, new); + ret =3D qatomic_cmpxchg((uint32_t *)g2h(cs, addr), old, new); ret =3D ret !=3D old; break; case 3: { uint64_t o64, n64, r64; - o64 =3D *(uint64_t *)g2h(old); - n64 =3D *(uint64_t *)g2h(new); + o64 =3D *(uint64_t *)g2h(cs, old); + n64 =3D *(uint64_t *)g2h(cs, new); #ifdef CONFIG_ATOMIC64 - r64 =3D qatomic_cmpxchg__nocheck((uint64_t *)g2h(addr), + r64 =3D qatomic_cmpxchg__nocheck((uint64_t *)g2h(cs, addr), o64, n64); ret =3D r64 !=3D o64; #else start_exclusive(); - r64 =3D *(uint64_t *)g2h(addr); + r64 =3D *(uint64_t *)g2h(cs, addr); ret =3D 1; if (r64 =3D=3D o64) { - *(uint64_t *)g2h(addr) =3D n64; + *(uint64_t *)g2h(cs, addr) =3D n64; ret =3D 0; } end_exclusive(); diff --git a/linux-user/i386/cpu_loop.c b/linux-user/i386/cpu_loop.c index 70cde417e6..19c8a18cd3 100644 --- a/linux-user/i386/cpu_loop.c +++ b/linux-user/i386/cpu_loop.c @@ -379,7 +379,7 @@ void target_cpu_copy_regs(CPUArchState *env, struct tar= get_pt_regs *regs) env->idt.base =3D target_mmap(0, sizeof(uint64_t) * (env->idt.limit + = 1), PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); - idt_table =3D g2h(env->idt.base); + idt_table =3D g2h_untagged(env->idt.base); set_idt(0, 0); set_idt(1, 0); set_idt(2, 0); @@ -409,7 +409,7 @@ void target_cpu_copy_regs(CPUArchState *env, struct tar= get_pt_regs *regs) PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); env->gdt.limit =3D sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; - gdt_table =3D g2h(env->gdt.base); + gdt_table =3D g2h_untagged(env->gdt.base); #ifdef TARGET_ABI32 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 7fb4c628e1..088c50592c 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -141,7 +141,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= target_prot) } end =3D host_end; } - ret =3D mprotect(g2h(host_start), qemu_host_page_size, + ret =3D mprotect(g2h_untagged(host_start), qemu_host_page_size, prot1 & PAGE_BITS); if (ret !=3D 0) { goto error; @@ -153,7 +153,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= target_prot) for (addr =3D end; addr < host_end; addr +=3D TARGET_PAGE_SIZE) { prot1 |=3D page_get_flags(addr); } - ret =3D mprotect(g2h(host_end - qemu_host_page_size), + ret =3D mprotect(g2h_untagged(host_end - qemu_host_page_size), qemu_host_page_size, prot1 & PAGE_BITS); if (ret !=3D 0) { goto error; @@ -163,7 +163,8 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= target_prot) =20 /* handle the pages in the middle */ if (host_start < host_end) { - ret =3D mprotect(g2h(host_start), host_end - host_start, host_prot= ); + ret =3D mprotect(g2h_untagged(host_start), + host_end - host_start, host_prot); if (ret !=3D 0) { goto error; } @@ -186,7 +187,7 @@ static int mmap_frag(abi_ulong real_start, int prot1, prot_new; =20 real_end =3D real_start + qemu_host_page_size; - host_start =3D g2h(real_start); + host_start =3D g2h_untagged(real_start); =20 /* get the protection of the target pages outside the mapping */ prot1 =3D 0; @@ -218,7 +219,7 @@ static int mmap_frag(abi_ulong real_start, mprotect(host_start, qemu_host_page_size, prot1 | PROT_WRITE); =20 /* read the corresponding file data */ - if (pread(fd, g2h(start), end - start, offset) =3D=3D -1) + if (pread(fd, g2h_untagged(start), end - start, offset) =3D=3D -1) return -1; =20 /* put final protection */ @@ -229,7 +230,7 @@ static int mmap_frag(abi_ulong real_start, mprotect(host_start, qemu_host_page_size, prot_new); } if (prot_new & PROT_WRITE) { - memset(g2h(start), 0, end - start); + memset(g2h_untagged(start), 0, end - start); } } return 0; @@ -338,7 +339,7 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size= , abi_ulong align) * - mremap() with MREMAP_FIXED flag * - shmat() with SHM_REMAP flag */ - ptr =3D mmap(g2h(addr), size, PROT_NONE, + ptr =3D mmap(g2h_untagged(addr), size, PROT_NONE, MAP_ANONYMOUS|MAP_PRIVATE|MAP_NORESERVE, -1, 0); =20 /* ENOMEM, if host address space has no memory */ @@ -497,7 +498,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t target_prot, /* Note: we prefer to control the mapping address. It is especially important if qemu_host_page_size > qemu_real_host_page_size */ - p =3D mmap(g2h(start), host_len, host_prot, + p =3D mmap(g2h_untagged(start), host_len, host_prot, flags | MAP_FIXED | MAP_ANONYMOUS, -1, 0); if (p =3D=3D MAP_FAILED) { goto fail; @@ -505,10 +506,10 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, = int target_prot, /* update start so that it points to the file position at 'offset'= */ host_start =3D (unsigned long)p; if (!(flags & MAP_ANONYMOUS)) { - p =3D mmap(g2h(start), len, host_prot, + p =3D mmap(g2h_untagged(start), len, host_prot, flags | MAP_FIXED, fd, host_offset); if (p =3D=3D MAP_FAILED) { - munmap(g2h(start), host_len); + munmap(g2h_untagged(start), host_len); goto fail; } host_start +=3D offset - host_offset; @@ -548,7 +549,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t target_prot, -1, 0); if (retaddr =3D=3D -1) goto fail; - if (pread(fd, g2h(start), len, offset) =3D=3D -1) + if (pread(fd, g2h_untagged(start), len, offset) =3D=3D -1) goto fail; if (!(host_prot & PROT_WRITE)) { ret =3D target_mprotect(start, len, target_prot); @@ -592,7 +593,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t target_prot, offset1 =3D 0; else offset1 =3D offset + real_start - start; - p =3D mmap(g2h(real_start), real_end - real_start, + p =3D mmap(g2h_untagged(real_start), real_end - real_start, host_prot, flags, fd, offset1); if (p =3D=3D MAP_FAILED) goto fail; @@ -652,7 +653,7 @@ static void mmap_reserve(abi_ulong start, abi_ulong siz= e) real_end -=3D qemu_host_page_size; } if (real_start !=3D real_end) { - mmap(g2h(real_start), real_end - real_start, PROT_NONE, + mmap(g2h_untagged(real_start), real_end - real_start, PROT_NONE, MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE, -1, 0); } @@ -707,7 +708,7 @@ int target_munmap(abi_ulong start, abi_ulong len) if (reserved_va) { mmap_reserve(real_start, real_end - real_start); } else { - ret =3D munmap(g2h(real_start), real_end - real_start); + ret =3D munmap(g2h_untagged(real_start), real_end - real_start= ); } } =20 @@ -736,8 +737,8 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong ol= d_size, mmap_lock(); =20 if (flags & MREMAP_FIXED) { - host_addr =3D mremap(g2h(old_addr), old_size, new_size, - flags, g2h(new_addr)); + host_addr =3D mremap(g2h_untagged(old_addr), old_size, new_size, + flags, g2h_untagged(new_addr)); =20 if (reserved_va && host_addr !=3D MAP_FAILED) { /* If new and old addresses overlap then the above mremap will @@ -753,8 +754,9 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong ol= d_size, errno =3D ENOMEM; host_addr =3D MAP_FAILED; } else { - host_addr =3D mremap(g2h(old_addr), old_size, new_size, - flags | MREMAP_FIXED, g2h(mmap_start)); + host_addr =3D mremap(g2h_untagged(old_addr), old_size, new_siz= e, + flags | MREMAP_FIXED, + g2h_untagged(mmap_start)); if (reserved_va) { mmap_reserve(old_addr, old_size); } @@ -770,14 +772,15 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong = old_size, } } if (prot =3D=3D 0) { - host_addr =3D mremap(g2h(old_addr), old_size, new_size, flags); + host_addr =3D mremap(g2h_untagged(old_addr), + old_size, new_size, flags); =20 if (host_addr !=3D MAP_FAILED) { /* Check if address fits target address space */ if (!guest_range_valid(h2g(host_addr), new_size)) { /* Revert mremap() changes */ - host_addr =3D mremap(g2h(old_addr), new_size, old_size, - flags); + host_addr =3D mremap(g2h_untagged(old_addr), + new_size, old_size, flags); errno =3D ENOMEM; host_addr =3D MAP_FAILED; } else if (reserved_va && old_size > new_size) { diff --git a/linux-user/ppc/signal.c b/linux-user/ppc/signal.c index 20a02c197c..b78613f7c8 100644 --- a/linux-user/ppc/signal.c +++ b/linux-user/ppc/signal.c @@ -365,7 +365,7 @@ static void restore_user_regs(CPUPPCState *env, uint64_t v_addr; /* 64-bit needs to recover the pointer to the vectors from the fra= me */ __get_user(v_addr, &frame->v_regs); - v_regs =3D g2h(v_addr); + v_regs =3D g2h(env_cpu(env), v_addr); #else v_regs =3D (ppc_avr_t *)frame->mc_vregs.altivec; #endif @@ -552,7 +552,7 @@ void setup_rt_frame(int sig, struct target_sigaction *k= a, if (get_ppc64_abi(image) < 2) { /* ELFv1 PPC64 function pointers are pointers to OPD entries. */ struct target_func_ptr *handler =3D - (struct target_func_ptr *)g2h(ka->_sa_handler); + (struct target_func_ptr *)g2h(env_cpu(env), ka->_sa_handler); env->nip =3D tswapl(handler->entry); env->gpr[2] =3D tswapl(handler->toc); } else { diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6001022e96..748893904e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -907,7 +907,7 @@ abi_long do_brk(abi_ulong new_brk) /* Heap contents are initialized to zero, as for anonymous * mapped pages. */ if (new_brk > target_brk) { - memset(g2h(target_brk), 0, new_brk - target_brk); + memset(g2h_untagged(target_brk), 0, new_brk - target_brk); } target_brk =3D new_brk; DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <=3D brk_page)\n", target_= brk); @@ -933,7 +933,7 @@ abi_long do_brk(abi_ulong new_brk) * come from the remaining part of the previous page: it may * contains garbage data due to a previous heap usage (grown * then shrunken). */ - memset(g2h(target_brk), 0, brk_page - target_brk); + memset(g2h_untagged(target_brk), 0, brk_page - target_brk); =20 target_brk =3D new_brk; brk_page =3D HOST_PAGE_ALIGN(target_brk); @@ -4611,7 +4611,7 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_en= v, mmap_lock(); =20 if (shmaddr) - host_raddr =3D shmat(shmid, (void *)g2h(shmaddr), shmflg); + host_raddr =3D shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg); else { abi_ulong mmap_start; =20 @@ -4622,7 +4622,8 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_en= v, errno =3D ENOMEM; host_raddr =3D (void *)-1; } else - host_raddr =3D shmat(shmid, g2h(mmap_start), shmflg | SHM_REMA= P); + host_raddr =3D shmat(shmid, g2h_untagged(mmap_start), + shmflg | SHM_REMAP); } =20 if (host_raddr =3D=3D (void *)-1) { @@ -4663,7 +4664,7 @@ static inline abi_long do_shmdt(abi_ulong shmaddr) break; } } - rv =3D get_errno(shmdt(g2h(shmaddr))); + rv =3D get_errno(shmdt(g2h_untagged(shmaddr))); =20 mmap_unlock(); =20 @@ -6133,10 +6134,10 @@ static abi_long write_ldt(CPUX86State *env, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); if (env->ldt.base =3D=3D -1) return -TARGET_ENOMEM; - memset(g2h(env->ldt.base), 0, + memset(g2h_untagged(env->ldt.base), 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); env->ldt.limit =3D 0xffff; - ldt_table =3D g2h(env->ldt.base); + ldt_table =3D g2h_untagged(env->ldt.base); } =20 /* NOTE: same code as Linux kernel */ @@ -6204,7 +6205,7 @@ static abi_long do_modify_ldt(CPUX86State *env, int f= unc, abi_ulong ptr, #if defined(TARGET_ABI32) abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) { - uint64_t *gdt_table =3D g2h(env->gdt.base); + uint64_t *gdt_table =3D g2h_untagged(env->gdt.base); struct target_modify_ldt_ldt_s ldt_info; struct target_modify_ldt_ldt_s *target_ldt_info; int seg_32bit, contents, read_exec_only, limit_in_pages; @@ -6290,7 +6291,7 @@ install: static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) { struct target_modify_ldt_ldt_s *target_ldt_info; - uint64_t *gdt_table =3D g2h(env->gdt.base); + uint64_t *gdt_table =3D g2h_untagged(env->gdt.base); uint32_t base_addr, limit, flags; int seg_32bit, contents, read_exec_only, limit_in_pages, idx; int seg_not_present, useable, lm; @@ -7585,8 +7586,8 @@ static int do_safe_futex(int *uaddr, int op, int val, tricky. However they're probably useless because guest atomic operations won't work either. */ #if defined(TARGET_NR_futex) -static int do_futex(target_ulong uaddr, int op, int val, target_ulong time= out, - target_ulong uaddr2, int val3) +static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val, + target_ulong timeout, target_ulong uaddr2, int val3) { struct timespec ts, *pts; int base_op; @@ -7607,11 +7608,14 @@ static int do_futex(target_ulong uaddr, int op, int= val, target_ulong timeout, } else { pts =3D NULL; } - return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3= ); + return do_safe_futex(g2h(cpu, uaddr), + op, tswap32(val), pts, NULL, val3); case FUTEX_WAKE: - return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); + return do_safe_futex(g2h(cpu, uaddr), + op, val, NULL, NULL, 0); case FUTEX_FD: - return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); + return do_safe_futex(g2h(cpu, uaddr), + op, val, NULL, NULL, 0); case FUTEX_REQUEUE: case FUTEX_CMP_REQUEUE: case FUTEX_WAKE_OP: @@ -7621,10 +7625,9 @@ static int do_futex(target_ulong uaddr, int op, int = val, target_ulong timeout, to satisfy the compiler. We do not need to tswap TIMEOUT since it's not compared to guest memory. */ pts =3D (struct timespec *)(uintptr_t) timeout; - return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2), + return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr= 2), (base_op =3D=3D FUTEX_CMP_REQUEUE - ? tswap32(val3) - : val3)); + ? tswap32(val3) : val3)); default: return -TARGET_ENOSYS; } @@ -7632,7 +7635,8 @@ static int do_futex(target_ulong uaddr, int op, int v= al, target_ulong timeout, #endif =20 #if defined(TARGET_NR_futex_time64) -static int do_futex_time64(target_ulong uaddr, int op, int val, target_ulo= ng timeout, +static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op, + int val, target_ulong timeout, target_ulong uaddr2, int val3) { struct timespec ts, *pts; @@ -7656,11 +7660,12 @@ static int do_futex_time64(target_ulong uaddr, int = op, int val, target_ulong tim } else { pts =3D NULL; } - return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3= ); + return do_safe_futex(g2h(cpu, uaddr), op, + tswap32(val), pts, NULL, val3); case FUTEX_WAKE: - return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); + return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); case FUTEX_FD: - return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0); + return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); case FUTEX_REQUEUE: case FUTEX_CMP_REQUEUE: case FUTEX_WAKE_OP: @@ -7670,10 +7675,9 @@ static int do_futex_time64(target_ulong uaddr, int o= p, int val, target_ulong tim to satisfy the compiler. We do not need to tswap TIMEOUT since it's not compared to guest memory. */ pts =3D (struct timespec *)(uintptr_t) timeout; - return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2), + return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr= 2), (base_op =3D=3D FUTEX_CMP_REQUEUE - ? tswap32(val3) - : val3)); + ? tswap32(val3) : val3)); default: return -TARGET_ENOSYS; } @@ -7848,7 +7852,7 @@ static int open_self_maps(void *cpu_env, int fd) const char *path; =20 max =3D h2g_valid(max - 1) ? - max : (uintptr_t) g2h(GUEST_ADDR_MAX) + 1; + max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1; =20 if (page_check_range(h2g(min), max - min, flags) =3D=3D -1) { continue; @@ -8265,8 +8269,8 @@ static abi_long do_syscall1(void *cpu_env, int num, a= bi_long arg1, =20 if (ts->child_tidptr) { put_user_u32(0, ts->child_tidptr); - do_sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX, - NULL, NULL, 0); + do_sys_futex(g2h(cpu, ts->child_tidptr), + FUTEX_WAKE, INT_MAX, NULL, NULL, 0); } thread_cpu =3D NULL; g_free(ts); @@ -8631,7 +8635,7 @@ static abi_long do_syscall1(void *cpu_env, int num, a= bi_long arg1, if (!arg5) { ret =3D mount(p, p2, p3, (unsigned long)arg4, NULL); } else { - ret =3D mount(p, p2, p3, (unsigned long)arg4, g2h(arg5)); + ret =3D mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg= 5)); } ret =3D get_errno(ret); =20 @@ -9726,15 +9730,15 @@ static abi_long do_syscall1(void *cpu_env, int num,= abi_long arg1, /* ??? msync/mlock/munlock are broken for softmmu. */ #ifdef TARGET_NR_msync case TARGET_NR_msync: - return get_errno(msync(g2h(arg1), arg2, arg3)); + return get_errno(msync(g2h(cpu, arg1), arg2, arg3)); #endif #ifdef TARGET_NR_mlock case TARGET_NR_mlock: - return get_errno(mlock(g2h(arg1), arg2)); + return get_errno(mlock(g2h(cpu, arg1), arg2)); #endif #ifdef TARGET_NR_munlock case TARGET_NR_munlock: - return get_errno(munlock(g2h(arg1), arg2)); + return get_errno(munlock(g2h(cpu, arg1), arg2)); #endif #ifdef TARGET_NR_mlockall case TARGET_NR_mlockall: @@ -12225,7 +12229,7 @@ static abi_long do_syscall1(void *cpu_env, int num,= abi_long arg1, =20 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) case TARGET_NR_set_tid_address: - return get_errno(set_tid_address((int *)g2h(arg1))); + return get_errno(set_tid_address((int *)g2h(cpu, arg1))); #endif =20 case TARGET_NR_tkill: @@ -12312,11 +12316,11 @@ static abi_long do_syscall1(void *cpu_env, int nu= m, abi_long arg1, #endif #ifdef TARGET_NR_futex case TARGET_NR_futex: - return do_futex(arg1, arg2, arg3, arg4, arg5, arg6); + return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6); #endif #ifdef TARGET_NR_futex_time64 case TARGET_NR_futex_time64: - return do_futex_time64(arg1, arg2, arg3, arg4, arg5, arg6); + return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6); #endif #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) case TARGET_NR_inotify_init: diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c index ae611d73c2..7f56c78fa6 100644 --- a/target/arm/helper-a64.c +++ b/target/arm/helper-a64.c @@ -542,7 +542,7 @@ uint64_t HELPER(paired_cmpxchg64_le)(CPUARMState *env, = uint64_t addr, =20 #ifdef CONFIG_USER_ONLY /* ??? Enforce alignment. */ - uint64_t *haddr =3D g2h(addr); + uint64_t *haddr =3D g2h(env_cpu(env), addr); =20 set_helper_retaddr(ra); o0 =3D ldq_le_p(haddr + 0); @@ -612,7 +612,7 @@ uint64_t HELPER(paired_cmpxchg64_be)(CPUARMState *env, = uint64_t addr, =20 #ifdef CONFIG_USER_ONLY /* ??? Enforce alignment. */ - uint64_t *haddr =3D g2h(addr); + uint64_t *haddr =3D g2h(env_cpu(env), addr); =20 set_helper_retaddr(ra); o1 =3D ldq_be_p(haddr + 0); diff --git a/target/hppa/op_helper.c b/target/hppa/op_helper.c index 7ae31e1a15..96d9391c39 100644 --- a/target/hppa/op_helper.c +++ b/target/hppa/op_helper.c @@ -63,7 +63,7 @@ static void atomic_store_3(CPUHPPAState *env, target_ulon= g addr, uint32_t val, #ifdef CONFIG_USER_ONLY uint32_t old, new, cmp; =20 - uint32_t *haddr =3D g2h(addr - 1); + uint32_t *haddr =3D g2h(env_cpu(env), addr - 1); old =3D *haddr; while (1) { new =3D (old & ~mask) | (val & mask); diff --git a/target/i386/tcg/mem_helper.c b/target/i386/tcg/mem_helper.c index e5cd2de1bf..591f512bff 100644 --- a/target/i386/tcg/mem_helper.c +++ b/target/i386/tcg/mem_helper.c @@ -66,7 +66,7 @@ void helper_cmpxchg8b(CPUX86State *env, target_ulong a0) =20 #ifdef CONFIG_USER_ONLY { - uint64_t *haddr =3D g2h(a0); + uint64_t *haddr =3D g2h(env_cpu(env), a0); cmpv =3D cpu_to_le64(cmpv); newv =3D cpu_to_le64(newv); oldv =3D qatomic_cmpxchg__nocheck(haddr, cmpv, newv); diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index 1901e9dfc7..25cfede806 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -1780,7 +1780,7 @@ static uint32_t do_csst(CPUS390XState *env, uint32_t = r3, uint64_t a1, =20 if (parallel) { #ifdef CONFIG_USER_ONLY - uint32_t *haddr =3D g2h(a1); + uint32_t *haddr =3D g2h(env_cpu(env), a1); ov =3D qatomic_cmpxchg__nocheck(haddr, cv, nv); #else TCGMemOpIdx oi =3D make_memop_idx(MO_TEUL | MO_ALIGN, mem_= idx); @@ -1804,7 +1804,7 @@ static uint32_t do_csst(CPUS390XState *env, uint32_t = r3, uint64_t a1, if (parallel) { #ifdef CONFIG_ATOMIC64 # ifdef CONFIG_USER_ONLY - uint64_t *haddr =3D g2h(a1); + uint64_t *haddr =3D g2h(env_cpu(env), a1); ov =3D qatomic_cmpxchg__nocheck(haddr, cv, nv); # else TCGMemOpIdx oi =3D make_memop_idx(MO_TEQ | MO_ALIGN, mem_i= dx); --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156972; cv=none; d=zohomail.com; s=zohoarc; b=Kn3eka0NrGfbnhjn4oAOQe4eyRkbZNO0iNgZUEyXCpDFn4HPfIJZVP+rLscHsZGGcKk+vgYriwbzhkWzsuJev48QPkdjv/r/XogZLlWSnp8xCp2QWzsowbjRvjgiFQBEcC5FyezlWzcl4zDwnVtPsUvYS/LBZtctBeHptwMsz9Q= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156972; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=i+QGQk1wRzy6Ro0EOko1tw2TQzEaxVBUE4AsBVR40qs=; b=SeNpqkJQGRLtWyjhpB4i5yKSb1WC+gzQKAyGeITfWyQFE86Kr68h0+ml52WxTOgDqSB3g51uE8WYTjMsmMqPP48G7IVlHQC2O/1HhY7/KOEl49GR+5vtG4xqXt9M1qmBpwP65nYjKgc4C1zKr73XmMFfgQAKSix9bZgPZejiNds= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 161315697197448.12181631778992; Fri, 12 Feb 2021 11:09:31 -0800 (PST) Received: from localhost ([::1]:52834 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdog-0001f3-Lw for importer@patchew.org; Fri, 12 Feb 2021 14:09:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39462) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVT-0001cy-QS for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:31 -0500 Received: from mail-pg1-x534.google.com ([2607:f8b0:4864:20::534]:46442) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVM-0007oj-32 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:31 -0500 Received: by mail-pg1-x534.google.com with SMTP id r38so217756pgk.13 for ; Fri, 12 Feb 2021 10:49:22 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=i+QGQk1wRzy6Ro0EOko1tw2TQzEaxVBUE4AsBVR40qs=; b=q4CGnCR3tv5qQPKJAqW48sPpe1a+xzzn0Hyf/wXvVF5Akh241yH8Gz3XKf31eFipJw 3CHiWXX54VT8s5z8FSRPObjOdLHfzQvCKbvHRLCrHpbHoBq44n0HnarCOzP2VGO3B3+v y2nVOnHcZEPse+UkXw0E/PdUadvSO7Prkb7Q6+P/yPLcz0mMMe5NNp6C8wvQybbUgaBW cJxIIYfpZFhX3/uwo4cEZ3BSz66Q0CnqcRRhxFjjdCw8zbxxK6k9HUHs1XHUklYMf1Jh cXcIkXyAsuxssWckmu3zqoeiAKoxlwm7M2A2YVvvCrSWoT4VRffkFMyEIrF50yYbD6H4 1MGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=i+QGQk1wRzy6Ro0EOko1tw2TQzEaxVBUE4AsBVR40qs=; b=O3GxnkyZ8frAyA9WL0g8TlAw+/i4eiXoBPkjgOCUGRZTty+Bq1morZFE8VK4Yb2k64 f59h+QsPYAlnjrH5KiTXEQK/DiEg4MJAaAuDKCbS1hsGtCL02T4hg9g43tixxHNGibUE 2r+qpkrcNsoszEifEaYZZchPIf+zFPVvM9dGoOJfZdE3QZ2P60E1ciFTDyc6Lm4w9OpS AH83rV+5BE2Y8z9iL3fZmYVkhTJRfUM/rVoCEX3mTgoKR5YRgh3ScYOqZzUWgMcl1aKu HKapdMokJo4bv8Nk5LYLoqAMX56E93zOfi3/vABdesAarIUtmlLpVVEC2lbFlpHjA0C7 d6BA== X-Gm-Message-State: AOAM5339Q3OM2WnmLxpDR1hBqeyRBc8l5U5w7BcYYxM9V+F4CLZl0RA4 ztRwGgAlZbScUxS+Iby1SxZ0Bb1Q9o2K/w== X-Google-Smtp-Source: ABdhPJw+yAL9qioL1dYN51emDM3MNf6wPPBXmsCzb2sSybeBkol2sGh55EKFyoALlu41nLA33Vqdzg== X-Received: by 2002:a62:644f:0:b029:1d3:b559:fe7a with SMTP id y76-20020a62644f0000b02901d3b559fe7amr4058961pfb.21.1613155761781; Fri, 12 Feb 2021 10:49:21 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 13/31] linux-user: Explicitly untag memory management syscalls Date: Fri, 12 Feb 2021 10:48:44 -0800 Message-Id: <20210212184902.1251044-14-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::534; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x534.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" We define target_mmap et al as untagged, so that they can be used from the binary loaders. Explicitly call cpu_untagged_addr for munmap, mprotect, mremap syscall entry points. Add a few comments for the syscalls that are exempted by the kernel's tagged-address-abi.rst. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/syscall.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 748893904e..4451f8e4f0 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -889,6 +889,8 @@ abi_long do_brk(abi_ulong new_brk) abi_long mapped_addr; abi_ulong new_alloc_size; =20 + /* brk pointers are always untagged */ + DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); =20 if (!new_brk) { @@ -4588,6 +4590,8 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_en= v, int i,ret; abi_ulong shmlba; =20 + /* shmat pointers are always untagged */ + /* find out the length of the shared memory segment */ ret =3D get_errno(shmctl(shmid, IPC_STAT, &shm_info)); if (is_error(ret)) { @@ -4655,6 +4659,8 @@ static inline abi_long do_shmdt(abi_ulong shmaddr) int i; abi_long rv; =20 + /* shmdt pointers are always untagged */ + mmap_lock(); =20 for (i =3D 0; i < N_SHM_REGIONS; ++i) { @@ -9691,6 +9697,7 @@ static abi_long do_syscall1(void *cpu_env, int num, a= bi_long arg1, v5, v6)); } #else + /* mmap pointers are always untagged */ ret =3D get_errno(target_mmap(arg1, arg2, arg3, target_to_host_bitmask(arg4, mmap_flag= s_tbl), arg5, @@ -9709,8 +9716,10 @@ static abi_long do_syscall1(void *cpu_env, int num, = abi_long arg1, return get_errno(ret); #endif case TARGET_NR_munmap: + arg1 =3D cpu_untagged_addr(cpu, arg1); return get_errno(target_munmap(arg1, arg2)); case TARGET_NR_mprotect: + arg1 =3D cpu_untagged_addr(cpu, arg1); { TaskState *ts =3D cpu->opaque; /* Special hack to detect libc making the stack executable. */ @@ -9725,6 +9734,8 @@ static abi_long do_syscall1(void *cpu_env, int num, a= bi_long arg1, return get_errno(target_mprotect(arg1, arg2, arg3)); #ifdef TARGET_NR_mremap case TARGET_NR_mremap: + arg1 =3D cpu_untagged_addr(cpu, arg1); + /* mremap new_addr (arg5) is always untagged */ return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); #endif /* ??? msync/mlock/munlock are broken for softmmu. */ --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157192; cv=none; d=zohomail.com; s=zohoarc; b=TN1vb6tNEUSjeNDySk0WpLibqzOu5sctfa/P+5wMRlArZCFnu26oS9CygG5lSHZFSCKAB5zGRj9g3XHAioy9NZNc5yRojh0EgsAlC5He66ZOlLxGCb9XH6gyNLM6olkUnGelUxBenOWoWwUjdvW5ZAsBI5CLTwDuDykehWchfU8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157192; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ACfOE8SVSBgg4JpZZoxjcwYfYXJzG1xX3fS2kxeRIKY=; b=C/wz1UCN7CETbHlxQbv9Mgt8wzuFQiPv4G3pAIO/YDB3mQYezwonfRmLM5OVbI7IQzP1lvo/p7SOTkc35NEufG7DzqnlyqoXx/brsYcy4LbItMQx4zgYKCWOlNEpsG3U4ALjFupBgecZgpcF3d/bsFLQDJJhE5M9Q8Bv9poP1/Q= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157191740598.5108020742828; Fri, 12 Feb 2021 11:13:11 -0800 (PST) Received: from localhost ([::1]:32934 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdsK-0005Ju-4H for importer@patchew.org; Fri, 12 Feb 2021 14:13:08 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39546) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVX-0001my-O7 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:35 -0500 Received: from mail-pg1-x52a.google.com ([2607:f8b0:4864:20::52a]:45489) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVM-0007os-W9 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:35 -0500 Received: by mail-pg1-x52a.google.com with SMTP id o21so220206pgn.12 for ; Fri, 12 Feb 2021 10:49:24 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ACfOE8SVSBgg4JpZZoxjcwYfYXJzG1xX3fS2kxeRIKY=; b=mqpzC3VXtPsyNvOu96d9QAxow7rc8cCVYVdFUm7f8PC5uK+feQM8oOMxIt+kCgQmpi FqLVdNHGmsQAQM4cpndsvQTzyXL3+9dyXkNzysandX9P3TSmNuQMlpgTE5PZXIo1Wuuc oydzT5r8Zh902SE4GFgK0ph42F/qP0xNVZOl5F5FQOVw+UDb3wKkqJWILy+WwsrEVBb+ bLzy1OinMLvpQaZHBvPufDYT5Kdpvu5z0Y0yFlEUZHVgxHDdko/v2EaqKVU7woLig8Pk vQKi0VMaePrFMp9ZCMpg0Ct2dNsnEUCr4DF9q8TpVZA4osjAVjcLzI6XjzteUhbLi1OU cWIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ACfOE8SVSBgg4JpZZoxjcwYfYXJzG1xX3fS2kxeRIKY=; b=N4WCJFSgCg/+lvhw0hizyDrxMxPd3LKtLD+9JsIp9j2Z8omMeprZaNJ68V1PWhbvMy EOxkv/Do9qz4hEzAnaLK84H83xntSBjF472900hXXnuowBHDZppwN0jWZoghlsCnQq8m bSKpl3Tj6nUQvD2R3dJJHZ7VgoGo6UhTi8yRT6u2BzzAiP47iJfsS5w0qUkDkSMsliDo V4q7sgPAQOpbjOnBewLuSWq+XW2P99FCe7URWJnkH4jFL2FAQ3Oy01wPZSMeP4qCkYRp OO7PJTBsWrFVGlOWkDVkavncrcHk0KjlTvuI7EYIKqCWEQakFf/Zu3UUCU5uAwommMU8 +SSg== X-Gm-Message-State: AOAM530TW757Y/foecdf5O+2zt1EsRBrYso3sp0OEn57m2CF9GEDjn7A GH3nns4Ul2zsL3oEuBUZ1Bv2OnSSoRw7Ng== X-Google-Smtp-Source: ABdhPJydE8ReR37DxxImAdYUNdQjeDi0KUR5MOfTJ6MYVFkKSBgtxTxDAMxGtKlzIMJeK6FjdT8h7Q== X-Received: by 2002:a62:8c85:0:b029:1bd:5441:6cb8 with SMTP id m127-20020a628c850000b02901bd54416cb8mr4238386pfd.29.1613155762557; Fri, 12 Feb 2021 10:49:22 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 14/31] linux-user: Use guest_range_valid in access_ok Date: Fri, 12 Feb 2021 10:48:45 -0800 Message-Id: <20210212184902.1251044-15-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::52a; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" We're currently open-coding the range check in access_ok; use guest_range_valid when size !=3D 0. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/qemu.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 9fbc5edc4b..ba122a7903 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -493,12 +493,9 @@ extern unsigned long guest_stack_size; =20 static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) { - if (!guest_addr_valid(addr)) { - return false; - } - if (size !=3D 0 && - (addr + size - 1 < addr || - !guest_addr_valid(addr + size - 1))) { + if (size =3D=3D 0 + ? !guest_addr_valid(addr) + : !guest_range_valid(addr, size)) { return false; } return page_check_range((target_ulong)addr, size, type) =3D=3D 0; --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156105; cv=none; d=zohomail.com; s=zohoarc; b=R6d5olrZfxnJo5u9yWMUKjuNtpzjoKKyra0u3sX/hRo2oRG7ybw27qeG7BB3i/C//3wDzNox+6acqsgyTKNipLHPYinxZHacCnVnHjrfy/+Zxd+C68nZxqzc5PShnlNGUIy/PmL1HP50OhLfaJcdb1yWXmPiy89EqHVD4rLsJrw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156105; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=SxP9W+IJKMFMofn6Rk2ZUxJOKG7H541uVqle1Z/l9bY=; b=JrGtGE1DABK3fiYRwxdQPDm9saS2VurTwL7ybDMbx6yDaxtiXPLSqNe5ahXdKLHK/SkD1GdqNEmB2VSv3HH602Th3wR+63LxzZxV68vHD4JcA0OIM1DXKc3A5uAS/pq19kWIOoyDJM4rpleensOPRzq+bDBs/0hrDwChuOTCgIs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156105470990.7406843726488; Fri, 12 Feb 2021 10:55:05 -0800 (PST) Received: from localhost ([::1]:55484 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdam-0007IK-Nx for importer@patchew.org; Fri, 12 Feb 2021 13:55:01 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39480) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVU-0001gD-UF for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:32 -0500 Received: from mail-pl1-x62b.google.com ([2607:f8b0:4864:20::62b]:33643) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVM-0007oq-KC for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:32 -0500 Received: by mail-pl1-x62b.google.com with SMTP id d13so336954plg.0 for ; Fri, 12 Feb 2021 10:49:24 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=SxP9W+IJKMFMofn6Rk2ZUxJOKG7H541uVqle1Z/l9bY=; b=ecLUVEfp9AY8AF38nDNqMgHfT0Un9rUBrGoIohAHIxhAhCrE5/76SFX75trDKkT0y0 DjTnzMmJmeDQ5yZSKoKRBkw45vXUGzSDB9ZjJ3bM/1dnzN55ibe3TGBBoWFZUicPF9LY ZPFPi9+vX6VB9x5D1acrcq9F7ORcCFGoBcsAmHYMYUS4cTB7dlpaoWD8yQnjQoVc1phJ 7kNRBT2vTwFn2/5toKuuvE9z2x/de2iK3ajYCN1I7Np8b2HAu1QotyLhObvbQDK+B7l1 4y6QVUzGoj3kZvqGEWaWUvhztdX4c/i6QIKO+iLu0xTFDaUVBKxaMYy8GHqeFDp9fPwS pUjA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=SxP9W+IJKMFMofn6Rk2ZUxJOKG7H541uVqle1Z/l9bY=; b=QwiMasjFkvcbQ1/mtZdcCRhw6ZpfEXeRgbW/dxgwVlpic4Tfh0gK1U+NmyrMspoFVq y1Jl7Peih38TlpATiOFNyHwsAXlUNXY9O0SQ+c3eObqVThAXb1sQl8BjrDEd7aTX96dU 8f+VK7AT/2HZqe4SoZfFpgTKDqD+A2bpGKRcisskN64jpnQ/fnbrFGGPp586yfxxai2f /lnA+jxnZRBDO/FVEF61lH3vBvuNJKNoMm9G63mxfGpEdIHcJTSZ0HkLC64cfuoxGDZ8 Vb4AxsCH1MytDMANAupq30xG3QqD/xR5bb3GbmxOTGJrKpdudLsjui2W+6Ad4lze9mDi dbhw== X-Gm-Message-State: AOAM530fHH2t1MC7QQy4fwZBuZEeYAwPTUbML21uBHvxh2DRCpEdW/l9 +TIfU2VMqlCxFFewFfEr9xd29xdqCh0fbg== X-Google-Smtp-Source: ABdhPJzlxlbYzpdPf/HXTPv/4PR2bxKzt2/zMVMqOXDUjmjoQUeyI8xfKEI2g9voSp2bf3hXtntV/A== X-Received: by 2002:a17:902:309:b029:e1:536b:4ab with SMTP id 9-20020a1709020309b02900e1536b04abmr4064988pld.65.1613155763290; Fri, 12 Feb 2021 10:49:23 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 15/31] exec: Rename guest_{addr,range}_valid to *_untagged Date: Fri, 12 Feb 2021 10:48:46 -0800 Message-Id: <20210212184902.1251044-16-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62b; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" The places that use these are better off using untagged addresses, so do not provide a tagged versions. Rename to make it clear about the address type. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu_ldst.h | 4 ++-- linux-user/qemu.h | 4 ++-- accel/tcg/user-exec.c | 3 ++- linux-user/mmap.c | 12 ++++++------ linux-user/syscall.c | 2 +- 5 files changed, 13 insertions(+), 12 deletions(-) diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index c54069e3cd..ce6ce82618 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -87,12 +87,12 @@ static inline void *g2h(CPUState *cs, abi_ptr x) return g2h_untagged(cpu_untagged_addr(cs, x)); } =20 -static inline bool guest_addr_valid(abi_ulong x) +static inline bool guest_addr_valid_untagged(abi_ulong x) { return x <=3D GUEST_ADDR_MAX; } =20 -static inline bool guest_range_valid(abi_ulong start, abi_ulong len) +static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong l= en) { return len - 1 <=3D GUEST_ADDR_MAX && start <=3D GUEST_ADDR_MAX - len = + 1; } diff --git a/linux-user/qemu.h b/linux-user/qemu.h index ba122a7903..b3ccffbf0f 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -494,8 +494,8 @@ extern unsigned long guest_stack_size; static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) { if (size =3D=3D 0 - ? !guest_addr_valid(addr) - : !guest_range_valid(addr, size)) { + ? !guest_addr_valid_untagged(addr) + : !guest_range_valid_untagged(addr, size)) { return false; } return page_check_range((target_ulong)addr, size, type) =3D=3D 0; diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index fa1847b2a6..0d8cc27b21 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -213,7 +213,8 @@ static int probe_access_internal(CPUArchState *env, tar= get_ulong addr, g_assert_not_reached(); } =20 - if (!guest_addr_valid(addr) || page_check_range(addr, 1, flags) < 0) { + if (!guest_addr_valid_untagged(addr) || + page_check_range(addr, 1, flags) < 0) { if (nonfault) { return TLB_INVALID_MASK; } else { diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 088c50592c..6690384752 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -119,7 +119,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int= target_prot) } len =3D TARGET_PAGE_ALIGN(len); end =3D start + len; - if (!guest_range_valid(start, len)) { + if (!guest_range_valid_untagged(start, len)) { return -TARGET_ENOMEM; } if (len =3D=3D 0) { @@ -528,7 +528,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, in= t target_prot, * It can fail only on 64-bit host with 32-bit target. * On any other target/host host mmap() handles this error correct= ly. */ - if (end < start || !guest_range_valid(start, len)) { + if (end < start || !guest_range_valid_untagged(start, len)) { errno =3D ENOMEM; goto fail; } @@ -669,7 +669,7 @@ int target_munmap(abi_ulong start, abi_ulong len) if (start & ~TARGET_PAGE_MASK) return -TARGET_EINVAL; len =3D TARGET_PAGE_ALIGN(len); - if (len =3D=3D 0 || !guest_range_valid(start, len)) { + if (len =3D=3D 0 || !guest_range_valid_untagged(start, len)) { return -TARGET_EINVAL; } =20 @@ -727,9 +727,9 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong ol= d_size, int prot; void *host_addr; =20 - if (!guest_range_valid(old_addr, old_size) || + if (!guest_range_valid_untagged(old_addr, old_size) || ((flags & MREMAP_FIXED) && - !guest_range_valid(new_addr, new_size))) { + !guest_range_valid_untagged(new_addr, new_size))) { errno =3D ENOMEM; return -1; } @@ -777,7 +777,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong ol= d_size, =20 if (host_addr !=3D MAP_FAILED) { /* Check if address fits target address space */ - if (!guest_range_valid(h2g(host_addr), new_size)) { + if (!guest_range_valid_untagged(h2g(host_addr), new_size))= { /* Revert mremap() changes */ host_addr =3D mremap(g2h_untagged(old_addr), new_size, old_size, flags); diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 4451f8e4f0..30a5021509 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -4608,7 +4608,7 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_en= v, return -TARGET_EINVAL; } } - if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) { + if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) { return -TARGET_EINVAL; } =20 --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dS8ZnOshKJTWxglNrhrN5+PeQHaP6QIVapKYl4oypmA=; b=YYL50dSquZH3FnzErJEydQa3FLPcjekbVaS99qoXRBxIpavdNWq30qcndjWg9IFBQG JlLRxWDjrT4G0laReFX0u9N/q24usE2UE0B08bT4+DbfWhhWDfq6Hp7ST7QVXnx3J5V8 J+HZbsUxlzzkz/dsdFVqgryXGBXbDFXEiZhWhn14v2vsb77Oo3fHtdisRrhnexMyqDQH X6ZpqJO5oSTabqcBSQL3PP2Ou6BXwl8maVbSJDxls3LzGuED1k60Mf4hiFDxKpBD0jdS ebzZIGRlqefuOInHnrzSufesRyEYTwsbz7blVeV4OEIYYph15qV79FNlInrAvKWHQwpf 22dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dS8ZnOshKJTWxglNrhrN5+PeQHaP6QIVapKYl4oypmA=; b=Lz4vxNrQnZ5vZLzMmiZ37YsVkvu2TSQUyWcMSVFCu2hzQ1L4Uk+jzRq6RX3NKlHPMf Sfxq0OyO+9ZR9kT7sY2XSLH7Bhj1UC0K+Psw1FgICova+QMBYC5RORxYZYRlnhvQb0W0 /0pvPCDBXFbWThMdq5n1CE6w/vfEu+4MQVuFTB1LWCwwIzteIw7MY8eJqYvRGIjEnCSt dPnDLlstutVfCf7jkdKATRQhSKj2JhlYCcUw+6e8GnG2/1gEzi2WFHz+SiLDbj/heAk+ UTV0NmfGkKCird8QACoW/eBb6g4s8hwecrouK6XReDeKDJA8JYqv2WI81nIUrjY73xEO ydtg== X-Gm-Message-State: AOAM531cIAkBeNVe2iZ3GUUL6dc/vXws8z5Z8ZGSHjQGOZE9OMn52gYw Rec89qWTs2/aq6llu78PplsUNPLAWQJNtQ== X-Google-Smtp-Source: ABdhPJzMvLGem9SGCP+4woKeD1ya2salhBNPoAUgLDxJ77eGxAL1ZM1BwUL1Nf4Q8FpoL82e5UASwA== X-Received: by 2002:a05:6a00:22d1:b029:1b4:9bb5:724c with SMTP id f17-20020a056a0022d1b02901b49bb5724cmr4126381pfj.63.1613155764237; Fri, 12 Feb 2021 10:49:24 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 16/31] linux-user: Use cpu_untagged_addr in access_ok; split out *_untagged Date: Fri, 12 Feb 2021 10:48:47 -0800 Message-Id: <20210212184902.1251044-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42a; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Provide both tagged and untagged versions of access_ok. In a few places use thread_cpu, as the user is several callees removed from do_syscall1. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/qemu.h | 11 +++++++++-- linux-user/elfload.c | 2 +- linux-user/hppa/cpu_loop.c | 8 ++++---- linux-user/i386/cpu_loop.c | 2 +- linux-user/i386/signal.c | 5 +++-- linux-user/syscall.c | 9 ++++++--- 6 files changed, 24 insertions(+), 13 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index b3ccffbf0f..82eabb73f8 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -491,7 +491,7 @@ extern unsigned long guest_stack_size; #define VERIFY_READ PAGE_READ #define VERIFY_WRITE (PAGE_READ | PAGE_WRITE) =20 -static inline bool access_ok(int type, abi_ulong addr, abi_ulong size) +static inline bool access_ok_untagged(int type, abi_ulong addr, abi_ulong = size) { if (size =3D=3D 0 ? !guest_addr_valid_untagged(addr) @@ -501,6 +501,12 @@ static inline bool access_ok(int type, abi_ulong addr,= abi_ulong size) return page_check_range((target_ulong)addr, size, type) =3D=3D 0; } =20 +static inline bool access_ok(CPUState *cpu, int type, + abi_ulong addr, abi_ulong size) +{ + return access_ok_untagged(type, cpu_untagged_addr(cpu, addr), size); +} + /* NOTE __get_user and __put_user use host pointers and don't check access. These are usually used to access struct data members once the struct has been locked - usually with lock_user_struct. */ @@ -636,8 +642,9 @@ abi_long copy_to_user(abi_ulong gaddr, void *hptr, size= _t len); host area will have the same contents as the guest. */ static inline void *lock_user(int type, abi_ulong guest_addr, long len, in= t copy) { - if (!access_ok(type, guest_addr, len)) + if (!access_ok_untagged(type, guest_addr, len)) { return NULL; + } #ifdef DEBUG_REMAP { void *addr; diff --git a/linux-user/elfload.c b/linux-user/elfload.c index f542841ba2..e7209e03cb 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -3500,7 +3500,7 @@ static int vma_get_mapping_count(const struct mm_stru= ct *mm) static abi_ulong vma_dump_size(const struct vm_area_struct *vma) { /* if we cannot even read the first page, skip it */ - if (!access_ok(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE)) + if (!access_ok_untagged(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE)) return (0); =20 /* diff --git a/linux-user/hppa/cpu_loop.c b/linux-user/hppa/cpu_loop.c index 944511bbe4..3aaaf3337c 100644 --- a/linux-user/hppa/cpu_loop.c +++ b/linux-user/hppa/cpu_loop.c @@ -35,7 +35,7 @@ static abi_ulong hppa_lws(CPUHPPAState *env) return -TARGET_ENOSYS; =20 case 0: /* elf32 atomic 32bit cmpxchg */ - if ((addr & 3) || !access_ok(VERIFY_WRITE, addr, 4)) { + if ((addr & 3) || !access_ok(cs, VERIFY_WRITE, addr, 4)) { return -TARGET_EFAULT; } old =3D tswap32(old); @@ -50,9 +50,9 @@ static abi_ulong hppa_lws(CPUHPPAState *env) return -TARGET_ENOSYS; } if (((addr | old | new) & ((1 << size) - 1)) - || !access_ok(VERIFY_WRITE, addr, 1 << size) - || !access_ok(VERIFY_READ, old, 1 << size) - || !access_ok(VERIFY_READ, new, 1 << size)) { + || !access_ok(cs, VERIFY_WRITE, addr, 1 << size) + || !access_ok(cs, VERIFY_READ, old, 1 << size) + || !access_ok(cs, VERIFY_READ, new, 1 << size)) { return -TARGET_EFAULT; } /* Note that below we use host-endian loads so that the cmpxchg diff --git a/linux-user/i386/cpu_loop.c b/linux-user/i386/cpu_loop.c index 19c8a18cd3..f813e87294 100644 --- a/linux-user/i386/cpu_loop.c +++ b/linux-user/i386/cpu_loop.c @@ -99,7 +99,7 @@ static bool write_ok_or_segv(CPUX86State *env, abi_ptr ad= dr, size_t len) * For all the vsyscalls, NULL means "don't write anything" not * "write it at address 0". */ - if (addr =3D=3D 0 || access_ok(VERIFY_WRITE, addr, len)) { + if (addr =3D=3D 0 || access_ok(env_cpu(env), VERIFY_WRITE, addr, len))= { return true; } =20 diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 97a39204cc..9320e1d472 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -513,9 +513,10 @@ restore_sigcontext(CPUX86State *env, struct target_sig= context *sc) =20 fpstate_addr =3D tswapl(sc->fpstate); if (fpstate_addr !=3D 0) { - if (!access_ok(VERIFY_READ, fpstate_addr, - sizeof(struct target_fpstate))) + if (!access_ok(env_cpu(env), VERIFY_READ, fpstate_addr, + sizeof(struct target_fpstate))) { goto badframe; + } #ifndef TARGET_X86_64 cpu_x86_frstor(env, fpstate_addr, 1); #else diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 30a5021509..24fc1daf02 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -3515,8 +3515,9 @@ static abi_long do_accept4(int fd, abi_ulong target_a= ddr, return -TARGET_EINVAL; } =20 - if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) + if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { return -TARGET_EFAULT; + } =20 addr =3D alloca(addrlen); =20 @@ -3546,8 +3547,9 @@ static abi_long do_getpeername(int fd, abi_ulong targ= et_addr, return -TARGET_EINVAL; } =20 - if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) + if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { return -TARGET_EFAULT; + } =20 addr =3D alloca(addrlen); =20 @@ -3577,8 +3579,9 @@ static abi_long do_getsockname(int fd, abi_ulong targ= et_addr, return -TARGET_EINVAL; } =20 - if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) + if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) { return -TARGET_EFAULT; + } =20 addr =3D alloca(addrlen); =20 --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157200; cv=none; d=zohomail.com; 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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ch6p0n2lq/t8EpS2QR/TzUItBZtqRgmNxCQ2fBsn7Kg=; b=J8Vy1Pgq6mnzhXkriN8kz+WDoUwbEzT7beUh165ZlTLDQOaHvibR/UpTRW4j1W0fXy oovTTuaj7I/8RLq8NBgUXNCxiJKeMWRgTtR0PYJC0G39DIjrC0daVkCdkCMSDVdk5F1U WWfncKdivSqLcYoB3v8gR6rDtE609JKMvHIDZYj+iUNnXx/SVwCawZTETBDOBTY92RpK A7/jiNkF3HdZJJeARD0DHpsJzVIIyFleOdJpQ/et2CteR9TCzS2EnZSF0GvTz66J82tB rhKT+SrLgx8cXlpaweeW82xYtxrmd4OTKLqZk+XNCCslwd4MQmPX9u0ZU+9zUe9DVlL9 jXPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ch6p0n2lq/t8EpS2QR/TzUItBZtqRgmNxCQ2fBsn7Kg=; b=rA3g7Lwnv/8HescpXSGYac8GN1rW7URIr6zE/ag+/+e7oBBu3U1Ub8ztLtNXk0A88z iOHuT0By4xLDwEuyQNR0AtKgkkNcw993w43ZkB8iODLR5Vt6gD/K7zqzH7GqFD+hueKn BzalgoQFsQ0r8hZUGg68QpQrWiwRM8R8OTY2itW7ndwcebRhD2qDr3zoRBiM0ewIxBvy Wd0wCmzOY2UuehLf5nxZPSCWhH21eo7ye+SKPzMPXscjJj68znYGCvc6whL8qKu8uKfU mZ4z6UHgfGfJs0V8Z3D7b4eg3LxC2+2tUmwYrWnRAla06KFt04VeKPFAIbdCp+FgoJW1 ToOQ== X-Gm-Message-State: AOAM532P6FWgXASSGOnXdOQTeLA742d4qPE7exsBAoY+FEtRDS0zDcET cD2eRpmPGBQsZCYtNkXt+57AGGkZ5YPjDQ== X-Google-Smtp-Source: ABdhPJzlEfY8ZQwzS3cfQq6xLjKfDbKgy3PeUvmrxu9rtf+os5j2U6exH/HyWAfXtUuedzSAOUa7Dg== X-Received: by 2002:a17:90b:a58:: with SMTP id gw24mr3963764pjb.143.1613155765248; Fri, 12 Feb 2021 10:49:25 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 17/31] linux-user: Move lock_user et al out of line Date: Fri, 12 Feb 2021 10:48:48 -0800 Message-Id: <20210212184902.1251044-18-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x630.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" These functions are not small, except for unlock_user without debugging enabled. Move them out of line, and add missing braces on the way. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- linux-user/qemu.h | 45 ++++++------------------------------------- linux-user/uaccess.c | 46 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+), 39 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 82eabb73f8..36b58bd840 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -640,57 +640,24 @@ abi_long copy_to_user(abi_ulong gaddr, void *hptr, si= ze_t len); =20 /* Lock an area of guest memory into the host. If copy is true then the host area will have the same contents as the guest. */ -static inline void *lock_user(int type, abi_ulong guest_addr, long len, in= t copy) -{ - if (!access_ok_untagged(type, guest_addr, len)) { - return NULL; - } -#ifdef DEBUG_REMAP - { - void *addr; - addr =3D g_malloc(len); - if (copy) - memcpy(addr, g2h(guest_addr), len); - else - memset(addr, 0, len); - return addr; - } -#else - return g2h_untagged(guest_addr); -#endif -} +void *lock_user(int type, abi_ulong guest_addr, long len, int copy); =20 /* Unlock an area of guest memory. The first LEN bytes must be flushed back to guest memory. host_ptr =3D NULL is explicitly allowed and does nothing. */ -static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, - long len) -{ - #ifdef DEBUG_REMAP - if (!host_ptr) - return; - if (host_ptr =3D=3D g2h_untagged(guest_addr)) - return; - if (len > 0) - memcpy(g2h_untagged(guest_addr), host_ptr, len); - g_free(host_ptr); +static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, long = len) +{ } +#else +void unlock_user(void *host_ptr, abi_ulong guest_addr, long len); #endif -} =20 /* Return the length of a string in target memory or -TARGET_EFAULT if access error. */ abi_long target_strlen(abi_ulong gaddr); =20 /* Like lock_user but for null terminated strings. */ -static inline void *lock_user_string(abi_ulong guest_addr) -{ - abi_long len; - len =3D target_strlen(guest_addr); - if (len < 0) - return NULL; - return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); -} +void *lock_user_string(abi_ulong guest_addr); =20 /* Helper macros for locking/unlocking a target struct. */ #define lock_user_struct(type, host_ptr, guest_addr, copy) \ diff --git a/linux-user/uaccess.c b/linux-user/uaccess.c index e215ecc2a6..bba012ed15 100644 --- a/linux-user/uaccess.c +++ b/linux-user/uaccess.c @@ -4,6 +4,52 @@ =20 #include "qemu.h" =20 +void *lock_user(int type, abi_ulong guest_addr, long len, int copy) +{ + if (!access_ok_untagged(type, guest_addr, len)) { + return NULL; + } +#ifdef DEBUG_REMAP + { + void *addr; + addr =3D g_malloc(len); + if (copy) { + memcpy(addr, g2h(guest_addr), len); + } else { + memset(addr, 0, len); + } + return addr; + } +#else + return g2h_untagged(guest_addr); +#endif +} + +#ifdef DEBUG_REMAP +void unlock_user(void *host_ptr, abi_ulong guest_addr, long len); +{ + if (!host_ptr) { + return; + } + if (host_ptr =3D=3D g2h_untagged(guest_addr)) { + return; + } + if (len > 0) { + memcpy(g2h_untagged(guest_addr), host_ptr, len); + } + g_free(host_ptr); +} +#endif + +void *lock_user_string(abi_ulong guest_addr) +{ + abi_long len =3D target_strlen(guest_addr); + if (len < 0) { + return NULL; + } + return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); +} + /* copy_from_user() and copy_to_user() are usually used to copy data * buffers between the target and host. These internally perform * locking/unlocking of the memory. --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157817; cv=none; d=zohomail.com; s=zohoarc; b=UnU5Y0N7WW/BqpHDWB/AjByIzI+KlAvrh0ykUUUVNYHNzNJ3+ocDggxgt/cuhlWshaw9Nst0+D1PjRagKlzDvLvMIbYEDswQQGXufGnCiQjbYaqEDTixQYMRFbTfMpLl1NfTEC26XwgwoXpCdvnrJyxAJWMfvasA/U9oP+QtzoI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157817; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=rmu2PU4rJNhYRjC32Fq6chUgbDJkHTIm3xnv7XFmDE4=; b=CUbeGJXcq5KsPqKF82LRSKY4l/yeCXz/ua+qbRhg5WM0O4XRCqws+mwYeRgkZVK1u3TbyM9sd7DHrsbLmfigNtxyMUL+R2UXjAUc21OMbYHekXSZRbtm+JAOeZuxEwao3BE/1oHDFEQ5cdEXkMBntCRsV2O/FG4pPJN5NphrVzk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157816622875.8139002717917; Fri, 12 Feb 2021 11:23:36 -0800 (PST) Received: from localhost ([::1]:54162 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAe2C-0001bH-U0 for importer@patchew.org; Fri, 12 Feb 2021 14:23:20 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39566) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVY-0001oF-Fz for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:36 -0500 Received: from mail-pg1-x531.google.com ([2607:f8b0:4864:20::531]:39053) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVT-0007q9-FT for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:36 -0500 Received: by mail-pg1-x531.google.com with SMTP id o63so245561pgo.6 for ; Fri, 12 Feb 2021 10:49:27 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rmu2PU4rJNhYRjC32Fq6chUgbDJkHTIm3xnv7XFmDE4=; b=zSJXWIQaXGfP5Qck+HSWS4lMOHNwAZ8McYIMM+fNo2TxDMxKSY3h2ILRjmNZ/snR// 9MQaGCLCnUDjnyrXBbHzKetHnDZFCgXRgZ1ibXtt3uvEAPTi5YIZVkZMtLQLYEThke7T Oo+2aGIRzuv+UgHaSxwN+h/mQC0iKkd8fWRd1vB9LEa2h8kn5ItPGcp3HsZZMCrRv6AW iknUvVztbI1ADXbyz+IK15/fOo7wIU0OUv44bimQVUJM5TUJ1fOm6ZojQLgzWxHoKAzr gcKnfU4kT6Qk304kkWG8QCDV0I+vfQ3r6bDXUJ3m+5hwuYdHVcjP+CaaqIpqFjm53ttk E0iQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=rmu2PU4rJNhYRjC32Fq6chUgbDJkHTIm3xnv7XFmDE4=; b=qqhV5lYwVQ5tL6hLNkjV7zo/bJrp9hn11eViWBqEDJ/hhWVfOFBNAZ54TH8IYgDLkh buOOBq6VYITmvxg7no6m1TpZZz/NMkjmNLMWNcox5Il1nyR+Xp5oSfGoDpCZC5JfgCXS 46XwnvcgHRquQW6G2TKeLi2Bnzx5UxAv5PNEuLJ7FaZkrEpzgSGdysH6bfCklCwmjfEO tIA8MqWF+fQIWpsAUocbAoFEeiGvgQsqiJfXWrBlYZYmLjp0IP4WV1hmtf702o/VBIea eY/C2OLPGaATrnwSrcAfyx4SOT9/2xFNmqV/h114N03IC3Ux7T30A2AltThjjSbB69bu lAFA== X-Gm-Message-State: AOAM531ntm1KGrRSxpHbwQy/x8O7i0TVrPNzIduTP7WkbDMrl773uMs/ H5OdMCKT/hTly/I2SsXrGNuNH9IOOj917g== X-Google-Smtp-Source: ABdhPJwNwarMlzdSu85LqRcI0cCgUHFOktbKuViYUnoRBheHRvQgzeID5AjM+S9zGDKt9/H4EoBWNQ== X-Received: by 2002:a62:fb0b:0:b029:1d8:fdca:60f2 with SMTP id x11-20020a62fb0b0000b02901d8fdca60f2mr4039312pfm.70.1613155766234; Fri, 12 Feb 2021 10:49:26 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 18/31] linux-user: Fix types in uaccess.c Date: Fri, 12 Feb 2021 10:48:49 -0800 Message-Id: <20210212184902.1251044-19-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::531; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x531.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" For copy_*_user, only 0 and -TARGET_EFAULT are returned; no need to involve abi_long. Use size_t for lengths. Use bool for the lock_user copy argument. Use ssize_t for target_strlen, because we can't overflow the host memory space. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- linux-user/qemu.h | 14 ++++++-------- linux-user/uaccess.c | 45 ++++++++++++++++++++++---------------------- 2 files changed, 29 insertions(+), 30 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 36b58bd840..d25a5dafc0 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -7,8 +7,6 @@ #include "exec/cpu_ldst.h" =20 #undef DEBUG_REMAP -#ifdef DEBUG_REMAP -#endif /* DEBUG_REMAP */ =20 #include "exec/user/abitypes.h" =20 @@ -629,8 +627,8 @@ static inline bool access_ok(CPUState *cpu, int type, * buffers between the target and host. These internally perform * locking/unlocking of the memory. */ -abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); -abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); +int copy_from_user(void *hptr, abi_ulong gaddr, size_t len); +int copy_to_user(abi_ulong gaddr, void *hptr, size_t len); =20 /* Functions for accessing guest memory. The tget and tput functions read/write single values, byteswapping as necessary. The lock_user fun= ction @@ -640,13 +638,13 @@ abi_long copy_to_user(abi_ulong gaddr, void *hptr, si= ze_t len); =20 /* Lock an area of guest memory into the host. If copy is true then the host area will have the same contents as the guest. */ -void *lock_user(int type, abi_ulong guest_addr, long len, int copy); +void *lock_user(int type, abi_ulong guest_addr, size_t len, bool copy); =20 /* Unlock an area of guest memory. The first LEN bytes must be flushed back to guest memory. host_ptr =3D NULL is explicitly allowed and does nothing. */ -#ifdef DEBUG_REMAP -static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, long = len) +#ifndef DEBUG_REMAP +static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, size_= t len) { } #else void unlock_user(void *host_ptr, abi_ulong guest_addr, long len); @@ -654,7 +652,7 @@ void unlock_user(void *host_ptr, abi_ulong guest_addr, = long len); =20 /* Return the length of a string in target memory or -TARGET_EFAULT if access error. */ -abi_long target_strlen(abi_ulong gaddr); +ssize_t target_strlen(abi_ulong gaddr); =20 /* Like lock_user but for null terminated strings. */ void *lock_user_string(abi_ulong guest_addr); diff --git a/linux-user/uaccess.c b/linux-user/uaccess.c index bba012ed15..76af6a92b1 100644 --- a/linux-user/uaccess.c +++ b/linux-user/uaccess.c @@ -4,7 +4,7 @@ =20 #include "qemu.h" =20 -void *lock_user(int type, abi_ulong guest_addr, long len, int copy) +void *lock_user(int type, abi_ulong guest_addr, size_t len, bool copy) { if (!access_ok_untagged(type, guest_addr, len)) { return NULL; @@ -26,7 +26,7 @@ void *lock_user(int type, abi_ulong guest_addr, long len,= int copy) } =20 #ifdef DEBUG_REMAP -void unlock_user(void *host_ptr, abi_ulong guest_addr, long len); +void unlock_user(void *host_ptr, abi_ulong guest_addr, size_t len); { if (!host_ptr) { return; @@ -34,7 +34,7 @@ void unlock_user(void *host_ptr, abi_ulong guest_addr, lo= ng len); if (host_ptr =3D=3D g2h_untagged(guest_addr)) { return; } - if (len > 0) { + if (len !=3D 0) { memcpy(g2h_untagged(guest_addr), host_ptr, len); } g_free(host_ptr); @@ -43,53 +43,53 @@ void unlock_user(void *host_ptr, abi_ulong guest_addr, = long len); =20 void *lock_user_string(abi_ulong guest_addr) { - abi_long len =3D target_strlen(guest_addr); + ssize_t len =3D target_strlen(guest_addr); if (len < 0) { return NULL; } - return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); + return lock_user(VERIFY_READ, guest_addr, (size_t)len + 1, 1); } =20 /* copy_from_user() and copy_to_user() are usually used to copy data * buffers between the target and host. These internally perform * locking/unlocking of the memory. */ -abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len) +int copy_from_user(void *hptr, abi_ulong gaddr, size_t len) { - abi_long ret =3D 0; - void *ghptr; + int ret =3D 0; + void *ghptr =3D lock_user(VERIFY_READ, gaddr, len, 1); =20 - if ((ghptr =3D lock_user(VERIFY_READ, gaddr, len, 1))) { + if (ghptr) { memcpy(hptr, ghptr, len); unlock_user(ghptr, gaddr, 0); - } else + } else { ret =3D -TARGET_EFAULT; - + } return ret; } =20 - -abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len) +int copy_to_user(abi_ulong gaddr, void *hptr, size_t len) { - abi_long ret =3D 0; - void *ghptr; + int ret =3D 0; + void *ghptr =3D lock_user(VERIFY_WRITE, gaddr, len, 0); =20 - if ((ghptr =3D lock_user(VERIFY_WRITE, gaddr, len, 0))) { + if (ghptr) { memcpy(ghptr, hptr, len); unlock_user(ghptr, gaddr, len); - } else + } else { ret =3D -TARGET_EFAULT; + } =20 return ret; } =20 /* Return the length of a string in target memory or -TARGET_EFAULT if access error */ -abi_long target_strlen(abi_ulong guest_addr1) +ssize_t target_strlen(abi_ulong guest_addr1) { uint8_t *ptr; abi_ulong guest_addr; - int max_len, len; + size_t max_len, len; =20 guest_addr =3D guest_addr1; for(;;) { @@ -101,11 +101,12 @@ abi_long target_strlen(abi_ulong guest_addr1) unlock_user(ptr, guest_addr, 0); guest_addr +=3D len; /* we don't allow wrapping or integer overflow */ - if (guest_addr =3D=3D 0 ||=20 - (guest_addr - guest_addr1) > 0x7fffffff) + if (guest_addr =3D=3D 0 || (guest_addr - guest_addr1) > 0x7fffffff= ) { return -TARGET_EFAULT; - if (len !=3D max_len) + } + if (len !=3D max_len) { break; + } } return guest_addr - guest_addr1; } --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613158145; cv=none; d=zohomail.com; s=zohoarc; b=R2dgivdtDIrx4vKJ12OBaGoLbT5Y9VdQZAeqJIEyQx9I0CziJvDcLHSzNRBazHqYUPAGRmQ7rPvltKuaOywW15OOfC1sOvPJcgwZWFP0n2U15C11k7j0JzRhY3LJIFlPGUTrZPOrl3cSWw3aZ/F2jgRuY8FOMECeKzPA9wTdIrM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613158145; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=33PuANLFLZBScZnb9Hs9Trfm1Tvhd5OuXkKzdpb7J3o=; b=KFEpnu07SkcCy2W3/LGeqj4WFqLOinZcP8yX5bJYjyBd13akJNXBfX0nna6qtnXCLUW9TDctOVlNSOnOaD8c30zK0MNdojzV4tGvOVIUQYm9hZ75NL6pVmI7T4K8DormnvdL/yC2BMcOeVhoNUdIeivNyIEKZVt2lO+0oThPGjs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613158145396444.5064288959245; Fri, 12 Feb 2021 11:29:05 -0800 (PST) Received: from localhost ([::1]:41318 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAe7j-0001ei-GW for importer@patchew.org; Fri, 12 Feb 2021 14:29:03 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39624) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVb-0001uz-Hj for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:39 -0500 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]:35005) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVT-0007qS-HM for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:39 -0500 Received: by mail-pl1-x631.google.com with SMTP id g20so332978plo.2 for ; Fri, 12 Feb 2021 10:49:30 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=33PuANLFLZBScZnb9Hs9Trfm1Tvhd5OuXkKzdpb7J3o=; b=MRaZru/gnVeP0yh991zSqCuHrSY4PDzKRFbgu2CbzDAE2hT3c1cHnlWGd+pjkRojiQ bqrz2gzqoD7cShYRtOidiAtvBwQAYBmxZSjmxRihnx3S4ox/vBKqylPVJ6RNoQBf/VE2 x5ArSjJCRH0mpB2OMejWf0g3zWWWJvER6j4zCH2ok1fS76PZvTxAHfjIzJCcX/vwlu6M VVf3h0GBxQhYN68m6d9Qn1QCwIzcuO/deSnflVIBcGLRPEi5d5UXxtQA4DmGV/nlZ2Mm nfFGqhba4UHpb39JMi0tfvOQIfHkx7PAwwkuxBuz+8p0Oc8D20EX7Y2rTgblnh8ROPBe 8Qxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=33PuANLFLZBScZnb9Hs9Trfm1Tvhd5OuXkKzdpb7J3o=; b=DhzypTby9nsgeCTuUpJdg/mzwCrDFfcf0dtoqpWx+jWaD1lGhbcKfSTxIkjGfBYzzY Zlju5NbPeeta4VPya5ZNzs2wSusSFBKt2q8NnV0C+QrkN9DQHKQ0lx6I/bQw2XBpQNqv moZWTfyijO1Mvlatse3BgjwEptRmFAx68Y5h2aNnOs02Gu3DQxwreWvrWef0iCCvrITN k61uGMvWqLI8bWfgvDU/ORkU6FZyocwpq9xVCvHvorddk3mwIIButiaUGnku+yjRNdR3 Qv/9MhumFIe9tLedTjSLUIyskowFbuiCG88rRcn+r+bgefvSwwMi88Kgkfgw4Yx2ATcp sQ0A== X-Gm-Message-State: AOAM53202Bqwf7iZORQaLcJS9VJQnG9a6l2WIRLmyNT0F6W5dbxxjsu2 5MfjxCSvFsPom4LI5UNP4oYJPsQtHeM0eA== X-Google-Smtp-Source: ABdhPJwpQVhxjLPKPluF6YYkBzTSLuYuPrxLwG/1ZNJWq3BpkQbpYijqiA82P8MoPGpFQMkZM3gysw== X-Received: by 2002:a17:90a:2f21:: with SMTP id s30mr3839164pjd.5.1613155767288; Fri, 12 Feb 2021 10:49:27 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 19/31] linux-user: Handle tags in lock_user/unlock_user Date: Fri, 12 Feb 2021 10:48:50 -0800 Message-Id: <20210212184902.1251044-20-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::631; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x631.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Resolve the untagged address once, using thread_cpu. Tidy the DEBUG_REMAP code using glib routines. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/uaccess.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/linux-user/uaccess.c b/linux-user/uaccess.c index 76af6a92b1..c696913016 100644 --- a/linux-user/uaccess.c +++ b/linux-user/uaccess.c @@ -6,36 +6,37 @@ =20 void *lock_user(int type, abi_ulong guest_addr, size_t len, bool copy) { + void *host_addr; + + guest_addr =3D cpu_untagged_addr(thread_cpu, guest_addr); if (!access_ok_untagged(type, guest_addr, len)) { return NULL; } + host_addr =3D g2h_untagged(guest_addr); #ifdef DEBUG_REMAP - { - void *addr; - addr =3D g_malloc(len); - if (copy) { - memcpy(addr, g2h(guest_addr), len); - } else { - memset(addr, 0, len); - } - return addr; + if (copy) { + host_addr =3D g_memdup(host_addr, len); + } else { + host_addr =3D g_malloc0(len); } -#else - return g2h_untagged(guest_addr); #endif + return host_addr; } =20 #ifdef DEBUG_REMAP void unlock_user(void *host_ptr, abi_ulong guest_addr, size_t len); { + void *host_ptr_conv; + if (!host_ptr) { return; } - if (host_ptr =3D=3D g2h_untagged(guest_addr)) { + host_ptr_conv =3D g2h(thread_cpu, guest_addr); + if (host_ptr =3D=3D host_ptr_conv) { return; } if (len !=3D 0) { - memcpy(g2h_untagged(guest_addr), host_ptr, len); + memcpy(host_ptr_conv, host_ptr, len); } g_free(host_ptr); } --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157501; cv=none; d=zohomail.com; s=zohoarc; b=PeaW3txH+utHoPjNJ+WKC5eEtjymTA9WFfyRqFwJ0ayK7sxOINQeHABm30OIZubNoSYL/jJsJe4jEZ160hYZrmeg8cSKQzbBzPlNsBpPfCHhlwZtVYM8cbWXarhMBe3CSjvhJ5aOpJViULL5aF7uaO1wT2rjZBMb9iIGsURB2JU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157501; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ii8KjL9vsZV9U86ikUpsidwXGfwtzhRNG8B9htIsBiQ=; b=WNRxu3AxUd9IrtcxLehNZV5D0hrPD2LM12YevVLPjBVXBs27gFltoByWQIi6ONC6a2PD1LWfcaX9mceA7Nb1tQLp9KumItXb7UlO1l1dZo9CX45Z3pI/M6T/01bu/30ZsAMhYxg/Q99rUpe4lOCmgTNJ8l5zuQP0P0Iqt/SM+MQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157500576963.6232017626608; Fri, 12 Feb 2021 11:18:20 -0800 (PST) Received: from localhost ([::1]:41210 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdxJ-0000sU-Tf for importer@patchew.org; Fri, 12 Feb 2021 14:18:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39580) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVZ-0001qt-PS for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:37 -0500 Received: from mail-pj1-x102b.google.com ([2607:f8b0:4864:20::102b]:53204) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVT-0007qW-HX for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:37 -0500 Received: by mail-pj1-x102b.google.com with SMTP id q72so138731pjq.2 for ; Fri, 12 Feb 2021 10:49:30 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ii8KjL9vsZV9U86ikUpsidwXGfwtzhRNG8B9htIsBiQ=; b=KDlahd2DJXyQmvNadL21lLzxUJC/yFxcR0qhsvvmzXGd9jj72UcwYWl03c+OHJKCAf em8nzUaPrQHsFN1pLkt+GnT3pZgDAfDb1d0EjGr7Xhav+Wp6/weV1TlcCxI66x9h0Nmj MS/y/COnu+iA5shpy+gmcVZhrt7gpsWoxlizezBjaTZZOyrQQM46vFL1cTc3Mr3VgBPJ cKB9zc0HyOCLhRDRlqF+qV90mx8TJhMxoQ+H/w/EOzyXIKndun8R9D8ECMqn01NVbhSO 7fdgFwxnY7+7/m7CrpJDr34KeGFNEHA0yG2QhRVJyuZm5gxyMuZAzE1OlB7bCAY+C5PH Rf8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ii8KjL9vsZV9U86ikUpsidwXGfwtzhRNG8B9htIsBiQ=; b=X4vJSml6y7z9MtIc8BOy+aKU9mvt1DDCcXnq+dCEE04JXELOanW9U0zIkaXp5E3ry9 2eaqvj9HW98jXVHXoJ3rNUCzdiW7f9kyVvBsKBBVmB0ovR6XMRwPCKigDVwKGo5GkiKd i2xJmTT+vSHy/x0z3rb/fM7IQyXUXq2mY0jLjsRhsGbQtZ/plJWTnMi6U1v7W+LTGxpJ orD82Ca1GNyyTmDrf/NmLl/gpw6VgWSPiS53/Om1/1B6n+XeoT3PasOb3aoivuKjCG5l v4Xj82lJqTSgQibaZ7FD1q1gcsIrfDfkox08YEtMqkBEOSbo+HMD8qNUnIWLs8ruzeKO 7bSA== X-Gm-Message-State: AOAM533Tm5jGXt3vdfb25T1hTsArgatKAc9H9hPpyN4Juy1NArcIQHe6 kdhW/pIT8SdHhM0Fpi95TF1ml9obK/Tz5w== X-Google-Smtp-Source: ABdhPJw12HmIV6C/9XDhqF0NnUgCq7C3QQRPh5MI89nsVeYFeldFgMe+h6FPqwuQG5zshqAkaGOguA== X-Received: by 2002:a17:902:9b91:b029:e3:2c9e:f511 with SMTP id y17-20020a1709029b91b02900e32c9ef511mr1451415plp.74.1613155770121; Fri, 12 Feb 2021 10:49:30 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 20/31] linux-user/aarch64: Implement PR_TAGGED_ADDR_ENABLE Date: Fri, 12 Feb 2021 10:48:51 -0800 Message-Id: <20210212184902.1251044-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102b; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" This is the prctl bit that controls whether syscalls accept tagged addresses. See Documentation/arm64/tagged-address-abi.rst in the linux kernel. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/aarch64/target_syscall.h | 4 ++++ target/arm/cpu-param.h | 3 +++ target/arm/cpu.h | 31 +++++++++++++++++++++++++++++ linux-user/syscall.c | 24 ++++++++++++++++++++++ 4 files changed, 62 insertions(+) diff --git a/linux-user/aarch64/target_syscall.h b/linux-user/aarch64/targe= t_syscall.h index 3194e6b009..820601dfcc 100644 --- a/linux-user/aarch64/target_syscall.h +++ b/linux-user/aarch64/target_syscall.h @@ -30,4 +30,8 @@ struct target_pt_regs { # define TARGET_PR_PAC_APDBKEY (1 << 3) # define TARGET_PR_PAC_APGAKEY (1 << 4) =20 +#define TARGET_PR_SET_TAGGED_ADDR_CTRL 55 +#define TARGET_PR_GET_TAGGED_ADDR_CTRL 56 +# define TARGET_PR_TAGGED_ADDR_ENABLE (1UL << 0) + #endif /* AARCH64_TARGET_SYSCALL_H */ diff --git a/target/arm/cpu-param.h b/target/arm/cpu-param.h index 00e7d9e937..7f38d33b8e 100644 --- a/target/arm/cpu-param.h +++ b/target/arm/cpu-param.h @@ -20,6 +20,9 @@ =20 #ifdef CONFIG_USER_ONLY #define TARGET_PAGE_BITS 12 +# ifdef TARGET_AARCH64 +# define TARGET_TAGGED_ADDRESSES +# endif #else /* * ARMv7 and later CPUs have 4K pages minimum, but ARMv5 and v6 diff --git a/target/arm/cpu.h b/target/arm/cpu.h index f240275407..72a0819eb8 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -721,6 +721,11 @@ typedef struct CPUARMState { const struct arm_boot_info *boot_info; /* Store GICv3CPUState to access from this struct */ void *gicv3state; + +#ifdef TARGET_TAGGED_ADDRESSES + /* Linux syscall tagged address support */ + bool tagged_addr_enable; +#endif } CPUARMState; =20 static inline void set_feature(CPUARMState *env, int feature) @@ -3604,6 +3609,32 @@ static inline MemTxAttrs *typecheck_memtxattrs(MemTx= Attrs *x) */ #define PAGE_BTI PAGE_TARGET_1 =20 +#ifdef TARGET_TAGGED_ADDRESSES +/** + * cpu_untagged_addr: + * @cs: CPU context + * @x: tagged address + * + * Remove any address tag from @x. This is explicitly related to the + * linux syscall TIF_TAGGED_ADDR setting, not TBI in general. + * + * There should be a better place to put this, but we need this in + * include/exec/cpu_ldst.h, and not some place linux-user specific. + */ +static inline target_ulong cpu_untagged_addr(CPUState *cs, target_ulong x) +{ + ARMCPU *cpu =3D ARM_CPU(cs); + if (cpu->env.tagged_addr_enable) { + /* + * TBI is enabled for userspace but not kernelspace addresses. + * Only clear the tag if bit 55 is clear. + */ + x &=3D sextract64(x, 0, 56); + } + return x; +} +#endif + /* * Naming convention for isar_feature functions: * Functions which test 32-bit ID registers should have _aa32_ in diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 24fc1daf02..ba4da7f8a6 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -10981,6 +10981,30 @@ static abi_long do_syscall1(void *cpu_env, int num= , abi_long arg1, } } return -TARGET_EINVAL; + case TARGET_PR_SET_TAGGED_ADDR_CTRL: + { + abi_ulong valid_mask =3D TARGET_PR_TAGGED_ADDR_ENABLE; + CPUARMState *env =3D cpu_env; + + if ((arg2 & ~valid_mask) || arg3 || arg4 || arg5) { + return -TARGET_EINVAL; + } + env->tagged_addr_enable =3D arg2 & TARGET_PR_TAGGED_ADDR_E= NABLE; + return 0; + } + case TARGET_PR_GET_TAGGED_ADDR_CTRL: + { + abi_long ret =3D 0; + CPUARMState *env =3D cpu_env; + + if (arg2 || arg3 || arg4 || arg5) { + return -TARGET_EINVAL; + } + if (env->tagged_addr_enable) { + ret |=3D TARGET_PR_TAGGED_ADDR_ENABLE; + } + return ret; + } #endif /* AARCH64 */ case PR_GET_SECCOMP: case PR_SET_SECCOMP: --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613158088; cv=none; d=zohomail.com; s=zohoarc; b=bR8s30rhDUVTofxGsCgzOiEIBeO0Xb6vYh5t+I5qbbJhaU7TZoLp7bpPKvYXIbnCZV/t2ayVdr/C0Mpm7MoadeKqtMUJB5f66eMht5/W99cYucs1Xeacyf5oJx+cKRtQMfb1y7HxLdaYxjCba27ejPGqBUMist4oAz1FGpmhGzw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613158088; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=N1bmJlvzB/Qn12/EBjVNECOmeXAVaIntK2XEeqhnPCQ=; b=UJhDj+P7hHhI3CytS0nTzMNmH8BYIwCeNqTEC85NW4NSWQQVjzzGh0ys4Zd/M9ACYfzZXxyZJEGhX8uJICSeWz9AV3j3wqxatdayCW2yX/+2n1uYP4NRjGO3Gzt7baW50WrE9WUNRJIP9ZwoUs9L42IMYc5rWE+G7DPjY/dVucY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613158087868121.05769047136334; Fri, 12 Feb 2021 11:28:07 -0800 (PST) Received: from localhost ([::1]:37530 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAe6d-0008S2-IF for importer@patchew.org; Fri, 12 Feb 2021 14:27:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39730) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVg-00026K-KP for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:44 -0500 Received: from mail-pj1-x1033.google.com ([2607:f8b0:4864:20::1033]:56123) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVU-0007qc-DW for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:44 -0500 Received: by mail-pj1-x1033.google.com with SMTP id cv23so128679pjb.5 for ; Fri, 12 Feb 2021 10:49:31 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=N1bmJlvzB/Qn12/EBjVNECOmeXAVaIntK2XEeqhnPCQ=; b=bljQLLS4tK+OxO8FsporHitpFGrh0BpHxyrej8ocahcVlG1+iw0pQtz2o8wuuFk9Kx OQ8/WIyIPDIri0mr7pvmhEoDifULoSxMwNW5508YED3m7CsvcuhxWI4EJlHmNaoxGYZd dMz2969HBYutLHgVBpw5eOZBFV+Xn05Ch+0vp8v4NAlHJ2ancnnPGWGEhv+DG4ZvURoB 7CYd1/GPLHsplpDfzc+8uXRQr+LiHqHAu5cJCLP2s28r32Et1oEeZJT8TFjHKT+KrcfY s+O0uKvmpSNJYB5ArarLGE7JJm70eyH+1tTlISzDGWSEl5j8NLIKwwtfL3aC801X1RMK ieOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=N1bmJlvzB/Qn12/EBjVNECOmeXAVaIntK2XEeqhnPCQ=; b=C0ensBBQ8sU23ZdMGDm+6doaSq9N5uuWtkTBkz1h3/LU6NSFrQ2Jb41Mf8hYQHXU3A qXiATyfEuZPlsommBjQ2Vsnqrdxt3O3ii6osqQtSPxND1RU9KbTNVKmKGNrFPFF13u+G uxTNcbjSfGnHyyh+x0/5pWxPCouOvO5DQFsKjo5UHUJwS49b6fAOmg8rW9TaLDYwimnp TKk0M4s/lxBgRvx3kraU1ytwZuQ989q0kt9jiZo1CAZ0xQVHKZZBxaOQrZpQWXJm8V5P NEnjYq23OZ4Jn0NnD/e/V2iRsoY2Z9CKZyqtAXRV8PM2wlRftrTZ0vI0WENBW7ZSDnRu mJFw== X-Gm-Message-State: AOAM533AN10UOElP0f8ZkOR4WODGPCZQRlYcUlYAxk1WCeQ/0cBFPvcA Npo+7C5akvcbPvP6jBP9xY7onE0bDzNplw== X-Google-Smtp-Source: ABdhPJzpbf83TVNHhWUCEK10Of2CiI5t8xb3kDaxZil83o4WGW3SPGVC249iQrEJrWn0Nnls/fd0GQ== X-Received: by 2002:a17:902:bd44:b029:de:74ae:771e with SMTP id b4-20020a170902bd44b02900de74ae771emr3894351plx.73.1613155770997; Fri, 12 Feb 2021 10:49:30 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 21/31] target/arm: Improve gen_top_byte_ignore Date: Fri, 12 Feb 2021 10:48:52 -0800 Message-Id: <20210212184902.1251044-22-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1033; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1033.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Use simple arithmetic instead of a conditional move when tbi0 !=3D tbi1. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/translate-a64.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 1c4b8d02f3..b23a8975d5 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -183,17 +183,20 @@ static void gen_top_byte_ignore(DisasContext *s, TCGv= _i64 dst, /* Sign-extend from bit 55. */ tcg_gen_sextract_i64(dst, src, 0, 56); =20 - if (tbi !=3D 3) { - TCGv_i64 tcg_zero =3D tcg_const_i64(0); - - /* - * The two TBI bits differ. - * If tbi0, then !tbi1: only use the extension if positive. - * if !tbi0, then tbi1: only use the extension if negative. - */ - tcg_gen_movcond_i64(tbi =3D=3D 1 ? TCG_COND_GE : TCG_COND_LT, - dst, dst, tcg_zero, dst, src); - tcg_temp_free_i64(tcg_zero); + switch (tbi) { + case 1: + /* tbi0 but !tbi1: only use the extension if positive */ + tcg_gen_and_i64(dst, dst, src); + break; + case 2: + /* !tbi0 but tbi1: only use the extension if negative */ + tcg_gen_or_i64(dst, dst, src); + break; + case 3: + /* tbi0 and tbi1: always use the extension */ + break; + default: + g_assert_not_reached(); } } } --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157509; cv=none; d=zohomail.com; s=zohoarc; b=ChUTF53e32KbW9bYF+o9qG/wr3jrVoHvpwmxwXuYh0LqFPi6fdU9HE/hZuydixG0fFeqcCXhitcLJYKZQ5w4UKAO6d5yhRyXZLJ0a7FOcTOct9ILs+Gu+W0akzdGf5Ht6w7uplkyvJL7bbg4Sm81fk+lgPjdWKWwBd0FvIxrg1A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157509; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=6BEpequXM+1RtdDCCQs/VCcQkfY8dHZtljwHQUWFfvU=; b=MNZswPrXIYreNaPtK0X0bDJ2gJ9LePBr/ahPkihGeJm/laBoHZ+D96liwzIJvcvvLlRiZ6qkqfc0qQaJzjTva5CsUhZ6WJvNxTFGIR3KAcHMg1f+BitxDmr3TLss0HPeF9z+uczjSCsQjVMPgm5LNnv5Ckn6/gfrLzlwMJVd7qU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157508726799.8796978660899; Fri, 12 Feb 2021 11:18:28 -0800 (PST) Received: from localhost ([::1]:42000 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdxS-0001ju-JU for importer@patchew.org; Fri, 12 Feb 2021 14:18:26 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39592) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVa-0001rr-6M for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:38 -0500 Received: from mail-pg1-x529.google.com ([2607:f8b0:4864:20::529]:33164) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVV-0007rX-HN for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:36 -0500 Received: by mail-pg1-x529.google.com with SMTP id z68so270827pgz.0 for ; Fri, 12 Feb 2021 10:49:33 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=6BEpequXM+1RtdDCCQs/VCcQkfY8dHZtljwHQUWFfvU=; b=HYUrqoy5OcyexQZ5qRj29T448YjzI9m7LzOdZ8gtgOH1g4KpiyPPpS9A270W7Wo1zH rcgcb9ed50UlkFM/dJdf4e+ua8RsdKYcMBsecidbocP7hQpIIQKVUy2z0lzNy7xC9zeu XWW4jUHw/QQccVOpyNVpEZ4O4nHLrBJAG6ZTb2kX6jZ8cucj27SniOkeuuy8/YcUhXCt 2H/DBM682E5rqeFoGb9skiaDJ/Wmm6PWzr+i/FiFExKYW3z6KOkHx5iyrQURWxHlbeSs 67ka14OG7JYu49yvApA5uByf2xzgFliyNX4OTQ3peoXgGpmbcQyz1K3GuOsX1GsbKtVQ KyAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=6BEpequXM+1RtdDCCQs/VCcQkfY8dHZtljwHQUWFfvU=; b=Yiavf5C5gLfgqk+MGWuZGba41b1Nem5JR1mC0aW3egRaIGtiPufrU3VylHxCPMZSic yK0gFPoe2v4fP/UQnPjjk6PvqXgxinFhLRxpNG+cFBpc74wNwmt+c7aYGW47ziE+Ylch xlma99ks1PRFgj3gaBaHtXdMmQcyC7BA2r3ICskWq66Ky6pr/yry8sFlFAqRaEgyUClI 17pWbtQddF2IprEUEBdpubOB58YdugDSeZVk0zLnAmAZI5LhSSConxKibqjVFw0A2xGf egqr4Rw/Z6z9mVNq3GCWGCLuk0MBoy7KvCvjh8WKd/MjE9qVekvrNZKwTMe7jnW7onKT +uzQ== X-Gm-Message-State: AOAM533h+5cu5xxHZZab13cZGYmjurqML1wWP7zDwUG1Q4GdIj6moKvF HyRXyBKVl3E+YkUViJz57BtW3nRj/D9bMw== X-Google-Smtp-Source: ABdhPJxbBF99sc4JcQGYnR69q7Swy2M0P72xD0YNyD+2EqmE1c5I7weVm68ihCIvjLcDpIvgDQFmSw== X-Received: by 2002:a63:ee55:: with SMTP id n21mr4416423pgk.372.1613155772319; Fri, 12 Feb 2021 10:49:32 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 22/31] target/arm: Use the proper TBI settings for linux-user Date: Fri, 12 Feb 2021 10:48:53 -0800 Message-Id: <20210212184902.1251044-23-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::529; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x529.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" We were fudging TBI1 enabled to speed up the generated code. Now that we've improved the code generation, remove this. Also, tidy the comment to reflect the current code. The pauth test was testing a kernel address (-1) and making incorrect assumptions about TBI1; stick to userland addresses. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/internals.h | 4 ++-- target/arm/cpu.c | 10 +++------- tests/tcg/aarch64/pauth-2.c | 1 - 3 files changed, 5 insertions(+), 10 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index b251fe4450..112bbb14f0 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1425,9 +1425,9 @@ static inline bool tcma_check(uint32_t desc, int bit5= 5, int ptr_tag) */ static inline uint64_t useronly_clean_ptr(uint64_t ptr) { - /* TBI is known to be enabled. */ #ifdef CONFIG_USER_ONLY - ptr =3D sextract64(ptr, 0, 56); + /* TBI0 is known to be enabled, while TBI1 is disabled. */ + ptr &=3D sextract64(ptr, 0, 56); #endif return ptr; } diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 5cf6c056c5..70cfcbc918 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -205,14 +205,10 @@ static void arm_cpu_reset(DeviceState *dev) env->vfp.zcr_el[1] =3D MIN(cpu->sve_max_vq - 1, 3); } /* - * Enable TBI0 and TBI1. While the real kernel only enables TBI0, - * turning on both here will produce smaller code and otherwise - * make no difference to the user-level emulation. - * - * In sve_probe_page, we assume that this is set. - * Do not modify this without other changes. + * Enable TBI0 but not TBI1. + * Note that this must match useronly_clean_ptr. */ - env->cp15.tcr_el[1].raw_tcr =3D (3ULL << 37); + env->cp15.tcr_el[1].raw_tcr =3D (1ULL << 37); #else /* Reset into the highest available EL */ if (arm_feature(env, ARM_FEATURE_EL3)) { diff --git a/tests/tcg/aarch64/pauth-2.c b/tests/tcg/aarch64/pauth-2.c index 9bba0beb63..978652ede3 100644 --- a/tests/tcg/aarch64/pauth-2.c +++ b/tests/tcg/aarch64/pauth-2.c @@ -53,7 +53,6 @@ void do_test(uint64_t value) int main() { do_test(0); - do_test(-1); do_test(0xda004acedeadbeefull); return 0; } --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157736; cv=none; d=zohomail.com; s=zohoarc; b=l9rGvUIi1Z1waN7T8RL2iviWROI4S40uRceZc7yukvCFz17FTaglgIZg+sJ7ukoOFgTX6bmpuTYhzTFzDA92QLJK59zRIhgRettM654+DEhIyzsDzt/sNVh8aoLB09jcUdFiqk97rQMooIZCwaSe8TeP8nagV/awbHxIhns5aj8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157736; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ec4hlo+gP8szg6yNPIbUNNDP2CtNSFlAatcye+QT23Y=; b=AJwYOlLPKYwDXvYCwgJiOJCKSC19wq8/SBEOcQYnbEC6Zkmgcj/FynVG9NFKBmM1R/fnvV0Ewd0Tybex2alz9F9byqDoWTZiXIj4Vcx84Ues0+hduBSlC9bkbrIV3t+pmk92YXDdZ8IZybOYBd9aRjG+yEjXrNu62FwEu5epBEk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157735713585.3296644877084; Fri, 12 Feb 2021 11:22:15 -0800 (PST) Received: from localhost ([::1]:50432 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAe15-00079r-Ip for importer@patchew.org; Fri, 12 Feb 2021 14:22:11 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39658) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVd-0001yY-Ri for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:41 -0500 Received: from mail-pj1-x102a.google.com ([2607:f8b0:4864:20::102a]:56115) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVW-0007sG-O0 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:41 -0500 Received: by mail-pj1-x102a.google.com with SMTP id cv23so128735pjb.5 for ; Fri, 12 Feb 2021 10:49:34 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ec4hlo+gP8szg6yNPIbUNNDP2CtNSFlAatcye+QT23Y=; b=QInPpyI56lDEC3keQ2vTLLPCno6DcncV4Pv4C9v9XMN18wZlzbtejQkXaipycQcF1c lMF+DQWvlRS4hnc2dajKdZV93hT0/NxnbBAkaIu65mDNC8XJGVAwE8KKn7VGap55upvf 8SMVLRLNvcI4SOfePvwBuTFk44Had4rh+9yO9zqpYGc6cOuQPWCQ32JLD7sLUmTmuic9 O9Kv2qLyk8nta8+4LBm5Bmd7vXvJhBuFAoljQYxhM9xenwnf1E170BN3OnM0T7FpO8Qx n3PC0Z9LIxELCU42YqaVTp7k/FWGGxEuUa405RESXMS1ngk6MTKMnYSzCvTcnOIGUdEI bC7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ec4hlo+gP8szg6yNPIbUNNDP2CtNSFlAatcye+QT23Y=; b=rGXcpQheP/4KtrUThD+mIRqIe5uytCCv/ePSbRv5+rYeUgcLt5Ez3KsveW3brn9LrQ q66a+TRmnjcglokNrgCzl3crZD9QF/k67b5C+hlaXp058014xN+XFBo5B7CMZg87LvNz LdfwnGguoXMje9wgV/QRVgJbAu1gDG8mygAjjpT8jrmGFpDuJIwxj08b+TcIl2dDlKsJ PiKP1i4SKjSW9rBntIx3GTZm3/CT5PYPM2tnjkAK75Zawfa4VPSeoygEXLePgyWKJSs7 QOQEjWkUPSDOZJ8QE3xTj8SDVvVU+QuArrLCXdFSOTf/R7wMsVvRIVGhda7QuXI84s0s 27NQ== X-Gm-Message-State: AOAM532zepmw3WyoWZhZLaVjMSBXFxBZcogVt/tIL3XAysZ1hXp8rOh2 FUFPpmXcT7ljY4BnrBBIc2SdrLIlUoiL6A== X-Google-Smtp-Source: ABdhPJyHoTb2II4aSAPTQA35lzgcTyYmdRwuFKUjxPhlLDNsShRnmW7lBhu9qE1851CImkQBI6B9Zg== X-Received: by 2002:a17:902:d48b:b029:e1:f87:265d with SMTP id c11-20020a170902d48bb02900e10f87265dmr4140227plg.1.1613155773446; Fri, 12 Feb 2021 10:49:33 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 23/31] linux-user/aarch64: Implement PR_MTE_TCF and PR_MTE_TAG Date: Fri, 12 Feb 2021 10:48:54 -0800 Message-Id: <20210212184902.1251044-24-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102a; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" These prctl fields are required for the function of MTE. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/aarch64/target_syscall.h | 9 ++++++ linux-user/syscall.c | 43 +++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) diff --git a/linux-user/aarch64/target_syscall.h b/linux-user/aarch64/targe= t_syscall.h index 820601dfcc..76f6c3391d 100644 --- a/linux-user/aarch64/target_syscall.h +++ b/linux-user/aarch64/target_syscall.h @@ -33,5 +33,14 @@ struct target_pt_regs { #define TARGET_PR_SET_TAGGED_ADDR_CTRL 55 #define TARGET_PR_GET_TAGGED_ADDR_CTRL 56 # define TARGET_PR_TAGGED_ADDR_ENABLE (1UL << 0) +/* MTE tag check fault modes */ +# define TARGET_PR_MTE_TCF_SHIFT 1 +# define TARGET_PR_MTE_TCF_NONE (0UL << TARGET_PR_MTE_TCF_SHIFT) +# define TARGET_PR_MTE_TCF_SYNC (1UL << TARGET_PR_MTE_TCF_SHIFT) +# define TARGET_PR_MTE_TCF_ASYNC (2UL << TARGET_PR_MTE_TCF_SHIFT) +# define TARGET_PR_MTE_TCF_MASK (3UL << TARGET_PR_MTE_TCF_SHIFT) +/* MTE tag inclusion mask */ +# define TARGET_PR_MTE_TAG_SHIFT 3 +# define TARGET_PR_MTE_TAG_MASK (0xffffUL << TARGET_PR_MTE_TAG_SHIF= T) =20 #endif /* AARCH64_TARGET_SYSCALL_H */ diff --git a/linux-user/syscall.c b/linux-user/syscall.c index ba4da7f8a6..61bf6148e7 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -10985,17 +10985,53 @@ static abi_long do_syscall1(void *cpu_env, int nu= m, abi_long arg1, { abi_ulong valid_mask =3D TARGET_PR_TAGGED_ADDR_ENABLE; CPUARMState *env =3D cpu_env; + ARMCPU *cpu =3D env_archcpu(env); + + if (cpu_isar_feature(aa64_mte, cpu)) { + valid_mask |=3D TARGET_PR_MTE_TCF_MASK; + valid_mask |=3D TARGET_PR_MTE_TAG_MASK; + } =20 if ((arg2 & ~valid_mask) || arg3 || arg4 || arg5) { return -TARGET_EINVAL; } env->tagged_addr_enable =3D arg2 & TARGET_PR_TAGGED_ADDR_E= NABLE; + + if (cpu_isar_feature(aa64_mte, cpu)) { + switch (arg2 & TARGET_PR_MTE_TCF_MASK) { + case TARGET_PR_MTE_TCF_NONE: + case TARGET_PR_MTE_TCF_SYNC: + case TARGET_PR_MTE_TCF_ASYNC: + break; + default: + return -EINVAL; + } + + /* + * Write PR_MTE_TCF to SCTLR_EL1[TCF0]. + * Note that the syscall values are consistent with hw. + */ + env->cp15.sctlr_el[1] =3D + deposit64(env->cp15.sctlr_el[1], 38, 2, + arg2 >> TARGET_PR_MTE_TCF_SHIFT); + + /* + * Write PR_MTE_TAG to GCR_EL1[Exclude]. + * Note that the syscall uses an include mask, + * and hardware uses an exclude mask -- invert. + */ + env->cp15.gcr_el1 =3D + deposit64(env->cp15.gcr_el1, 0, 16, + ~arg2 >> TARGET_PR_MTE_TAG_SHIFT); + arm_rebuild_hflags(env); + } return 0; } case TARGET_PR_GET_TAGGED_ADDR_CTRL: { abi_long ret =3D 0; CPUARMState *env =3D cpu_env; + ARMCPU *cpu =3D env_archcpu(env); =20 if (arg2 || arg3 || arg4 || arg5) { return -TARGET_EINVAL; @@ -11003,6 +11039,13 @@ static abi_long do_syscall1(void *cpu_env, int num= , abi_long arg1, if (env->tagged_addr_enable) { ret |=3D TARGET_PR_TAGGED_ADDR_ENABLE; } + if (cpu_isar_feature(aa64_mte, cpu)) { + /* See above. */ + ret |=3D (extract64(env->cp15.sctlr_el[1], 38, 2) + << TARGET_PR_MTE_TCF_SHIFT); + ret =3D deposit64(ret, TARGET_PR_MTE_TAG_SHIFT, 16, + ~env->cp15.gcr_el1); + } return ret; } #endif /* AARCH64 */ --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; 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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=gurvZ66hLTix7YQy4oY0/x7F0ARKo0Vv8g7JqIdz5nU=; b=Pxyno6aj1ldDTxbkH87G9Z9rmXndd7+1CpyIZa7kGIP5RsfiYWUPQ4FpIoSnmsRM4G 6s2WBsdvasbgvkfDqLMjIQICPNn5VpOcAORv2FMSc5AI1oln7+Y88BtCA7S7L5wT+d7N 6wvHm0VT0NMNwy4peFW4gC6oVlscDpNXstGEUMmSbvs+tTaayluElUvyets2/aEAr819 e+pPDxnHvE5Y/nG696JzllBQmx6m7Ag5T0+C7iVCQ7VzEZTeihbK7O3xImhhIXIAPnHD 6fZhTKTIdaJxZO0+QBrQfXuIxRS/bm3znWGE6igdVctzRAJtD87zUEJGgHrmN7oyKayU uEDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=gurvZ66hLTix7YQy4oY0/x7F0ARKo0Vv8g7JqIdz5nU=; b=VHtq8FNNWLwY4l7mEZolVlx8qi65fJoCIyHc8dW5xIMwGBsEOqKCzxPN/nGc/Yq0ZJ KmKZCzY13bbfg6sk1ZXp2kNLQZbGZK1wY6rLx1DUAkYg4ugmMF6QqCalRwlCuzlQ0kgD wGlG5CLqTioMLazbGJk3FkwrLYrcuTKlz0tajV+4GC8QUFnkadtdMXDlon2kWRNKl8EC MPomZOHSEw3g66VRrhXXA3QOhqvgC4qxJW+rSIGso2/R+/dR1iBJrAyly5tjxhyrRlvn d3OyzQ4gGfoR51SAFJ7SA5mZOTJzD045jeytb6pUVyBrwOj0yhmfICfQ0gED2VEwC0ro Qrzg== X-Gm-Message-State: AOAM531PeEr0i8pWGzzTfxNpT0NPsdIASsl8lfeTHsyVhEIbq51M6QXi 7nP94821RqksAJwyIqKqwxQfzUiuhJfPKg== X-Google-Smtp-Source: ABdhPJxWFevmrKh8vUjJa4QTdAMZW6nHYumPOdeOuE+msh0eZEEHH3EZ9iDmYBXAfuARNbzzuePj1A== X-Received: by 2002:a62:4d43:0:b029:1c6:e790:5f8f with SMTP id a64-20020a624d430000b02901c6e7905f8fmr4175335pfb.65.1613155774495; Fri, 12 Feb 2021 10:49:34 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 24/31] linux-user/aarch64: Implement PROT_MTE Date: Fri, 12 Feb 2021 10:48:55 -0800 Message-Id: <20210212184902.1251044-25-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::530; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x530.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Remember the PROT_MTE bit as PAGE_MTE/PAGE_TARGET_2. Otherwise this does not yet have effect. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- include/exec/cpu-all.h | 1 + linux-user/syscall_defs.h | 1 + target/arm/cpu.h | 1 + linux-user/mmap.c | 22 ++++++++++++++-------- 4 files changed, 17 insertions(+), 8 deletions(-) diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index d6ad774c01..09b9be845d 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -284,6 +284,7 @@ extern intptr_t qemu_host_page_mask; #endif /* Target-specific bits that will be used via page_get_flags(). */ #define PAGE_TARGET_1 0x0080 +#define PAGE_TARGET_2 0x0200 =20 #if defined(CONFIG_USER_ONLY) void page_dump(FILE *f); diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index f98c1c1c8d..46a960fccb 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1311,6 +1311,7 @@ struct target_winsize { =20 #ifdef TARGET_AARCH64 #define TARGET_PROT_BTI 0x10 +#define TARGET_PROT_MTE 0x20 #endif =20 /* Common */ diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 72a0819eb8..efa1618c4d 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -3608,6 +3608,7 @@ static inline MemTxAttrs *typecheck_memtxattrs(MemTxA= ttrs *x) * AArch64 usage of the PAGE_TARGET_* bits for linux-user. */ #define PAGE_BTI PAGE_TARGET_1 +#define PAGE_MTE PAGE_TARGET_2 =20 #ifdef TARGET_TAGGED_ADDRESSES /** diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 6690384752..85e218ab1d 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -84,18 +84,24 @@ static int validate_prot_to_pageflags(int *host_prot, i= nt prot) | (prot & PROT_EXEC ? PROT_READ : 0); =20 #ifdef TARGET_AARCH64 - /* - * The PROT_BTI bit is only accepted if the cpu supports the feature. - * Since this is the unusual case, don't bother checking unless - * the bit has been requested. If set and valid, record the bit - * within QEMU's page_flags. - */ - if (prot & TARGET_PROT_BTI) { + { ARMCPU *cpu =3D ARM_CPU(thread_cpu); - if (cpu_isar_feature(aa64_bti, cpu)) { + + /* + * The PROT_BTI bit is only accepted if the cpu supports the featu= re. + * Since this is the unusual case, don't bother checking unless + * the bit has been requested. If set and valid, record the bit + * within QEMU's page_flags. + */ + if ((prot & TARGET_PROT_BTI) && cpu_isar_feature(aa64_bti, cpu)) { valid |=3D TARGET_PROT_BTI; page_flags |=3D PAGE_BTI; } + /* Similarly for the PROT_MTE bit. */ + if ((prot & TARGET_PROT_MTE) && cpu_isar_feature(aa64_mte, cpu)) { + valid |=3D TARGET_PROT_MTE; + page_flags |=3D PAGE_MTE; + } } #endif =20 --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613156723; cv=none; d=zohomail.com; s=zohoarc; b=IM34wke7rDWqwiHM7a/EwQbbp8zSPH2E3uXf6prhyio7XjWm3pS0MwzpHpfoXqY5AsFLEPoVVEkv6kQauErNSdst9x5l5yzdwRFf8Ql3/GaiK7VoEM94/nicg5PhygZ7Dbmiqrq/hFz1Wl8YxSU+b87dENNg4BzbvLgIMLcRrCA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613156723; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=6iGOBQbQNeySYLka+HnAuyL8d09fZLYNCUWd2LdDk4k=; b=GIZwmEHYMwaAuegBd85pkI0ghefiosdp8LJ7uq153tVO0Dy+2IctyznuhzNj4JAMv2pMMbf2sbt8fukTbn/TisLKAGveV94DJD8TRHpUrssluTvHNs2tObc9Ls8POM1z4v2VCm1h76jLMayoxMbInKRqBBIP94l/Cr2FrvV9OD8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613156723272100.01503253413978; Fri, 12 Feb 2021 11:05:23 -0800 (PST) Received: from localhost ([::1]:44624 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAdke-0006Mg-O6 for importer@patchew.org; Fri, 12 Feb 2021 14:05:12 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39696) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVf-00022J-6e for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:43 -0500 Received: from mail-pg1-x536.google.com ([2607:f8b0:4864:20::536]:40734) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVZ-0007tK-MF for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:42 -0500 Received: by mail-pg1-x536.google.com with SMTP id b21so243475pgk.7 for ; Fri, 12 Feb 2021 10:49:37 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=6iGOBQbQNeySYLka+HnAuyL8d09fZLYNCUWd2LdDk4k=; b=BaxFEr2GweGRSH4JraDunvhdXeqVIPS77Zo76q5S28lXRwXoMNcxnyCppu72bVwkxG tAGGi1FqAydhqWBG8zSirDT+LKfEGiSzm0ZRCHvQO6AvsnT1QwSXg8XKj6Y2buQOR0yG 00Y8ohxBMnzmbWicm6Fmin8fYuNekfFec4VhmyT42q5dF/cZKp9hhXt57ZIdBRP0+8hV juP2cet3cLu/ujLe4rKS1WNM/cDusOOCgCPahtWTW7oMHj9PiwMZqx9CAYfm2jsaY15i 1F13SXVR2LiGqwvV4TXvHO/u9R6jhp6F+xSWiLwcrKRpD95FGoJ6W8sNMEcEPrlSJzMT NeKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=6iGOBQbQNeySYLka+HnAuyL8d09fZLYNCUWd2LdDk4k=; b=ktG8jnb9/o1x5BT18f+A8aGw8WsPd6r+Q9xocM+Jizhfj/JmMeyFPbVHCkq3g7TDcy JSIrY4UGQHl1BwTWx3FSHIxoFo0NGnTzF7UQAhbT0qzau9m0EG0Jt1Kxo5DnEIA2xNLE 05inMRwEbIlZ7+sUC4ETpEF9RBGRjoC25KI+P1YRcF+6esA8IraIAsV4Y4Ci9j8jejtg Mwy8oz93bup4Jn6Wv0LTo8u+QR0wumKbbm/XApCQJBM6rFbsyyYDcplU+dYXTBpWrz1W g4np/uLmogiy03XnG+Otn/zs1oKoxynV4QVqjcAIvSF5ika76XyEVVk5tfYs+LteKmaa f7yg== X-Gm-Message-State: AOAM530dkQZg3POsLfTaAMvR3OsKYzL+w+JjINrIpz+M8pAlwLn146F+ diDdJwNKLMtsEQ0ARQPOEDrdDx7Zsow1VQ== X-Google-Smtp-Source: ABdhPJx6jjB7Z9I/FuNQGS+wOqXUyNn9PqdtsU4LiLceJBCdlKhyQtY4gFDv3hRc+t6/LJ/e5q5WCg== X-Received: by 2002:a62:8fca:0:b029:1a9:39bc:ed37 with SMTP id n193-20020a628fca0000b02901a939bced37mr4071597pfd.61.1613155775703; Fri, 12 Feb 2021 10:49:35 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 25/31] target/arm: Split out syndrome.h from internals.h Date: Fri, 12 Feb 2021 10:48:56 -0800 Message-Id: <20210212184902.1251044-26-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::536; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x536.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Move everything related to syndromes to a new file, which can be shared with linux-user. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- target/arm/internals.h | 245 +----------------------------------- target/arm/syndrome.h | 273 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 274 insertions(+), 244 deletions(-) create mode 100644 target/arm/syndrome.h diff --git a/target/arm/internals.h b/target/arm/internals.h index 112bbb14f0..c38d541017 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -26,6 +26,7 @@ #define TARGET_ARM_INTERNALS_H =20 #include "hw/registerfields.h" +#include "syndrome.h" =20 /* register banks for CPU modes */ #define BANK_USRSYS 0 @@ -262,250 +263,6 @@ static inline bool extended_addresses_enabled(CPUARMS= tate *env) (arm_feature(env, ARM_FEATURE_LPAE) && (tcr->raw_tcr & TTBCR_EA= E)); } =20 -/* Valid Syndrome Register EC field values */ -enum arm_exception_class { - EC_UNCATEGORIZED =3D 0x00, - EC_WFX_TRAP =3D 0x01, - EC_CP15RTTRAP =3D 0x03, - EC_CP15RRTTRAP =3D 0x04, - EC_CP14RTTRAP =3D 0x05, - EC_CP14DTTRAP =3D 0x06, - EC_ADVSIMDFPACCESSTRAP =3D 0x07, - EC_FPIDTRAP =3D 0x08, - EC_PACTRAP =3D 0x09, - EC_CP14RRTTRAP =3D 0x0c, - EC_BTITRAP =3D 0x0d, - EC_ILLEGALSTATE =3D 0x0e, - EC_AA32_SVC =3D 0x11, - EC_AA32_HVC =3D 0x12, - EC_AA32_SMC =3D 0x13, - EC_AA64_SVC =3D 0x15, - EC_AA64_HVC =3D 0x16, - EC_AA64_SMC =3D 0x17, - EC_SYSTEMREGISTERTRAP =3D 0x18, - EC_SVEACCESSTRAP =3D 0x19, - EC_INSNABORT =3D 0x20, - EC_INSNABORT_SAME_EL =3D 0x21, - EC_PCALIGNMENT =3D 0x22, - EC_DATAABORT =3D 0x24, - EC_DATAABORT_SAME_EL =3D 0x25, - EC_SPALIGNMENT =3D 0x26, - EC_AA32_FPTRAP =3D 0x28, - EC_AA64_FPTRAP =3D 0x2c, - EC_SERROR =3D 0x2f, - EC_BREAKPOINT =3D 0x30, - EC_BREAKPOINT_SAME_EL =3D 0x31, - EC_SOFTWARESTEP =3D 0x32, - EC_SOFTWARESTEP_SAME_EL =3D 0x33, - EC_WATCHPOINT =3D 0x34, - EC_WATCHPOINT_SAME_EL =3D 0x35, - EC_AA32_BKPT =3D 0x38, - EC_VECTORCATCH =3D 0x3a, - EC_AA64_BKPT =3D 0x3c, -}; - -#define ARM_EL_EC_SHIFT 26 -#define ARM_EL_IL_SHIFT 25 -#define ARM_EL_ISV_SHIFT 24 -#define ARM_EL_IL (1 << ARM_EL_IL_SHIFT) -#define ARM_EL_ISV (1 << ARM_EL_ISV_SHIFT) - -static inline uint32_t syn_get_ec(uint32_t syn) -{ - return syn >> ARM_EL_EC_SHIFT; -} - -/* Utility functions for constructing various kinds of syndrome value. - * Note that in general we follow the AArch64 syndrome values; in a - * few cases the value in HSR for exceptions taken to AArch32 Hyp - * mode differs slightly, and we fix this up when populating HSR in - * arm_cpu_do_interrupt_aarch32_hyp(). - * The exception is FP/SIMD access traps -- these report extra information - * when taking an exception to AArch32. For those we include the extra cop= roc - * and TA fields, and mask them out when taking the exception to AArch64. - */ -static inline uint32_t syn_uncategorized(void) -{ - return (EC_UNCATEGORIZED << ARM_EL_EC_SHIFT) | ARM_EL_IL; -} - -static inline uint32_t syn_aa64_svc(uint32_t imm16) -{ - return (EC_AA64_SVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); -} - -static inline uint32_t syn_aa64_hvc(uint32_t imm16) -{ - return (EC_AA64_HVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); -} - -static inline uint32_t syn_aa64_smc(uint32_t imm16) -{ - return (EC_AA64_SMC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); -} - -static inline uint32_t syn_aa32_svc(uint32_t imm16, bool is_16bit) -{ - return (EC_AA32_SVC << ARM_EL_EC_SHIFT) | (imm16 & 0xffff) - | (is_16bit ? 0 : ARM_EL_IL); -} - -static inline uint32_t syn_aa32_hvc(uint32_t imm16) -{ - return (EC_AA32_HVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); -} - -static inline uint32_t syn_aa32_smc(void) -{ - return (EC_AA32_SMC << ARM_EL_EC_SHIFT) | ARM_EL_IL; -} - -static inline uint32_t syn_aa64_bkpt(uint32_t imm16) -{ - return (EC_AA64_BKPT << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff= ); -} - -static inline uint32_t syn_aa32_bkpt(uint32_t imm16, bool is_16bit) -{ - return (EC_AA32_BKPT << ARM_EL_EC_SHIFT) | (imm16 & 0xffff) - | (is_16bit ? 0 : ARM_EL_IL); -} - -static inline uint32_t syn_aa64_sysregtrap(int op0, int op1, int op2, - int crn, int crm, int rt, - int isread) -{ - return (EC_SYSTEMREGISTERTRAP << ARM_EL_EC_SHIFT) | ARM_EL_IL - | (op0 << 20) | (op2 << 17) | (op1 << 14) | (crn << 10) | (rt << 5) - | (crm << 1) | isread; -} - -static inline uint32_t syn_cp14_rt_trap(int cv, int cond, int opc1, int op= c2, - int crn, int crm, int rt, int isre= ad, - bool is_16bit) -{ - return (EC_CP14RTTRAP << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | (cv << 24) | (cond << 20) | (opc2 << 17) | (opc1 << 14) - | (crn << 10) | (rt << 5) | (crm << 1) | isread; -} - -static inline uint32_t syn_cp15_rt_trap(int cv, int cond, int opc1, int op= c2, - int crn, int crm, int rt, int isre= ad, - bool is_16bit) -{ - return (EC_CP15RTTRAP << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | (cv << 24) | (cond << 20) | (opc2 << 17) | (opc1 << 14) - | (crn << 10) | (rt << 5) | (crm << 1) | isread; -} - -static inline uint32_t syn_cp14_rrt_trap(int cv, int cond, int opc1, int c= rm, - int rt, int rt2, int isread, - bool is_16bit) -{ - return (EC_CP14RRTTRAP << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | (cv << 24) | (cond << 20) | (opc1 << 16) - | (rt2 << 10) | (rt << 5) | (crm << 1) | isread; -} - -static inline uint32_t syn_cp15_rrt_trap(int cv, int cond, int opc1, int c= rm, - int rt, int rt2, int isread, - bool is_16bit) -{ - return (EC_CP15RRTTRAP << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | (cv << 24) | (cond << 20) | (opc1 << 16) - | (rt2 << 10) | (rt << 5) | (crm << 1) | isread; -} - -static inline uint32_t syn_fp_access_trap(int cv, int cond, bool is_16bit) -{ - /* AArch32 FP trap or any AArch64 FP/SIMD trap: TA =3D=3D 0 coproc =3D= =3D 0xa */ - return (EC_ADVSIMDFPACCESSTRAP << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | (cv << 24) | (cond << 20) | 0xa; -} - -static inline uint32_t syn_simd_access_trap(int cv, int cond, bool is_16bi= t) -{ - /* AArch32 SIMD trap: TA =3D=3D 1 coproc =3D=3D 0 */ - return (EC_ADVSIMDFPACCESSTRAP << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | (cv << 24) | (cond << 20) | (1 << 5); -} - -static inline uint32_t syn_sve_access_trap(void) -{ - return EC_SVEACCESSTRAP << ARM_EL_EC_SHIFT; -} - -static inline uint32_t syn_pactrap(void) -{ - return EC_PACTRAP << ARM_EL_EC_SHIFT; -} - -static inline uint32_t syn_btitrap(int btype) -{ - return (EC_BTITRAP << ARM_EL_EC_SHIFT) | btype; -} - -static inline uint32_t syn_insn_abort(int same_el, int ea, int s1ptw, int = fsc) -{ - return (EC_INSNABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) - | ARM_EL_IL | (ea << 9) | (s1ptw << 7) | fsc; -} - -static inline uint32_t syn_data_abort_no_iss(int same_el, int fnv, - int ea, int cm, int s1ptw, - int wnr, int fsc) -{ - return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) - | ARM_EL_IL - | (fnv << 10) | (ea << 9) | (cm << 8) | (s1ptw << 7) - | (wnr << 6) | fsc; -} - -static inline uint32_t syn_data_abort_with_iss(int same_el, - int sas, int sse, int srt, - int sf, int ar, - int ea, int cm, int s1ptw, - int wnr, int fsc, - bool is_16bit) -{ - return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) - | (is_16bit ? 0 : ARM_EL_IL) - | ARM_EL_ISV | (sas << 22) | (sse << 21) | (srt << 16) - | (sf << 15) | (ar << 14) - | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc; -} - -static inline uint32_t syn_swstep(int same_el, int isv, int ex) -{ - return (EC_SOFTWARESTEP << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SH= IFT) - | ARM_EL_IL | (isv << 24) | (ex << 6) | 0x22; -} - -static inline uint32_t syn_watchpoint(int same_el, int cm, int wnr) -{ - return (EC_WATCHPOINT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIF= T) - | ARM_EL_IL | (cm << 8) | (wnr << 6) | 0x22; -} - -static inline uint32_t syn_breakpoint(int same_el) -{ - return (EC_BREAKPOINT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIF= T) - | ARM_EL_IL | 0x22; -} - -static inline uint32_t syn_wfx(int cv, int cond, int ti, bool is_16bit) -{ - return (EC_WFX_TRAP << ARM_EL_EC_SHIFT) | - (is_16bit ? 0 : (1 << ARM_EL_IL_SHIFT)) | - (cv << 24) | (cond << 20) | ti; -} - /* Update a QEMU watchpoint based on the information the guest has set in = the * DBGWCR_EL1 and DBGWVR_EL1 registers. */ diff --git a/target/arm/syndrome.h b/target/arm/syndrome.h new file mode 100644 index 0000000000..39a31260f2 --- /dev/null +++ b/target/arm/syndrome.h @@ -0,0 +1,273 @@ +/* + * QEMU ARM CPU -- syndrome functions and types + * + * Copyright (c) 2014 Linaro Ltd + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see + * + * + * This header defines functions, types, etc which need to be shared + * between different source files within target/arm/ but which are + * private to it and not required by the rest of QEMU. + */ + +#ifndef TARGET_ARM_SYNDROME_H +#define TARGET_ARM_SYNDROME_H + +/* Valid Syndrome Register EC field values */ +enum arm_exception_class { + EC_UNCATEGORIZED =3D 0x00, + EC_WFX_TRAP =3D 0x01, + EC_CP15RTTRAP =3D 0x03, + EC_CP15RRTTRAP =3D 0x04, + EC_CP14RTTRAP =3D 0x05, + EC_CP14DTTRAP =3D 0x06, + EC_ADVSIMDFPACCESSTRAP =3D 0x07, + EC_FPIDTRAP =3D 0x08, + EC_PACTRAP =3D 0x09, + EC_CP14RRTTRAP =3D 0x0c, + EC_BTITRAP =3D 0x0d, + EC_ILLEGALSTATE =3D 0x0e, + EC_AA32_SVC =3D 0x11, + EC_AA32_HVC =3D 0x12, + EC_AA32_SMC =3D 0x13, + EC_AA64_SVC =3D 0x15, + EC_AA64_HVC =3D 0x16, + EC_AA64_SMC =3D 0x17, + EC_SYSTEMREGISTERTRAP =3D 0x18, + EC_SVEACCESSTRAP =3D 0x19, + EC_INSNABORT =3D 0x20, + EC_INSNABORT_SAME_EL =3D 0x21, + EC_PCALIGNMENT =3D 0x22, + EC_DATAABORT =3D 0x24, + EC_DATAABORT_SAME_EL =3D 0x25, + EC_SPALIGNMENT =3D 0x26, + EC_AA32_FPTRAP =3D 0x28, + EC_AA64_FPTRAP =3D 0x2c, + EC_SERROR =3D 0x2f, + EC_BREAKPOINT =3D 0x30, + EC_BREAKPOINT_SAME_EL =3D 0x31, + EC_SOFTWARESTEP =3D 0x32, + EC_SOFTWARESTEP_SAME_EL =3D 0x33, + EC_WATCHPOINT =3D 0x34, + EC_WATCHPOINT_SAME_EL =3D 0x35, + EC_AA32_BKPT =3D 0x38, + EC_VECTORCATCH =3D 0x3a, + EC_AA64_BKPT =3D 0x3c, +}; + +#define ARM_EL_EC_SHIFT 26 +#define ARM_EL_IL_SHIFT 25 +#define ARM_EL_ISV_SHIFT 24 +#define ARM_EL_IL (1 << ARM_EL_IL_SHIFT) +#define ARM_EL_ISV (1 << ARM_EL_ISV_SHIFT) + +static inline uint32_t syn_get_ec(uint32_t syn) +{ + return syn >> ARM_EL_EC_SHIFT; +} + +/* + * Utility functions for constructing various kinds of syndrome value. + * Note that in general we follow the AArch64 syndrome values; in a + * few cases the value in HSR for exceptions taken to AArch32 Hyp + * mode differs slightly, and we fix this up when populating HSR in + * arm_cpu_do_interrupt_aarch32_hyp(). + * The exception is FP/SIMD access traps -- these report extra information + * when taking an exception to AArch32. For those we include the extra cop= roc + * and TA fields, and mask them out when taking the exception to AArch64. + */ +static inline uint32_t syn_uncategorized(void) +{ + return (EC_UNCATEGORIZED << ARM_EL_EC_SHIFT) | ARM_EL_IL; +} + +static inline uint32_t syn_aa64_svc(uint32_t imm16) +{ + return (EC_AA64_SVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); +} + +static inline uint32_t syn_aa64_hvc(uint32_t imm16) +{ + return (EC_AA64_HVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); +} + +static inline uint32_t syn_aa64_smc(uint32_t imm16) +{ + return (EC_AA64_SMC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); +} + +static inline uint32_t syn_aa32_svc(uint32_t imm16, bool is_16bit) +{ + return (EC_AA32_SVC << ARM_EL_EC_SHIFT) | (imm16 & 0xffff) + | (is_16bit ? 0 : ARM_EL_IL); +} + +static inline uint32_t syn_aa32_hvc(uint32_t imm16) +{ + return (EC_AA32_HVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff); +} + +static inline uint32_t syn_aa32_smc(void) +{ + return (EC_AA32_SMC << ARM_EL_EC_SHIFT) | ARM_EL_IL; +} + +static inline uint32_t syn_aa64_bkpt(uint32_t imm16) +{ + return (EC_AA64_BKPT << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff= ); +} + +static inline uint32_t syn_aa32_bkpt(uint32_t imm16, bool is_16bit) +{ + return (EC_AA32_BKPT << ARM_EL_EC_SHIFT) | (imm16 & 0xffff) + | (is_16bit ? 0 : ARM_EL_IL); +} + +static inline uint32_t syn_aa64_sysregtrap(int op0, int op1, int op2, + int crn, int crm, int rt, + int isread) +{ + return (EC_SYSTEMREGISTERTRAP << ARM_EL_EC_SHIFT) | ARM_EL_IL + | (op0 << 20) | (op2 << 17) | (op1 << 14) | (crn << 10) | (rt << 5) + | (crm << 1) | isread; +} + +static inline uint32_t syn_cp14_rt_trap(int cv, int cond, int opc1, int op= c2, + int crn, int crm, int rt, int isre= ad, + bool is_16bit) +{ + return (EC_CP14RTTRAP << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | (cv << 24) | (cond << 20) | (opc2 << 17) | (opc1 << 14) + | (crn << 10) | (rt << 5) | (crm << 1) | isread; +} + +static inline uint32_t syn_cp15_rt_trap(int cv, int cond, int opc1, int op= c2, + int crn, int crm, int rt, int isre= ad, + bool is_16bit) +{ + return (EC_CP15RTTRAP << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | (cv << 24) | (cond << 20) | (opc2 << 17) | (opc1 << 14) + | (crn << 10) | (rt << 5) | (crm << 1) | isread; +} + +static inline uint32_t syn_cp14_rrt_trap(int cv, int cond, int opc1, int c= rm, + int rt, int rt2, int isread, + bool is_16bit) +{ + return (EC_CP14RRTTRAP << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | (cv << 24) | (cond << 20) | (opc1 << 16) + | (rt2 << 10) | (rt << 5) | (crm << 1) | isread; +} + +static inline uint32_t syn_cp15_rrt_trap(int cv, int cond, int opc1, int c= rm, + int rt, int rt2, int isread, + bool is_16bit) +{ + return (EC_CP15RRTTRAP << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | (cv << 24) | (cond << 20) | (opc1 << 16) + | (rt2 << 10) | (rt << 5) | (crm << 1) | isread; +} + +static inline uint32_t syn_fp_access_trap(int cv, int cond, bool is_16bit) +{ + /* AArch32 FP trap or any AArch64 FP/SIMD trap: TA =3D=3D 0 coproc =3D= =3D 0xa */ + return (EC_ADVSIMDFPACCESSTRAP << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | (cv << 24) | (cond << 20) | 0xa; +} + +static inline uint32_t syn_simd_access_trap(int cv, int cond, bool is_16bi= t) +{ + /* AArch32 SIMD trap: TA =3D=3D 1 coproc =3D=3D 0 */ + return (EC_ADVSIMDFPACCESSTRAP << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | (cv << 24) | (cond << 20) | (1 << 5); +} + +static inline uint32_t syn_sve_access_trap(void) +{ + return EC_SVEACCESSTRAP << ARM_EL_EC_SHIFT; +} + +static inline uint32_t syn_pactrap(void) +{ + return EC_PACTRAP << ARM_EL_EC_SHIFT; +} + +static inline uint32_t syn_btitrap(int btype) +{ + return (EC_BTITRAP << ARM_EL_EC_SHIFT) | btype; +} + +static inline uint32_t syn_insn_abort(int same_el, int ea, int s1ptw, int = fsc) +{ + return (EC_INSNABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) + | ARM_EL_IL | (ea << 9) | (s1ptw << 7) | fsc; +} + +static inline uint32_t syn_data_abort_no_iss(int same_el, int fnv, + int ea, int cm, int s1ptw, + int wnr, int fsc) +{ + return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) + | ARM_EL_IL + | (fnv << 10) | (ea << 9) | (cm << 8) | (s1ptw << 7) + | (wnr << 6) | fsc; +} + +static inline uint32_t syn_data_abort_with_iss(int same_el, + int sas, int sse, int srt, + int sf, int ar, + int ea, int cm, int s1ptw, + int wnr, int fsc, + bool is_16bit) +{ + return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | ARM_EL_ISV | (sas << 22) | (sse << 21) | (srt << 16) + | (sf << 15) | (ar << 14) + | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc; +} + +static inline uint32_t syn_swstep(int same_el, int isv, int ex) +{ + return (EC_SOFTWARESTEP << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SH= IFT) + | ARM_EL_IL | (isv << 24) | (ex << 6) | 0x22; +} + +static inline uint32_t syn_watchpoint(int same_el, int cm, int wnr) +{ + return (EC_WATCHPOINT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIF= T) + | ARM_EL_IL | (cm << 8) | (wnr << 6) | 0x22; +} + +static inline uint32_t syn_breakpoint(int same_el) +{ + return (EC_BREAKPOINT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIF= T) + | ARM_EL_IL | 0x22; +} + +static inline uint32_t syn_wfx(int cv, int cond, int ti, bool is_16bit) +{ + return (EC_WFX_TRAP << ARM_EL_EC_SHIFT) | + (is_16bit ? 0 : (1 << ARM_EL_IL_SHIFT)) | + (cv << 24) | (cond << 20) | ti; +} + +#endif /* TARGET_ARM_SYNDROME_H */ --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613158584; cv=none; d=zohomail.com; s=zohoarc; b=D8/f/jnV4GQx9MJCmr6bkkraKXJrendvLr7+aZ5z/qGeqo6AlFv9wN91PmUfqmSLkq1ykVKNZxyb+uBCYwFda6WRsmZJWYT4D2Hu/sgyQDPVpD+dOaIzDJHR2SklYtZuY+1bjGk/bfeH4HnN/WUHJT2jEnM9pZqpYcfMK6NbNWU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613158584; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=+5hZcB3mFjnWG5tCYVBAVH8vDfhhkDYHCqbXJC4msCo=; b=MS2wJgE1bdnHeSOGwpeGukndylEEzonaU9qq+uIIbajIMkdWs6HCHcJpfjsmKIIvn7cMHT7yNsX3tpcEUyHm34ltbO4y7WyfC4+VIG1EwouvEkZWsT1ckH2JIACh92tOp6ju6Lw+h0wX2Z+s8NJge0SvgvFWl4yks4+MHuMDsX4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613158583701725.169525227791; Fri, 12 Feb 2021 11:36:23 -0800 (PST) Received: from localhost ([::1]:54812 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAeEo-00081Y-J5 for importer@patchew.org; Fri, 12 Feb 2021 14:36:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39742) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVh-00028y-MB for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:45 -0500 Received: from mail-pg1-x535.google.com ([2607:f8b0:4864:20::535]:35455) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVa-0007td-UH for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:45 -0500 Received: by mail-pg1-x535.google.com with SMTP id t25so260566pga.2 for ; Fri, 12 Feb 2021 10:49:38 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=+5hZcB3mFjnWG5tCYVBAVH8vDfhhkDYHCqbXJC4msCo=; b=GtQ9tGDzfX//z1tZrGnr4M0HenudlN48lmOguoujGKTgVc19m1m/SlpvKBoqqCiXI5 KXcZCGgpi4GXncaAz9CtnsAQr5G6f9JUAST+PhvBZhm6cSZITDTjvIdrgsySaSCQUZUm 4UXrwSU2llZkj7W2K2DpC4qPo59mRfuCoODbcLafDpDPc4R1aWGPgZoMvWA/9/uZHpiA WBoCEYMs3mFJJAbo1jx06/yicE4bH8x+IZKnKzH7gEhEEe807zilzPiP8x7T+yEvZv5W qoOekpX0zHDRByFoqO8T5eGjbU4KRMCZ4kWFnOjy7EjBOINUuCVShdYPPrxZvD4wjizy 9w7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=+5hZcB3mFjnWG5tCYVBAVH8vDfhhkDYHCqbXJC4msCo=; b=oesnK6KjvkUgjcYR8FCBci9rHaJ1UpSWtWkBm2RFLj3e86dLq03EwP+XMjbI8C67Ud edtFgQdmj/ZcGt+n4Y/AyOXeLpc1S10WijoKxcBE/vEH5MololMIZgJv51Gi8cy8PJOQ 36ejVPjlU+0C7qUFKoCzSLasXhNwPjUVzDTLYQfSz6FES1eZiwW6L0zX1miSurOrEubJ LPQOTa08pL2HOIzUPrZTozwgMLZmgb0M482BNiKSuT4oi0BL0g+AbnDS2LIUAEhUBEMd szJdOo1ZceLIvzA+J8H752QJ2kw3znpt9NZyZF5X2LbKcN2UUcw6oWUzPnr1ism4l4/q odlA== X-Gm-Message-State: AOAM531j+HXH9tvRPrls5SM0lq2K+Kzus7ukBvp1/8OO1pLAuTGnL5Ml y6ItSX2/BdhU221hNBeA9e1LtSHKOFKqvg== X-Google-Smtp-Source: ABdhPJylgiitpXfKFUDtCLIuq31oCAEu+ppN2vIbgdolvj7a8WSWzfB9AL35G0nATFyJGgkyqdT1tQ== X-Received: by 2002:a63:1611:: with SMTP id w17mr4431324pgl.330.1613155776661; Fri, 12 Feb 2021 10:49:36 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 26/31] linux-user/aarch64: Pass syndrome to EXC_*_ABORT Date: Fri, 12 Feb 2021 10:48:57 -0800 Message-Id: <20210212184902.1251044-27-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::535; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x535.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" A proper syndrome is required to fill in the proper si_code. Use page_get_flags to determine permission vs translation for user-only. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/aarch64/cpu_loop.c | 24 +++++++++++++++++++++--- target/arm/tlb_helper.c | 15 +++++++++------ 2 files changed, 30 insertions(+), 9 deletions(-) diff --git a/linux-user/aarch64/cpu_loop.c b/linux-user/aarch64/cpu_loop.c index 42b9c15f53..4e43906e66 100644 --- a/linux-user/aarch64/cpu_loop.c +++ b/linux-user/aarch64/cpu_loop.c @@ -23,6 +23,7 @@ #include "cpu_loop-common.h" #include "qemu/guest-random.h" #include "hw/semihosting/common-semi.h" +#include "target/arm/syndrome.h" =20 #define get_user_code_u32(x, gaddr, env) \ ({ abi_long __r =3D get_user_u32((x), (gaddr)); \ @@ -76,7 +77,7 @@ void cpu_loop(CPUARMState *env) { CPUState *cs =3D env_cpu(env); - int trapnr; + int trapnr, ec, fsc; abi_long ret; target_siginfo_t info; =20 @@ -117,9 +118,26 @@ void cpu_loop(CPUARMState *env) case EXCP_DATA_ABORT: info.si_signo =3D TARGET_SIGSEGV; info.si_errno =3D 0; - /* XXX: check env->error_code */ - info.si_code =3D TARGET_SEGV_MAPERR; info._sifields._sigfault._addr =3D env->exception.vaddress; + + /* We should only arrive here with EC in {DATAABORT, INSNABORT= }. */ + ec =3D syn_get_ec(env->exception.syndrome); + assert(ec =3D=3D EC_DATAABORT || ec =3D=3D EC_INSNABORT); + + /* Both EC have the same format for FSC, or close enough. */ + fsc =3D extract32(env->exception.syndrome, 0, 6); + switch (fsc) { + case 0x04 ... 0x07: /* Translation fault, level {0-3} */ + info.si_code =3D TARGET_SEGV_MAPERR; + break; + case 0x09 ... 0x0b: /* Access flag fault, level {1-3} */ + case 0x0d ... 0x0f: /* Permission fault, level {1-3} */ + info.si_code =3D TARGET_SEGV_ACCERR; + break; + default: + g_assert_not_reached(); + } + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); break; case EXCP_DEBUG: diff --git a/target/arm/tlb_helper.c b/target/arm/tlb_helper.c index df85079d9f..9609333cbd 100644 --- a/target/arm/tlb_helper.c +++ b/target/arm/tlb_helper.c @@ -154,21 +154,24 @@ bool arm_cpu_tlb_fill(CPUState *cs, vaddr address, in= t size, bool probe, uintptr_t retaddr) { ARMCPU *cpu =3D ARM_CPU(cs); + ARMMMUFaultInfo fi =3D {}; =20 #ifdef CONFIG_USER_ONLY - cpu->env.exception.vaddress =3D address; - if (access_type =3D=3D MMU_INST_FETCH) { - cs->exception_index =3D EXCP_PREFETCH_ABORT; + int flags =3D page_get_flags(useronly_clean_ptr(address)); + if (flags & PAGE_VALID) { + fi.type =3D ARMFault_Permission; } else { - cs->exception_index =3D EXCP_DATA_ABORT; + fi.type =3D ARMFault_Translation; } - cpu_loop_exit_restore(cs, retaddr); + + /* now we have a real cpu fault */ + cpu_restore_state(cs, retaddr, true); + arm_deliver_fault(cpu, address, access_type, mmu_idx, &fi); #else hwaddr phys_addr; target_ulong page_size; int prot, ret; MemTxAttrs attrs =3D {}; - ARMMMUFaultInfo fi =3D {}; ARMCacheAttrs cacheattrs =3D {}; =20 /* --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::52f; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/aarch64/target_signal.h | 2 ++ linux-user/aarch64/cpu_loop.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/linux-user/aarch64/target_signal.h b/linux-user/aarch64/target= _signal.h index ddd73169f0..777fb667fe 100644 --- a/linux-user/aarch64/target_signal.h +++ b/linux-user/aarch64/target_signal.h @@ -21,5 +21,7 @@ typedef struct target_sigaltstack { =20 #include "../generic/signal.h" =20 +#define TARGET_SEGV_MTESERR 9 /* Synchronous ARM MTE exception */ + #define TARGET_ARCH_HAS_SETUP_FRAME #endif /* AARCH64_TARGET_SIGNAL_H */ diff --git a/linux-user/aarch64/cpu_loop.c b/linux-user/aarch64/cpu_loop.c index 4e43906e66..b6a2e65593 100644 --- a/linux-user/aarch64/cpu_loop.c +++ b/linux-user/aarch64/cpu_loop.c @@ -134,6 +134,9 @@ void cpu_loop(CPUARMState *env) case 0x0d ... 0x0f: /* Permission fault, level {1-3} */ info.si_code =3D TARGET_SEGV_ACCERR; break; + case 0x11: /* Synchronous Tag Check Fault */ + info.si_code =3D TARGET_SEGV_MTESERR; + break; default: g_assert_not_reached(); } --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613158433; cv=none; d=zohomail.com; s=zohoarc; b=muvM/ozNM9mYMAXNt3Gi/+6aqFpuEe0uA2JUmQcBuheZcVSffiiBHesMkw+Uur0vKJR3mpZ3m4jqNeOsdIZS7o6qUB5TyH4mFXE0orJsQTUTmtrGCRmtREMK67XTyeLPYdLd9KRhc1T3siGmsJfX8XtkpW0u8KJBNTr6q1YeKrc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613158433; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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[174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=974AXR02Bhg4aUVmYtdJXY9jOyaOxnirKIOpaZIiAKE=; b=uL6QzSKvUa1R3uUlp4m8xmRsrjdhlzNPPwrd9PHaIKNmf0vhfQZyEJJKCKgqXH1WvH 2cx38JKyf5KCcTxTwpJuqXH+DGf4T5lFYuiZWclrqpqfKVF5cTOFeHlO30D3mVjTc95j OkEYTF1nWt4AHU3Psl02Xx1Nskdl1NYvS4aFbUM0y13kcs5rAOahZAu8zxjQZtW5hCyc cK3OvnKxphlznm7M8F+UTN49SYNiyXbaWLEfc0faq1VmuaPq5K79+mJCPX1VZ1ehCPMB zjwM2oRGfaaxxbGQglk5zgCg1Ps9nsSQDrMMAr7lX6JoKo9Xj50Rf53q0qEUo3F3ltGP DNvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=974AXR02Bhg4aUVmYtdJXY9jOyaOxnirKIOpaZIiAKE=; b=My7NnbyIHWbwUMQ0Es1aAufvqkO89HvKkU6L8Sp3Ch2wCxga9htCGA2JnHdFKbk7NP +TdJeHE9OEXaiKWDRHWq5BeWMuIx95KBNFylomlB5/NsrDEHh+Ysgj4ZdvswPClD6iJr 06mRjsZDWzaHKOfF6BK9nZdUCiGVf4F3d8fyXx9VgZHhW/0YO7gNSyBdPzZlm8wd3H0s gwAvextfg6F7VXM42jney38toBGDGZZ4BEvSPj5K3oC6homTW9MgdYbBE7FdjoxYiZ5d bfgvaaOLqIptC6x52x3ay8TRv+5JLkEArGnqutA0B2AMSGRaVXhh4gkCNfrFuAK+GO5J xKqQ== X-Gm-Message-State: AOAM531maKPbmmSWmR6EAZqURKKlq5AaBrk/OK5PZwPoGarDrYVe6PPp ++pDSvNojzctkJ2bQ3VWZTjCvaGFpSMvvQ== X-Google-Smtp-Source: ABdhPJzrqZybmK4UVs75ulIQ0SBsViXLFBMJrqgmsn6pb9C6QjE1nSms9qUk0n+zW4o+gif+Q1XlCg== X-Received: by 2002:a63:f4e:: with SMTP id 14mr4549998pgp.3.1613155778890; Fri, 12 Feb 2021 10:49:38 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 28/31] linux-user/aarch64: Signal SEGV_MTEAERR for async tag check error Date: Fri, 12 Feb 2021 10:48:59 -0800 Message-Id: <20210212184902.1251044-29-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::52b; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" The real kernel collects _TIF_MTE_ASYNC_FAULT into the current thread's state on any kernel entry (interrupt, exception etc), and then delivers the signal in advance of resuming the thread. This means that while the signal won't be delivered immediately, it will not be delayed forever -- at minimum it will be delivered after the next clock interrupt. We don't have a clock interrupt in linux-user, so we issue a cpu_kick to signal a return to the main loop at the end of the current TB. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/aarch64/target_signal.h | 1 + linux-user/aarch64/cpu_loop.c | 11 +++++++++++ target/arm/mte_helper.c | 10 ++++++++++ 3 files changed, 22 insertions(+) diff --git a/linux-user/aarch64/target_signal.h b/linux-user/aarch64/target= _signal.h index 777fb667fe..18013e1b23 100644 --- a/linux-user/aarch64/target_signal.h +++ b/linux-user/aarch64/target_signal.h @@ -21,6 +21,7 @@ typedef struct target_sigaltstack { =20 #include "../generic/signal.h" =20 +#define TARGET_SEGV_MTEAERR 8 /* Asynchronous ARM MTE error */ #define TARGET_SEGV_MTESERR 9 /* Synchronous ARM MTE exception */ =20 #define TARGET_ARCH_HAS_SETUP_FRAME diff --git a/linux-user/aarch64/cpu_loop.c b/linux-user/aarch64/cpu_loop.c index b6a2e65593..7c42f65706 100644 --- a/linux-user/aarch64/cpu_loop.c +++ b/linux-user/aarch64/cpu_loop.c @@ -164,6 +164,17 @@ void cpu_loop(CPUARMState *env) EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\= n", trapnr); abort(); } + + /* Check for MTE asynchronous faults */ + if (unlikely(env->cp15.tfsr_el[0])) { + env->cp15.tfsr_el[0] =3D 0; + info.si_signo =3D TARGET_SIGSEGV; + info.si_errno =3D 0; + info._sifields._sigfault._addr =3D 0; + info.si_code =3D TARGET_SEGV_MTEAERR; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + process_pending_signals(env); /* Exception return on AArch64 always clears the exclusive monitor, * so any return to running guest code implies this. diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 153bd1e9df..d55f8d1e1e 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -565,6 +565,16 @@ static void mte_check_fail(CPUARMState *env, uint32_t = desc, select =3D 0; } env->cp15.tfsr_el[el] |=3D 1 << select; +#ifdef CONFIG_USER_ONLY + /* + * Stand in for a timer irq, setting _TIF_MTE_ASYNC_FAULT, + * which then sends a SIGSEGV when the thread is next scheduled. + * This cpu will return to the main loop at the end of the TB, + * which is rather sooner than "normal". But the alternative + * is waiting until the next syscall. + */ + qemu_cpu_kick(env_cpu(env)); +#endif break; =20 default: --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613157906; cv=none; d=zohomail.com; s=zohoarc; b=LyQqrOQANVrDnTDH27rhzJGSDjDVFu5uj8Bd6im/1gipwFWAWwGJVl4OC9wSEpIDHIotaEUkKGc5oLqXQ1JcbUZP1NueMQCJpp3iMtkeRYMCDQ5lAOEKjTXKjZwRYnTJTcDcNcQRHraZ9SZS9FMPQb0DnGiZiR5y/sxZnneYqOY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613157906; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=9J8C2yhZQHwcHgCFCp6aWoyOwMetLwuIKJgxUSgtqBU=; b=VFhfMzLMGUJ/LsUquPyrkcj2FN/0/+kZsNtb+MAna+xAyYYFYSePzIyYUus4kFFjjDzcfritRlmJdJgmYtTtwiAbs54cJcgQToy9CLfeFh8IKzJhrXv83pNSIHa8dyIDL2gwSdrjuMs4s8M00NOhbV8Bf6tMoiTDePHKfXqqVdI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613157906294446.63111949894085; Fri, 12 Feb 2021 11:25:06 -0800 (PST) Received: from localhost ([::1]:58764 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAe3j-0005Oo-0a for importer@patchew.org; Fri, 12 Feb 2021 14:24:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39728) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVg-000265-IV for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:44 -0500 Received: from mail-pf1-x42b.google.com ([2607:f8b0:4864:20::42b]:42991) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVd-0007vE-Vo for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:44 -0500 Received: by mail-pf1-x42b.google.com with SMTP id w18so55752pfu.9 for ; Fri, 12 Feb 2021 10:49:41 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. [174.21.150.71]) by smtp.gmail.com with ESMTPSA id k5sm9427618pfi.31.2021.02.12.10.49.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 10:49:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9J8C2yhZQHwcHgCFCp6aWoyOwMetLwuIKJgxUSgtqBU=; b=qRetuitnv1o1D9eDfyzBO+8538xggi2yHLCojhmkqlczUGERVQIJKwlmWTTK60ltTK HOTtw82etwNGtW7p9byUO8ttF5XifWUR3RAx2AAuAgohEKlRyaFr9/EH8fx/9bO44fBS kKXnRIJhhzm0DkbJyaum3BPfgctUcqcIivVO9BKjDl2AAzNPLZ39Tu7VbMY+qMevl+ck nKs22iz1xSSfWoVtOzcSYUk72FvhW9nEgAahSVeg2RJEtxEWIurwM+MCVkId0uLox6a8 5XESAJ5wtnOoitnaQtMpxn2E9ueEl64MAFgPyalw0kPoDmrnaMDq16zU/YZeDFYhJls7 dkAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9J8C2yhZQHwcHgCFCp6aWoyOwMetLwuIKJgxUSgtqBU=; b=XUMpZX77WHIVlssmH1fikw5UHgbMlvTeNd1F0Ygo+6niop12r1DB9CfKwo2KLlYg0V n02FTLnOu0pX66PZCUQ6qtKaLOyslBHysCasaOiKRvdqIjsc51E3fgucdsucdJs9ZNY0 3crDYs5CmpwMivnde25d54abZtPVJ+k6J0Loh2ZhUHskMjylfp07ihzUcTUFczGvHMfe q4Lvw6CufTHeGzigyNCZrrJ610ZsK+54q4EMUVvYd/SO4AjmBI5+LwMTjN9XvJjFTZMZ dB6TUTGI5pFAnr7UkUHexvSOFz2ZofjZXQkpuF1+wrueUNjA6bZKjCR8eKtOpnhZm4vk mjTg== X-Gm-Message-State: AOAM532JeLsM+f8tSLvtTD1+W3FHF0k3u5AEFxQ2UJEcTn6aXIbZoc88 BYVcXLTPSMbya5Kl+b8k5wjLowowV24uEg== X-Google-Smtp-Source: ABdhPJzRzOCflwvFDNc943eDD4a3EAs5Cu1J4zxOjYv1KvMkUScWXx3t3JwLzuhkCN2H4+t1oKM11g== X-Received: by 2002:a63:1c08:: with SMTP id c8mr4482061pgc.228.1613155779723; Fri, 12 Feb 2021 10:49:39 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 29/31] target/arm: Add allocation tag storage for user mode Date: Fri, 12 Feb 2021 10:49:00 -0800 Message-Id: <20210212184902.1251044-30-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org> References: <20210212184902.1251044-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42b; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Use the now-saved PAGE_ANON and PAGE_MTE bits, and the per-page saved data. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/mte_helper.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index d55f8d1e1e..1c569336ea 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -78,8 +78,33 @@ static uint8_t *allocation_tag_mem(CPUARMState *env, int= ptr_mmu_idx, int tag_size, uintptr_t ra) { #ifdef CONFIG_USER_ONLY - /* Tag storage not implemented. */ - return NULL; + uint64_t clean_ptr =3D useronly_clean_ptr(ptr); + int flags =3D page_get_flags(clean_ptr); + uint8_t *tags; + uintptr_t index; + + if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE : PAGE_RE= AD))) { + /* SIGSEGV */ + arm_cpu_tlb_fill(env_cpu(env), ptr, ptr_size, ptr_access, + ptr_mmu_idx, false, ra); + g_assert_not_reached(); + } + + /* Require both MAP_ANON and PROT_MTE for the page. */ + if (!(flags & PAGE_ANON) || !(flags & PAGE_MTE)) { + return NULL; + } + + tags =3D page_get_target_data(clean_ptr); + if (tags =3D=3D NULL) { + size_t alloc_size =3D TARGET_PAGE_SIZE >> (LOG2_TAG_GRANULE + 1); + tags =3D page_alloc_target_data(clean_ptr, alloc_size); + assert(tags !=3D NULL); + } + + index =3D extract32(ptr, LOG2_TAG_GRANULE + 1, + TARGET_PAGE_BITS - LOG2_TAG_GRANULE - 1); + return tags + index; #else uintptr_t index; CPUIOTLBEntry *iotlbentry; --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613158283; cv=none; d=zohomail.com; s=zohoarc; b=ZrhApY0Jh8mV8zjS0O28dmMURVx0zbizxrwBic2KlBZKwE/sQKVVuhhPh/XUKVl0wNGb3h91SVocrT+uU5FcoO+JUrirWlotxFObp4dz/ulr/wOTM4513GfcsouRySbRLZBZGOc+ghaWZzxn0G5iL1Zl9/OjJo/kjHXeRO0S3n8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613158283; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=8yFMudlC6Jtq58F3MWdhR32H45GMT5rfYjMflXhCdac=; b=CQa/kPtM3BV7GVLCZ/eSHiDuXEBlYVuEecp9sMFu+A40j9y/4P4UPrkJPc5mHuZIXciV0eekX2EUj3LixX3n2mp6TcKo+W/Kj1Eh81q6lMZu4GXxnv4BgKKB/UF1f8FxZuvgtn7xpDac2pzIhaKWBS3IXWah/rffk4ohYc/3FLc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1613158283242214.12976478070777; Fri, 12 Feb 2021 11:31:23 -0800 (PST) Received: from localhost ([::1]:44652 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lAe9x-0003DI-IZ for importer@patchew.org; Fri, 12 Feb 2021 14:31:21 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39732) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lAdVh-00027T-1n for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:45 -0500 Received: from mail-pg1-x52f.google.com ([2607:f8b0:4864:20::52f]:39052) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lAdVe-0007wx-03 for qemu-devel@nongnu.org; Fri, 12 Feb 2021 13:49:44 -0500 Received: by mail-pg1-x52f.google.com with SMTP id o63so246079pgo.6 for ; Fri, 12 Feb 2021 10:49:41 -0800 (PST) Received: from localhost.localdomain (174-21-150-71.tukw.qwest.net. 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::52f; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/cpu.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 70cfcbc918..b8bc89e71f 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -209,6 +209,21 @@ static void arm_cpu_reset(DeviceState *dev) * Note that this must match useronly_clean_ptr. */ env->cp15.tcr_el[1].raw_tcr =3D (1ULL << 37); + + /* Enable MTE */ + if (cpu_isar_feature(aa64_mte, cpu)) { + /* Enable tag access, but leave TCF0 as No Effect (0). */ + env->cp15.sctlr_el[1] |=3D SCTLR_ATA0; + /* + * Exclude all tags, so that tag 0 is always used. + * This corresponds to Linux current->thread.gcr_incl =3D 0. + * + * Set RRND, so that helper_irg() will generate a seed later. + * Here in cpu_reset(), the crypto subsystem has not yet been + * initialized. + */ + env->cp15.gcr_el1 =3D 0x1ffff; + } #else /* Reset into the highest available EL */ if (arm_feature(env, ARM_FEATURE_EL3)) { --=20 2.25.1 From nobody Sun May 12 12:34:56 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1613158493; cv=none; d=zohomail.com; s=zohoarc; b=HcZC85q0IxHddKa8khwpLrUorBhfDwJOeaqhxfOM1O99u3jBOFu33z/RqxvY0RGOhCCF6z7wTAnD0CP2bS62CxaM9XVzYj4VljvJUrh1f7ENCokRCQdMCza0SyDAvy6wrY9GZ3eqTSNgTPMltzFoMY6vd9/ZcergiCuJAQzoggo= ARC-Message-Signature: i=1; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::533; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x533.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- tests/tcg/aarch64/mte.h | 60 +++++++++++++++++++++++++++++++ tests/tcg/aarch64/mte-1.c | 28 +++++++++++++++ tests/tcg/aarch64/mte-2.c | 45 +++++++++++++++++++++++ tests/tcg/aarch64/mte-3.c | 51 ++++++++++++++++++++++++++ tests/tcg/aarch64/mte-4.c | 45 +++++++++++++++++++++++ tests/tcg/aarch64/Makefile.target | 6 ++++ tests/tcg/configure.sh | 4 +++ 7 files changed, 239 insertions(+) create mode 100644 tests/tcg/aarch64/mte.h create mode 100644 tests/tcg/aarch64/mte-1.c create mode 100644 tests/tcg/aarch64/mte-2.c create mode 100644 tests/tcg/aarch64/mte-3.c create mode 100644 tests/tcg/aarch64/mte-4.c diff --git a/tests/tcg/aarch64/mte.h b/tests/tcg/aarch64/mte.h new file mode 100644 index 0000000000..141cef522c --- /dev/null +++ b/tests/tcg/aarch64/mte.h @@ -0,0 +1,60 @@ +/* + * Linux kernel fallback API definitions for MTE and test helpers. + * + * Copyright (c) 2021 Linaro Ltd + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef PR_SET_TAGGED_ADDR_CTRL +# define PR_SET_TAGGED_ADDR_CTRL 55 +#endif +#ifndef PR_TAGGED_ADDR_ENABLE +# define PR_TAGGED_ADDR_ENABLE (1UL << 0) +#endif +#ifndef PR_MTE_TCF_SHIFT +# define PR_MTE_TCF_SHIFT 1 +# define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) +# define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) +# define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) +# define PR_MTE_TAG_SHIFT 3 +#endif + +#ifndef PROT_MTE +# define PROT_MTE 0x20 +#endif + +#ifndef SEGV_MTEAERR +# define SEGV_MTEAERR 8 +# define SEGV_MTESERR 9 +#endif + +static void enable_mte(int tcf) +{ + int r =3D prctl(PR_SET_TAGGED_ADDR_CTRL, + PR_TAGGED_ADDR_ENABLE | tcf | (0xfffe << PR_MTE_TAG_SHIF= T), + 0, 0, 0); + if (r < 0) { + perror("PR_SET_TAGGED_ADDR_CTRL"); + exit(2); + } +} + +static void *alloc_mte_mem(size_t size) +{ + void *p =3D mmap(NULL, size, PROT_READ | PROT_WRITE | PROT_MTE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (p =3D=3D MAP_FAILED) { + perror("mmap PROT_MTE"); + exit(2); + } + return p; +} diff --git a/tests/tcg/aarch64/mte-1.c b/tests/tcg/aarch64/mte-1.c new file mode 100644 index 0000000000..88dcd617ad --- /dev/null +++ b/tests/tcg/aarch64/mte-1.c @@ -0,0 +1,28 @@ +/* + * Memory tagging, basic pass cases. + * + * Copyright (c) 2021 Linaro Ltd + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "mte.h" + +int main(int ac, char **av) +{ + int *p0, *p1, *p2; + long c; + + enable_mte(PR_MTE_TCF_NONE); + p0 =3D alloc_mte_mem(sizeof(*p0)); + + asm("irg %0,%1,%2" : "=3Dr"(p1) : "r"(p0), "r"(1)); + assert(p1 !=3D p0); + asm("subp %0,%1,%2" : "=3Dr"(c) : "r"(p0), "r"(p1)); + assert(c =3D=3D 0); + + asm("stg %0, [%0]" : : "r"(p1)); + asm("ldg %0, [%1]" : "=3Dr"(p2) : "r"(p0), "0"(p0)); + assert(p1 =3D=3D p2); + + return 0; +} diff --git a/tests/tcg/aarch64/mte-2.c b/tests/tcg/aarch64/mte-2.c new file mode 100644 index 0000000000..a62278276a --- /dev/null +++ b/tests/tcg/aarch64/mte-2.c @@ -0,0 +1,45 @@ +/* + * Memory tagging, basic fail cases, synchronous signals. + * + * Copyright (c) 2021 Linaro Ltd + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "mte.h" + +void pass(int sig, siginfo_t *info, void *uc) +{ + assert(info->si_code =3D=3D SEGV_MTESERR); + exit(0); +} + +int main(int ac, char **av) +{ + struct sigaction sa; + int *p0, *p1, *p2; + long excl =3D 1; + + enable_mte(PR_MTE_TCF_SYNC); + p0 =3D alloc_mte_mem(sizeof(*p0)); + + /* Create two differently tagged pointers. */ + asm("irg %0,%1,%2" : "=3Dr"(p1) : "r"(p0), "r"(excl)); + asm("gmi %0,%1,%0" : "+r"(excl) : "r" (p1)); + assert(excl !=3D 1); + asm("irg %0,%1,%2" : "=3Dr"(p2) : "r"(p0), "r"(excl)); + assert(p1 !=3D p2); + + /* Store the tag from the first pointer. */ + asm("stg %0, [%0]" : : "r"(p1)); + + *p1 =3D 0; + + memset(&sa, 0, sizeof(sa)); + sa.sa_sigaction =3D pass; + sa.sa_flags =3D SA_SIGINFO; + sigaction(SIGSEGV, &sa, NULL); + + *p2 =3D 0; + + abort(); +} diff --git a/tests/tcg/aarch64/mte-3.c b/tests/tcg/aarch64/mte-3.c new file mode 100644 index 0000000000..424ea685c2 --- /dev/null +++ b/tests/tcg/aarch64/mte-3.c @@ -0,0 +1,51 @@ +/* + * Memory tagging, basic fail cases, asynchronous signals. + * + * Copyright (c) 2021 Linaro Ltd + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "mte.h" + +void pass(int sig, siginfo_t *info, void *uc) +{ + assert(info->si_code =3D=3D SEGV_MTEAERR); + exit(0); +} + +int main(int ac, char **av) +{ + struct sigaction sa; + long *p0, *p1, *p2; + long excl =3D 1; + + enable_mte(PR_MTE_TCF_ASYNC); + p0 =3D alloc_mte_mem(sizeof(*p0)); + + /* Create two differently tagged pointers. */ + asm("irg %0,%1,%2" : "=3Dr"(p1) : "r"(p0), "r"(excl)); + asm("gmi %0,%1,%0" : "+r"(excl) : "r" (p1)); + assert(excl !=3D 1); + asm("irg %0,%1,%2" : "=3Dr"(p2) : "r"(p0), "r"(excl)); + assert(p1 !=3D p2); + + /* Store the tag from the first pointer. */ + asm("stg %0, [%0]" : : "r"(p1)); + + *p1 =3D 0; + + memset(&sa, 0, sizeof(sa)); + sa.sa_sigaction =3D pass; + sa.sa_flags =3D SA_SIGINFO; + sigaction(SIGSEGV, &sa, NULL); + + /* + * Signal for async error will happen eventually. + * For a real kernel this should be after the next IRQ (e.g. timer). + * For qemu linux-user, we kick the cpu and exit at the next TB. + * In either case, loop until this happens (or killed by timeout). + * For extra sauce, yield, producing EXCP_YIELD to cpu_loop(). + */ + asm("str %0, [%0]; yield" : : "r"(p2)); + while (1); +} diff --git a/tests/tcg/aarch64/mte-4.c b/tests/tcg/aarch64/mte-4.c new file mode 100644 index 0000000000..a8cc9f5984 --- /dev/null +++ b/tests/tcg/aarch64/mte-4.c @@ -0,0 +1,45 @@ +/* + * Memory tagging, re-reading tag checks. + * + * Copyright (c) 2021 Linaro Ltd + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "mte.h" + +void __attribute__((noinline)) tagset(void *p, size_t size) +{ + size_t i; + for (i =3D 0; i < size; i +=3D 16) { + asm("stg %0, [%0]" : : "r"(p + i)); + } +} + +void __attribute__((noinline)) tagcheck(void *p, size_t size) +{ + size_t i; + void *c; + + for (i =3D 0; i < size; i +=3D 16) { + asm("ldg %0, [%1]" : "=3Dr"(c) : "r"(p + i), "0"(p)); + assert(c =3D=3D p); + } +} + +int main(int ac, char **av) +{ + size_t size =3D getpagesize() * 4; + long excl =3D 1; + int *p0, *p1; + + enable_mte(PR_MTE_TCF_ASYNC); + p0 =3D alloc_mte_mem(size); + + /* Tag the pointer. */ + asm("irg %0,%1,%2" : "=3Dr"(p1) : "r"(p0), "r"(excl)); + + tagset(p1, size); + tagcheck(p1, size); + + return 0; +} diff --git a/tests/tcg/aarch64/Makefile.target b/tests/tcg/aarch64/Makefile= .target index d7d33e293c..bf53ad0087 100644 --- a/tests/tcg/aarch64/Makefile.target +++ b/tests/tcg/aarch64/Makefile.target @@ -35,6 +35,12 @@ endif # bti-2 tests PROT_BTI, so no special compiler support required. AARCH64_TESTS +=3D bti-2 =20 +# MTE Tests +ifneq ($(DOCKER_IMAGE)$(CROSS_CC_HAS_ARMV8_MTE),) +AARCH64_TESTS +=3D mte-1 mte-2 mte-3 mte-4 +mte-%: CFLAGS +=3D -march=3Darmv8.5-a+memtag +endif + # Semihosting smoke test for linux-user AARCH64_TESTS +=3D semihosting run-semihosting: semihosting diff --git a/tests/tcg/configure.sh b/tests/tcg/configure.sh index e1b70e25f2..ba8ac9a93e 100755 --- a/tests/tcg/configure.sh +++ b/tests/tcg/configure.sh @@ -244,6 +244,10 @@ for target in $target_list; do -mbranch-protection=3Dstandard -o $TMPE $TMPC; then echo "CROSS_CC_HAS_ARMV8_BTI=3Dy" >> $config_target_mak fi + if do_compiler "$target_compiler" $target_compiler_cflags \ + -march=3Darmv8.5-a+memtag -o $TMPE $TMPC; then + echo "CROSS_CC_HAS_ARMV8_MTE=3Dy" >> $config_target_mak + fi ;; esac =20 --=20 2.25.1