From nobody Wed Apr 24 03:03:25 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=1617399822; cv=none; d=zohomail.com; s=zohoarc; b=PzFj/xUoeKoOUyqseRhiLJzueDEo1CFVDwi30zH5dbEgIqHwNPgAlV28VaLWJw7s3i1GZ352fixyckJ+zfhYYix5FeLDaPAsFcTqKKzq3r6psmxVeg/MjXKlNgTyjNIHKtyT3DJIsTsuBMtWKWPLVLluPuagyvZ8inCQ0wHvrfQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617399822; 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=N2mWsQLvcKb8vumKiyJlzF6R6pJ22LkeGfPO+NZbgZA=; b=SlQJDmQmWIfC4DK8B+/Y7Yo99cdFWGvyJiSwTMR3iAp05V7xphUVk8uPQdB25DyDdkIIn9M6tStslFzWNdCuDPcg86aLqAeaRKCGNhWZybFP7mZg7XcsClkLCk8LNo1YEUZqFm62QkbqEvY6B9fq9dVqYCcRFN5GZwz6q0Rio3g= 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 1617399822786832.2656940317164; Fri, 2 Apr 2021 14:43:42 -0700 (PDT) Received: from localhost ([::1]:38086 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSRZs-0001zN-Tm for importer@patchew.org; Fri, 02 Apr 2021 17:43:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35584) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYg-0000EO-Uf for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:27 -0400 Received: from mail-pj1-x1030.google.com ([2607:f8b0:4864:20::1030]:52206) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYd-0007ey-RZ for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:26 -0400 Received: by mail-pj1-x1030.google.com with SMTP id s21so3243943pjq.1 for ; Fri, 02 Apr 2021 14:42:22 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:21 -0700 (PDT) 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=N2mWsQLvcKb8vumKiyJlzF6R6pJ22LkeGfPO+NZbgZA=; b=jRGIYKyktAmAMtRjWC//5Lo6aThqkDvCSnkbMxtOTMqUXFcsCxr14G09idSVY4ea5H 1ICE8SDyLt0vYS4CHKGuz6qWwVaeTtf53nX5QibSgeAUlIWpjub4NTqpN3RZWwPiiORJ Xf2xR7tUHIomWxLb02inIKLEOW/20x7LX3ph+FHbcN2VOFnpe2TY3Ul6NPRruE7z1B4h 0NHTeN9/4np6k4tY3VDhqZPiMP/UAd/lB8YFWjoT3jD4wre1UJfLUZArO5Hp6C/w/7NT SH/9qh5Xr/TARs+HegXkZfXWrvNZnEzdjP6vrIq9jfua4K96Q/0ASy0rD6mZNjBgEKm8 2/gA== 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=N2mWsQLvcKb8vumKiyJlzF6R6pJ22LkeGfPO+NZbgZA=; b=C3pPnqIB1hGuZ8rkzWG8EDP2o1natw8lqvUvbbTDbvXZgKnMleXTTd+HtfsG5xjPRX 5xGQDvwxtQAJQy2k1CG2H4iqry3t5NHlDDbddEF8SqNmLoM61dfLFI2M9oXBrJLFj3pr QIosE10ZJNVwJFtVYiO23osmdnbtuJrO2+ry/qyF0e4T4+TNbetsNUwIDGpwcb33pge+ dRbk33oWrltjfzERx3c4jmFQ4oCDVtEbIo0wJh8tVLqLhZ2s2ymwIxeWTBN3kHWEeOJo iQiXjc6OwZzyY+b14MxHUV7TRseuXTklpU+pMFP6ofM/y9bDZgh/K80H8jMwmD1p1bz0 CqlQ== X-Gm-Message-State: AOAM533wgzBHAX2+hNfJbLuL404VTjbPoI6lqZDZD12TgaJjMbfaumxW BSPkmuorNt+pevsxyH6pNzOA9f+bEcb+rg== X-Google-Smtp-Source: ABdhPJxZgrmpX6sBdN5g32JeLfGGYPOUuAXSfr5TztW145XTW5R/iwqyewlmhiA3DiJlbbSFapRemw== X-Received: by 2002:a17:90a:b108:: with SMTP id z8mr1310978pjq.77.1617399741751; Fri, 02 Apr 2021 14:42:21 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 01/11] accel/tcg: Preserve PAGE_ANON when changing page permissions Date: Fri, 2 Apr 2021 14:42:07 -0700 Message-Id: <20210402214217.422585-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::1030; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1030.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: qemu-arm@nongnu.org, Stephen Long 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" Using mprotect() to change PROT_* does not change the MAP_ANON previously set with mmap(). Our linux-user version of MTE only works with MAP_ANON pages, so losing PAGE_ANON caused MTE to stop working. Reported-by: Stephen Long Signed-off-by: Richard Henderson --- tests/tcg/aarch64/mte.h | 3 ++- accel/tcg/translate-all.c | 9 +++++-- tests/tcg/aarch64/mte-6.c | 43 +++++++++++++++++++++++++++++++ tests/tcg/aarch64/Makefile.target | 2 +- 4 files changed, 53 insertions(+), 4 deletions(-) create mode 100644 tests/tcg/aarch64/mte-6.c diff --git a/tests/tcg/aarch64/mte.h b/tests/tcg/aarch64/mte.h index 141cef522c..0805676b11 100644 --- a/tests/tcg/aarch64/mte.h +++ b/tests/tcg/aarch64/mte.h @@ -48,7 +48,8 @@ static void enable_mte(int tcf) } } =20 -static void *alloc_mte_mem(size_t size) +static void * alloc_mte_mem(size_t size) __attribute__((unused)); +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); diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index f32df8b240..ba6ab09790 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -2714,6 +2714,8 @@ void page_set_flags(target_ulong start, target_ulong = end, int flags) a missing call to h2g_valid. */ assert(end - 1 <=3D GUEST_ADDR_MAX); assert(start < end); + /* Only set PAGE_ANON with new mappings. */ + assert(!(flags & PAGE_ANON) || (flags & PAGE_RESET)); assert_memory_lock(); =20 start =3D start & TARGET_PAGE_MASK; @@ -2737,11 +2739,14 @@ 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) { + if (reset_target_data) { g_free(p->target_data); p->target_data =3D NULL; + p->flags =3D flags; + } else { + /* Using mprotect on a page does not change MAP_ANON. */ + p->flags =3D (p->flags & PAGE_ANON) | flags; } - p->flags =3D flags; } } =20 diff --git a/tests/tcg/aarch64/mte-6.c b/tests/tcg/aarch64/mte-6.c new file mode 100644 index 0000000000..60d51d18be --- /dev/null +++ b/tests/tcg/aarch64/mte-6.c @@ -0,0 +1,43 @@ +#include "mte.h" + +void pass(int sig, siginfo_t *info, void *uc) +{ + assert(info->si_code =3D=3D SEGV_MTESERR); + exit(0); +} + +int main(void) +{ + enable_mte(PR_MTE_TCF_SYNC); + + void *brk =3D sbrk(16); + if (brk =3D=3D (void *)-1) { + perror("sbrk"); + return 2; + } + + if (mprotect(brk, 16, PROT_READ | PROT_WRITE | PROT_MTE)) { + perror("mprotect"); + return 2; + } + + int *p1, *p2; + long excl =3D 1; + + asm("irg %0,%1,%2" : "=3Dr"(p1) : "r"(brk), "r"(excl)); + asm("gmi %0,%1,%0" : "+r"(excl) : "r"(p1)); + asm("irg %0,%1,%2" : "=3Dr"(p2) : "r"(brk), "r"(excl)); + asm("stg %0,[%0]" : : "r"(p1)); + + *p1 =3D 0; + + struct sigaction sa; + 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/Makefile.target b/tests/tcg/aarch64/Makefile= .target index 56e48f4b34..05b2622bfc 100644 --- a/tests/tcg/aarch64/Makefile.target +++ b/tests/tcg/aarch64/Makefile.target @@ -37,7 +37,7 @@ 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 +AARCH64_TESTS +=3D mte-1 mte-2 mte-3 mte-4 mte-6 mte-%: CFLAGS +=3D -march=3Darmv8.5-a+memtag endif =20 --=20 2.25.1 From nobody Wed Apr 24 03:03:25 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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[216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:22 -0700 (PDT) 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=fmCgzHtzk5qDGe2eGqNAc4vF9R/bc/UzkhnNYf8s1aw=; b=hLAgx1JVOhYAcJL9otyWbmwpWTmOyjSybBwxjW5y6nQJNKCYJEFEm4yPcTfRTdd8ch 76w/7QBUQxbJLa/NbOAG4Lzq7UdeJ1yHFOCcAVANZx/IxUXx5p9m00yu5S1+LeqcvfT1 LNzl+goP+LXE8QlqdjLnlbmh7f9lqnjm2HGwgxnB2CggfNamhp/UZ0lfJu+ixkiY3nfN qNWh2C6XfCJS5s4rtotaUIvKfaRpUigVs4xlZWAgxwV+U8TPjpGyh9CbWebluUfeQyTy dqBol5D/NhtnsIJL/BfK4KXYnsCKrexcK8MQAtKBPNOqjTiCGxXVk6EYWJFgm6TvN1fF Mnfg== 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=fmCgzHtzk5qDGe2eGqNAc4vF9R/bc/UzkhnNYf8s1aw=; b=sXhHsj7nKanO9K3dXbixOISU7vD49YtyYCo/gLaB/xILfKysf5OVjdlGfyTDecULoD G8YzJb+ACEOHJW4QbNAJ8/YRW6gHm5OMZIjOLm+F2fT7UdIsZ6zNGvRN8tFnBWw6WGgE LSNB/QJW6DFH71XGra/cuZctf7pOEQeNJxntfKH06LCITgRAnht5/z/iUqiptznOLBBE SKhyElRFZXaSIzVx9lqtNAlA1sT5QcDGpaJ8IIftFADo31z7ySt4WXlIKQtrgBh6ivzB OElIot+G5Y7aTwNFVEjskTVZSI0xvMlNIR2yorhJjK8Xe3pZHiegDSuyc7bV/S2rwLgS RbEg== X-Gm-Message-State: AOAM532rwoVaL33cPrpZRCjq5NnfxCMm2lyfwlOBa4pEaJBE3BFoP5Ws IAiPwTPF/bwGAeSvzNbP2QFYYyYOlIN4ng== X-Google-Smtp-Source: ABdhPJwkSmgZpzR82SxsC1zrzJydItWP6Fn6ch9oV0ymybT/wzID6IdL5NKgttKev318kcCO0Lzq8g== X-Received: by 2002:a17:90a:1f49:: with SMTP id y9mr16122803pjy.69.1617399742926; Fri, 02 Apr 2021 14:42:22 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 02/11] target/arm: Check PAGE_WRITE_ORG for MTE writeability Date: Fri, 2 Apr 2021 14:42:08 -0700 Message-Id: <20210402214217.422585-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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=unavailable 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: qemu-arm@nongnu.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 can remove PAGE_WRITE when (internally) marking a page read-only because it contains translated code. This can be triggered by tests/tcg/aarch64/bti-2, after having serviced SIGILL trampolines on the stack. Signed-off-by: Richard Henderson --- target/arm/mte_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 0bbb9ec346..8be17e1b70 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -83,7 +83,7 @@ static uint8_t *allocation_tag_mem(CPUARMState *env, int = ptr_mmu_idx, uint8_t *tags; uintptr_t index; =20 - if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE : PAGE_RE= AD))) { + if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE_ORG : PAG= E_READ))) { /* SIGSEGV */ arm_cpu_tlb_fill(env_cpu(env), ptr, ptr_size, ptr_access, ptr_mmu_idx, false, ra); --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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=1617399983; cv=none; d=zohomail.com; s=zohoarc; b=nTpvxs6o7JzdMQOKHM8J2OfSakxA5lKROTQy0BBFK/MX2Ny8IeNKd5XAInhsYV/PKr9rgUnQ0RmsKirdWQyO5JcVfrW5y/XtoG9H35d21wwepcZmJ5XYZBLRJRL0r55BNJMP9WO44o7szjgwBJSjfjdlYbnXb034zEBkTHl5AVw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617399983; 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=y+w0gMMCEBK2Vtlb1FFYoCbN7uhYY0HOFcCe/poCdwU=; b=YVtiUBYqwJ80NC6E6asEMI4jnO4K7R+csbBcLaT7NsCB0nA2wzG5aeyI9+YSTDZjaCVWXyaTucL1e//VJXVdIwUwVJHfENIsg09oI67lx3xc24kt0ymKmVcUL60w1H66b8kUGTI38ZhrG1gHBT3TUGn4USBNQu2zyNM51ltCZ0I= 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 1617399983353353.82043178364415; Fri, 2 Apr 2021 14:46:23 -0700 (PDT) Received: from localhost ([::1]:47876 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSRcU-0005ti-A1 for importer@patchew.org; Fri, 02 Apr 2021 17:46:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35670) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYk-0000OW-W2 for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:31 -0400 Received: from mail-pl1-x62d.google.com ([2607:f8b0:4864:20::62d]:37537) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYf-0007gU-Gr for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:30 -0400 Received: by mail-pl1-x62d.google.com with SMTP id h20so3029082plr.4 for ; Fri, 02 Apr 2021 14:42:25 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:23 -0700 (PDT) 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=y+w0gMMCEBK2Vtlb1FFYoCbN7uhYY0HOFcCe/poCdwU=; b=t7WSYds/LTRohORLyMGy3J20JQj6o+/XqYc5jd3CmRAcK/YnHQIavA3PqnDAJZLN4a euEyEYO65G43C1xm3Ikkyn6r2F1Xm2DiaCwl83fkHb/qkOpndv80D1kltqePBLNQ/x8R gaFR0G+FV2yqh6oo4RF/dK09o7s2YdoNiU4TO7mcWBy/G7oE1+7gGzRb6vKk8f+ofFUy 9cquZXaTsPNt52+2PWU/l9rum6Wg3kXny1A3R+/6Z7E712R1LQ/3a7OK53QXMRq8y6wr FBOp1earr0nnL9H/LepiRSUws/p0RT3z8Z4sY69zTFrA7GqersuFHBc29dNIjOfUug8e Ddkw== 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=y+w0gMMCEBK2Vtlb1FFYoCbN7uhYY0HOFcCe/poCdwU=; b=DFkZ/Z5B5Ha8KXX8lwpHgkd3mE9eKEmuJ/OQ51BDSGOuyJwW8I0F6V5Peb7+NPji8z VJf1ADgMorORqHzazJk4/aeXfoVR0inotBxJx/FH0vmNrWlUcHtnNurz5JrO6VewA9B+ 5Z2ZQmYcrBeoVPXiICo6fqqMkxXwECfFfqg6dWqUG3j1eIhpQknI6/c8Cslm8CbQRw7r b2C6G9XDgFuDfZLebrsyMmQbV/6KZCzoqWxPzCkzzWciGCGlv5VD3q9xh6BZTqba268C aSlEsZ6AoX5l3L3Im9f7NKv2XQKkMtTGT/6yYFJBdOiCHr9Dm0ifeCXb5TWLpZ54FHbg Z+Og== X-Gm-Message-State: AOAM530WJgsqZhMPfABjnMKZFjOqRtUOrAGskYThneEnKiaxTeDaeSRG vqnSwq666CiLDK3RzxEAJYjgsWbclN/q0A== X-Google-Smtp-Source: ABdhPJz3g/ibX7R6/3JM8/nuPIQemcmmnaDd8tm/9cr+rcZz0N38kv1+UzSHGVE2nfZoWWTr+ST+PQ== X-Received: by 2002:a17:90a:e542:: with SMTP id ei2mr15393080pjb.134.1617399744158; Fri, 02 Apr 2021 14:42:24 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 03/11] target/arm: Fix unaligned mte checks for mte_checkN Date: Fri, 2 Apr 2021 14:42:09 -0700 Message-Id: <20210402214217.422585-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::62d; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62d.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=unavailable 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: qemu-arm@nongnu.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 incorrectly assuming that only the first byte of an MTE access is checked against the tags. But per the ARM, unaligned accesses are pre-decomposed into single-byte accesses. So by the time we reach the actual MTE check in the ARM pseudocode, all accesses are aligned. Therefore, the first failure is always either the first byte of the access, or the first byte of the granule. Buglink: https://bugs.launchpad.net/bugs/1921948 Signed-off-by: Richard Henderson --- target/arm/mte_helper.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 8be17e1b70..473d84cee2 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -757,10 +757,10 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_t ra) { int mmu_idx, ptr_tag, bit55; - uint64_t ptr_last, ptr_end, prev_page, next_page; + uint64_t ptr_last, prev_page, next_page; uint64_t tag_first, tag_end; uint64_t tag_byte_first, tag_byte_end; - uint32_t esize, total, tag_count, tag_size, n, c; + uint32_t total, tag_count, tag_size, n, c; uint8_t *mem1, *mem2; MMUAccessType type; =20 @@ -779,12 +779,10 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, =20 mmu_idx =3D FIELD_EX32(desc, MTEDESC, MIDX); type =3D FIELD_EX32(desc, MTEDESC, WRITE) ? MMU_DATA_STORE : MMU_DATA_= LOAD; - esize =3D FIELD_EX32(desc, MTEDESC, ESIZE); total =3D FIELD_EX32(desc, MTEDESC, TSIZE); =20 /* Find the addr of the end of the access, and of the last element. */ - ptr_end =3D ptr + total; - ptr_last =3D ptr_end - esize; + ptr_last =3D ptr + total - 1; =20 /* Round the bounds to the tag granule, and compute the number of tags= . */ tag_first =3D QEMU_ALIGN_DOWN(ptr, TAG_GRANULE); @@ -817,7 +815,7 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, =20 tag_size =3D (tag_byte_end - next_page) / (2 * TAG_GRANULE); mem2 =3D allocation_tag_mem(env, mmu_idx, next_page, type, - ptr_end - next_page, + ptr_last - next_page + 1, MMU_DATA_LOAD, tag_size, ra); =20 /* @@ -838,15 +836,13 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, } =20 /* - * If we failed, we know which granule. Compute the element that - * is first in that granule, and signal failure on that element. + * If we failed, we know which granule. For the first granule, the + * failure address is @ptr, the first byte accessed. Otherwise the + * failure address is the first byte of the nth granule. */ if (unlikely(n < tag_count)) { - uint64_t fail_ofs; - - fail_ofs =3D tag_first + n * TAG_GRANULE - ptr; - fail_ofs =3D ROUND_UP(fail_ofs, esize); - mte_check_fail(env, desc, ptr + fail_ofs, ra); + uint64_t fault =3D (n =3D=3D 0 ? ptr : tag_first + n * TAG_GRANULE= ); + mte_check_fail(env, desc, fault, ra); } =20 done: --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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=1617399824; cv=none; d=zohomail.com; s=zohoarc; b=boSrnOgJxqzCgPCnSNwXpkPUI3Fu+5MWOC2IPfaZIZzi8ZpGa5JavQ2A4VQblehljcNMWeiXOZlvlCSj7HbPk4O2VnmHNk1FPArOo/Ppe/dRS6R9Ub3wprJiaLyce51j8Duz+QlPkZ3FZ6S6LmcAgTyD1Xvs41PI+XaV0XovJJs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617399824; 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=OVt5iR1dmccHY0b49ovqyPgeianDpRHBCkX5yRWRcH8=; b=DRa4jn5sEtlundlID/NPGEZAevET4nYtzM2vCAIkkanal+E2ARiSl3tCAkLsnz+vI7l/B6jdsgsWTwiExkRksgvceq/BwqWRaJFaNfuRYgU2OEBV74c7unhbLakKANE5TFzHObsyUE3HFjERoupZZMHd1FnwqeDBwX/OM7f++xo= 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 1617399824221687.6365030866701; Fri, 2 Apr 2021 14:43:44 -0700 (PDT) Received: from localhost ([::1]:38306 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSRZv-00024s-4P for importer@patchew.org; Fri, 02 Apr 2021 17:43:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35628) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYi-0000I1-Rl for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:28 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]:33381) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYg-0007h7-M4 for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:28 -0400 Received: by mail-pl1-x62e.google.com with SMTP id f17so3051394plr.0 for ; Fri, 02 Apr 2021 14:42:26 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:24 -0700 (PDT) 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=OVt5iR1dmccHY0b49ovqyPgeianDpRHBCkX5yRWRcH8=; b=vwN9kpi0tXz2ObvJkmlLlmFzhTVZA7Gf7gL+20qLlfZUh1SSBH8hB/iQWbCAivgbH1 0m9tF9D0fcO3UqXeZXj08+GH9LJqEFEfcTAhY+ldMMCHqkfWOnNlMdPIo3hK8rx19jyJ dGTfwul7XufzyOwkHspRFMjxbK11Q3pSZI8nIapDdpwuvhgn2AhXZXSlOPFAHoHs7kpQ nmLX33E/D6ndpoHTV7VjXCU3C58DBJf6G6gVe89VX14Hs6OHyJwfEfyD3zElmGDR/NYv FDANZG3pU4CIwUmO7REKa1gLK+TFkiLGDeR+KT8DEo3fMhMZRTIbYgIQZvsXyHCYu+gh JgVw== 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=OVt5iR1dmccHY0b49ovqyPgeianDpRHBCkX5yRWRcH8=; b=dmQfOjtm+PKHHwrXKkbg0VoEAPpLQ4jaFAwiSOf4x9AM/DVyMDMV7K/wD6H1f2Ot4u eWANCyQWnpMVgqQjjLDvCzpcz9p41amF0+MGeFfYVt8LDnUsmfd4MlqTt2xdr/Ge096G QU89P9tcFBtkhfiWYzgTbo94PXLUikxE6f9JmQNcETUzeCsL0ESVnyXq1t5n+eHRaLPU nvKjcSxfHG3uiSQ87mpw5w5yAbraSS3+CQZgNCuTLrb8k3W4m6Gc4Th35gdtqe1XwehM D5FCIN4nBL546vMGzDkpTGnMvPxsHIiYJd2po6/fKIKo9ERcdI2wQN/RH/jPG09r56Ah bK2g== X-Gm-Message-State: AOAM533eae/xtuzP810lab2dRDRw1RPjXfF0sVOp/x0v3xwy+ed1FOoJ 7wKl+vhcj+OYg36dnd+opefaVeO6K/41ig== X-Google-Smtp-Source: ABdhPJy4xUoBjc2z25BJXGO/A7nlYKFymk7Tk4Ob+F8sXlJ3sTjU3DyXrhMCsA0GNffB+1l50AiKoA== X-Received: by 2002:a17:90a:990a:: with SMTP id b10mr15548299pjp.178.1617399745303; Fri, 02 Apr 2021 14:42:25 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 04/11] target/arm: Split out mte_probe_int Date: Fri, 2 Apr 2021 14:42:10 -0700 Message-Id: <20210402214217.422585-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::62e; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62e.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=unavailable 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: qemu-arm@nongnu.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" Split out a helper function from mte_checkN to perform all of the checking and address manpulation. So far, just use this in mte_checkN itself. Signed-off-by: Richard Henderson --- target/arm/mte_helper.c | 52 +++++++++++++++++++++++++++++++---------- 1 file changed, 40 insertions(+), 12 deletions(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 473d84cee2..179846b463 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -753,33 +753,45 @@ static int checkN(uint8_t *mem, int odd, int cmp, int= count) return n; } =20 -uint64_t mte_checkN(CPUARMState *env, uint32_t desc, - uint64_t ptr, uintptr_t ra) +/* + * mte_probe_int: + * @env: CPU environment + * @desc: MTEDESC descriptor + * @ptr: virtual address of the base of the access + * @fault: return virtual address of the first check failure + * + * Internal routine for both mte_probe and mte_check. + * Return zero on failure, filling in *fault. + * Return negative on trivial success for tbi disabled. + * Return positive on success with tbi enabled. + */ +static int mte_probe_int(CPUARMState *env, uint32_t desc, uint64_t ptr, + uintptr_t ra, uint32_t total, uint64_t *fault) { int mmu_idx, ptr_tag, bit55; uint64_t ptr_last, prev_page, next_page; uint64_t tag_first, tag_end; uint64_t tag_byte_first, tag_byte_end; - uint32_t total, tag_count, tag_size, n, c; + uint32_t tag_count, tag_size, n, c; uint8_t *mem1, *mem2; MMUAccessType type; =20 bit55 =3D extract64(ptr, 55, 1); + *fault =3D ptr; =20 /* If TBI is disabled, the access is unchecked, and ptr is not dirty. = */ if (unlikely(!tbi_check(desc, bit55))) { - return ptr; + return -1; } =20 ptr_tag =3D allocation_tag_from_addr(ptr); =20 if (tcma_check(desc, bit55, ptr_tag)) { - goto done; + return 1; } =20 mmu_idx =3D FIELD_EX32(desc, MTEDESC, MIDX); type =3D FIELD_EX32(desc, MTEDESC, WRITE) ? MMU_DATA_STORE : MMU_DATA_= LOAD; - total =3D FIELD_EX32(desc, MTEDESC, TSIZE); =20 /* Find the addr of the end of the access, and of the last element. */ ptr_last =3D ptr + total - 1; @@ -803,7 +815,7 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, mem1 =3D allocation_tag_mem(env, mmu_idx, ptr, type, total, MMU_DATA_LOAD, tag_size, ra); if (!mem1) { - goto done; + return 1; } /* Perform all of the comparisons. */ n =3D checkN(mem1, ptr & TAG_GRANULE, ptr_tag, tag_count); @@ -829,23 +841,39 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, } if (n =3D=3D c) { if (!mem2) { - goto done; + return 1; } n +=3D checkN(mem2, 0, ptr_tag, tag_count - c); } } =20 + if (likely(n =3D=3D tag_count)) { + return 1; + } + /* * If we failed, we know which granule. For the first granule, the * failure address is @ptr, the first byte accessed. Otherwise the * failure address is the first byte of the nth granule. */ - if (unlikely(n < tag_count)) { - uint64_t fault =3D (n =3D=3D 0 ? ptr : tag_first + n * TAG_GRANULE= ); - mte_check_fail(env, desc, fault, ra); + if (n > 0) { + *fault =3D tag_first + n * TAG_GRANULE; } + return 0; +} =20 - done: +uint64_t mte_checkN(CPUARMState *env, uint32_t desc, + uint64_t ptr, uintptr_t ra) +{ + uint64_t fault; + uint32_t total =3D FIELD_EX32(desc, MTEDESC, TSIZE); + int ret =3D mte_probe_int(env, desc, ptr, ra, total, &fault); + + if (unlikely(ret =3D=3D 0)) { + mte_check_fail(env, desc, fault, ra); + } else if (ret < 0) { + return ptr; + } return useronly_clean_ptr(ptr); } =20 --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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=1617399964; cv=none; d=zohomail.com; s=zohoarc; b=ZnNbbz0Iv5Gbuzge56LByBrWj8Dk/xA+xzFZ9G2AJBfTfWjR+gELBHbGPpZrhIsDaS7oUi43Tus80wkgGKq3iQGwoG6SvIDvTX9BoQUIOpGsXyU71yxHtGjB1F4RIhM8hyhWvEKZZ4MbkrMTs4c9xCX+4slPxE5D92UeNKoQ560= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617399964; 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=cOmrmLleIvfS9SAvRM+rFaIFvSakRJgmx9iPS/gIMnk=; b=N85NMQcyh7yug9rBYdTTqRVEI4ra3AhpKBynaBUmKu1RXz5OHm4Fi2mA7r6pYHDmL6T+U3LhAHFTSEJ5e78OejLTg94uLuCxgr8W5r66/0v9QLhdT3of6wItqCAwHaeg4BmScGwhWzWSsYzwzbtum1QccZqcqIp+nmUMor5oZLU= 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 1617399964877391.634118002754; Fri, 2 Apr 2021 14:46:04 -0700 (PDT) Received: from localhost ([::1]:46836 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSRcB-0005Sq-QH for importer@patchew.org; Fri, 02 Apr 2021 17:46:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35634) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYj-0000Kj-MH for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:29 -0400 Received: from mail-pj1-x1030.google.com ([2607:f8b0:4864:20::1030]:35373) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYh-0007hw-Q3 for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:29 -0400 Received: by mail-pj1-x1030.google.com with SMTP id il9-20020a17090b1649b0290114bcb0d6c2so5142246pjb.0 for ; Fri, 02 Apr 2021 14:42:27 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:26 -0700 (PDT) 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=cOmrmLleIvfS9SAvRM+rFaIFvSakRJgmx9iPS/gIMnk=; b=GXWN0eHleJIOYPqqVw7XDwTogr0Wie/tRM2bVSFJvXYXKaK8EVi+Kj53UZVuB95CpT rnwEnCWWZGzt/R1XBOa1kGBn26Jnid1adpFlcbwp9dUDx9FfyZe9p1zNgIVq5g7ZzPaw A3AGJ9s+uFUwcdJQNRR5pdLhMTHX3+duC2KwelAbtPl4aao52GNVFWDrZn6AfZRxQUe0 43x0GK05Lt7f4EzxNQFhIjshN9ueEITLWCa67krdf3N/rWeXm1P3rf/daAZn+lkAPGes Mgz6ah4hPvTVT+hoKZwp2jl6KrpiLadfgqM3FqACuNayIy3xnePZonMjQ0spl/kAoNNa NNag== 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=cOmrmLleIvfS9SAvRM+rFaIFvSakRJgmx9iPS/gIMnk=; b=dm1fv3g8XEqieRf4TXzzIsW3Qcmk0ipuogOp103gWpT1K91Hw62QQ1nbwibi2FNYa5 /LMggETeD+ra9nwmvsaXAjw5Gak84gA9cj/2vRNWp+FjoYAcovQKJqJM4Ifnkr6GXLgB GbdwRlrwUAMjSRt1PzeK/4iO2FuEMeRqPrG8mBB5cfib3Z0rcPcRR7tedvz+f7lnkG+/ IZF+hHl/OxYBmei/DKNyPda+Bf3K5A3/xg30K7el4EklWKD0lTNb8UhUqta18xiqH09/ i8UKTE22JxyaY7BtuNLztWOg59AIHvOVbdkO1LV7BoXTQXLkpISMUrANgH96CoQruK+r +PVQ== X-Gm-Message-State: AOAM533XZ40SMTTAmkY6QDkGFW26z8fRijuwl/xCOJPrdR3Npqp9+kdV 6kvvkimDw+33dfgUbQ7wjC521B85RM5FoQ== X-Google-Smtp-Source: ABdhPJxpzJNXDQwsEdKrJ0R0m+/ngICsWHyxgtXLBd04ZmaFtFEIuKZajwCz6NfU8KaL0MiVTSiaxw== X-Received: by 2002:a17:902:ce8d:b029:e4:bc38:c4 with SMTP id f13-20020a170902ce8db02900e4bc3800c4mr14144501plg.48.1617399746604; Fri, 02 Apr 2021 14:42:26 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 05/11] target/arm: Fix unaligned checks for mte_check1, mte_probe1 Date: Fri, 2 Apr 2021 14:42:11 -0700 Message-Id: <20210402214217.422585-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::1030; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1030.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: qemu-arm@nongnu.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 incorrectly assuming that only the first byte of an MTE access is checked against the tags. But per the ARM, unaligned accesses are pre-decomposed into single-byte accesses. So by the time we reach the actual MTE check in the ARM pseudocode, all accesses are aligned. We cannot tell a priori whether or not a given scalar access is aligned, therefore we must at least check. Use mte_probe_int, which is already set up for checking multiple granules. Buglink: https://bugs.launchpad.net/bugs/1921948 Signed-off-by: Richard Henderson --- target/arm/mte_helper.c | 109 +++++++++++++--------------------------- 1 file changed, 35 insertions(+), 74 deletions(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 179846b463..6fcfaf5c9e 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -617,80 +617,6 @@ static void mte_check_fail(CPUARMState *env, uint32_t = desc, } } =20 -/* - * Perform an MTE checked access for a single logical or atomic access. - */ -static bool mte_probe1_int(CPUARMState *env, uint32_t desc, uint64_t ptr, - uintptr_t ra, int bit55) -{ - int mem_tag, mmu_idx, ptr_tag, size; - MMUAccessType type; - uint8_t *mem; - - ptr_tag =3D allocation_tag_from_addr(ptr); - - if (tcma_check(desc, bit55, ptr_tag)) { - return true; - } - - mmu_idx =3D FIELD_EX32(desc, MTEDESC, MIDX); - type =3D FIELD_EX32(desc, MTEDESC, WRITE) ? MMU_DATA_STORE : MMU_DATA_= LOAD; - size =3D FIELD_EX32(desc, MTEDESC, ESIZE); - - mem =3D allocation_tag_mem(env, mmu_idx, ptr, type, size, - MMU_DATA_LOAD, 1, ra); - if (!mem) { - return true; - } - - mem_tag =3D load_tag1(ptr, mem); - return ptr_tag =3D=3D mem_tag; -} - -/* - * No-fault version of mte_check1, to be used by SVE for MemSingleNF. - * Returns false if the access is Checked and the check failed. This - * is only intended to probe the tag -- the validity of the page must - * be checked beforehand. - */ -bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr) -{ - int bit55 =3D extract64(ptr, 55, 1); - - /* If TBI is disabled, the access is unchecked. */ - if (unlikely(!tbi_check(desc, bit55))) { - return true; - } - - return mte_probe1_int(env, desc, ptr, 0, bit55); -} - -uint64_t mte_check1(CPUARMState *env, uint32_t desc, - uint64_t ptr, uintptr_t ra) -{ - int bit55 =3D extract64(ptr, 55, 1); - - /* If TBI is disabled, the access is unchecked, and ptr is not dirty. = */ - if (unlikely(!tbi_check(desc, bit55))) { - return ptr; - } - - if (unlikely(!mte_probe1_int(env, desc, ptr, ra, bit55))) { - mte_check_fail(env, desc, ptr, ra); - } - - return useronly_clean_ptr(ptr); -} - -uint64_t HELPER(mte_check1)(CPUARMState *env, uint32_t desc, uint64_t ptr) -{ - return mte_check1(env, desc, ptr, GETPC()); -} - -/* - * Perform an MTE checked access for multiple logical accesses. - */ - /** * checkN: * @tag: tag memory to test @@ -882,6 +808,41 @@ uint64_t HELPER(mte_checkN)(CPUARMState *env, uint32_t= desc, uint64_t ptr) return mte_checkN(env, desc, ptr, GETPC()); } =20 +uint64_t mte_check1(CPUARMState *env, uint32_t desc, + uint64_t ptr, uintptr_t ra) +{ + uint64_t fault; + uint32_t total =3D FIELD_EX32(desc, MTEDESC, ESIZE); + int ret =3D mte_probe_int(env, desc, ptr, ra, total, &fault); + + if (unlikely(ret =3D=3D 0)) { + mte_check_fail(env, desc, fault, ra); + } else if (ret < 0) { + return ptr; + } + return useronly_clean_ptr(ptr); +} + +uint64_t HELPER(mte_check1)(CPUARMState *env, uint32_t desc, uint64_t ptr) +{ + return mte_check1(env, desc, ptr, GETPC()); +} + +/* + * No-fault version of mte_check1, to be used by SVE for MemSingleNF. + * Returns false if the access is Checked and the check failed. This + * is only intended to probe the tag -- the validity of the page must + * be checked beforehand. + */ +bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr) +{ + uint64_t fault; + uint32_t total =3D FIELD_EX32(desc, MTEDESC, ESIZE); + int ret =3D mte_probe_int(env, desc, ptr, 0, total, &fault); + + return ret !=3D 0; +} + /* * Perform an MTE checked access for DC_ZVA. */ --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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=1617400105; cv=none; d=zohomail.com; s=zohoarc; b=HU3uLSc3ZMah/wGOr+H9T1VRB/X/ytxzdXEHsZVZJ9hbbmtGEaB9LIPQbh+YQII5rlbiJ1B8n5JBiniHRpMZoioYvArPYAB9HpWq3pgonC92z8IEM56/EVqFGMFK8TzZh/FUELT+C5K8UW22xTY1Zhi5YFQuGhviA0lP6c7d5No= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617400105; 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=w7i6Gze7kec69WvQyswSUuzpscM5477tzDtA09nT/yo=; b=kG9QcxeTrpl7iQKQGAKcMT1YnlqH4jxpBqupjW7BlINZVSGb3jfGNL3kpoCAk0vEAi7AJm2WSgGPtjJcUoEkx+z5Vdi17BVzsM00dgkSIhaJve144tfyMROIgGm/5a4fWfnjZXY5DDcT9Xbn12TE96ZnB/ybkp/6vkWhSPQdVbk= 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 1617400105565832.8121700826913; Fri, 2 Apr 2021 14:48:25 -0700 (PDT) Received: from localhost ([::1]:56492 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSReS-0000zN-JB for importer@patchew.org; Fri, 02 Apr 2021 17:48:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35724) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYn-0000WD-C9 for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:33 -0400 Received: from mail-pg1-x536.google.com ([2607:f8b0:4864:20::536]:34384) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYj-0007ic-MW for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:33 -0400 Received: by mail-pg1-x536.google.com with SMTP id i6so4295016pgs.1 for ; Fri, 02 Apr 2021 14:42:29 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:27 -0700 (PDT) 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=w7i6Gze7kec69WvQyswSUuzpscM5477tzDtA09nT/yo=; b=sJ+fRRKRHVe4k1QdnpvFL3P9/4rCwCNXUKcyDTJaKzpzdwZmTWi+X3FpCGgjLYqkUp 5D3Vdml6HWQXZu4mQh8F2VmyJ+23OO+aR4wx90EDfkkdzJIZWAhc0msVTopSgqTb2Oz6 SnEbPrH0V8kr18hfobM/a3d1tNNQgUWOPUUk2yRbfFGA33yj6wp5kGG2kQ8G24Lfbxbb SUqIOBvkt7ygia4CV5b12NC4jhzZ2HYq48XVlbTDCi5R/I5UjAytkw2ZpgAny77ArJRo iwKyRdj6Mgbw6qeZ0emZR8O4DwbTi7RnOvOflokaY2swRT5+OkWnn1ok79U5W5UVm2KL BmZw== 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=w7i6Gze7kec69WvQyswSUuzpscM5477tzDtA09nT/yo=; 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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::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=unavailable 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: qemu-arm@nongnu.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" Buglink: https://bugs.launchpad.net/bugs/1921948 Signed-off-by: Richard Henderson --- tests/tcg/aarch64/mte-5.c | 44 +++++++++++++++++++++++++++++++ tests/tcg/aarch64/Makefile.target | 2 +- 2 files changed, 45 insertions(+), 1 deletion(-) create mode 100644 tests/tcg/aarch64/mte-5.c diff --git a/tests/tcg/aarch64/mte-5.c b/tests/tcg/aarch64/mte-5.c new file mode 100644 index 0000000000..6dbd6ab3ea --- /dev/null +++ b/tests/tcg/aarch64/mte-5.c @@ -0,0 +1,44 @@ +/* + * Memory tagging, faulting unaligned access. + * + * 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; + void *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); + + memset(&sa, 0, sizeof(sa)); + sa.sa_sigaction =3D pass; + sa.sa_flags =3D SA_SIGINFO; + sigaction(SIGSEGV, &sa, NULL); + + /* Store store two different tags in sequential granules. */ + asm("stg %0, [%0]" : : "r"(p1)); + asm("stg %0, [%0]" : : "r"(p2 + 16)); + + /* Perform an unaligned load crossing the granules. */ + asm volatile("ldr %0, [%1]" : "=3Dr"(p0) : "r"(p1 + 12)); + abort(); +} diff --git a/tests/tcg/aarch64/Makefile.target b/tests/tcg/aarch64/Makefile= .target index 05b2622bfc..928357b10a 100644 --- a/tests/tcg/aarch64/Makefile.target +++ b/tests/tcg/aarch64/Makefile.target @@ -37,7 +37,7 @@ 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-6 +AARCH64_TESTS +=3D mte-1 mte-2 mte-3 mte-4 mte-5 mte-6 mte-%: CFLAGS +=3D -march=3Darmv8.5-a+memtag endif =20 --=20 2.25.1 From nobody Wed Apr 24 03:03:25 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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[216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:29 -0700 (PDT) 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=nVjL89dPa0iSuNtGwDs8E92oNbPSDkirfGGdEubmG2Y=; b=wXmvy+x1T9i9pZirx8EIghu0dfr29KmAZZRZvu4LKkryaWLFiwQYYwe5goIbdIJVo3 Am+COM5g045c1YEGiqPZPJH4R10O0uVdZSzzVfpIEazHSVnGy8wq52PDwaDj3DKeH1TJ QTnLk3oScIioHcVFDlfxHFMi4/6+DpqgigbXWpWJWrQdrB85O5dmBkGNNQ+vvAkMwUBr TVKP52phuPVw403Wr23XpY9p6WlY/ug3VIhrrXKhDKx9Ww0lOiOX3fvbOwZTuLt7zygg Hia9pOEJq+wuQZ43vfIFUMc2yM2NZ/c6de2elMqux9puWWs/o5sTFq+TMjAmM9BTueHv j97g== 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=nVjL89dPa0iSuNtGwDs8E92oNbPSDkirfGGdEubmG2Y=; b=Ng1dtAWELX+PiXln4i13iV5IdiPEdB3yT1EA1+uG18H7WvAFDw8y1govZJxGoPOgvB r5paYY+k+nBeV7c5Pb0omFAZrJLO7iyKBVbA4flDNBqiVu326y25XMOgJ6YJ9TAIQR+0 /Ev2z3LIC4wIayLm6kQ7GEe08GRgSQKXS76PhqvDaUbPpqrt1GWdMN4W6ryiKlqMg1Hz TmngSWIV5B1EwBtCsQQ00nlvl5qbbV9q3A9xhV2+Z2JbcL7yiQSFaGhagadsPOll0nff mR7+79+kNluM8oMDhJXwDig6Q3lyEhdUb0LwesAX19HMdrpZkSts1NIwwOwmJ26q4efM xONw== X-Gm-Message-State: AOAM530hEUdba5bY8+9UcLIQy2WUr4UI6t8n66vG4MQ17CSLhSotJxY5 sYrHvqngO94F/PYTrF1Ts4LjC8iMwR/VTw== X-Google-Smtp-Source: ABdhPJwYhDAjOAuOzPUSPHs4qIz9X1Dt0N5A6PyvGGSb8yWAQI1UN1oQjXt+5NGTHi29A3hH7m7OhQ== X-Received: by 2002:a17:90a:540c:: with SMTP id z12mr15117844pjh.163.1617399749620; Fri, 02 Apr 2021 14:42:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 07/11] target/arm: Replace MTEDESC ESIZE+TSIZE with SIZEM1 Date: Fri, 2 Apr 2021 14:42:13 -0700 Message-Id: <20210402214217.422585-8-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::1036; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1036.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: qemu-arm@nongnu.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" After recent changes, mte_checkN does not use ESIZE, and mte_check1 never used TSIZE. We can combine the two into a single field: SIZEM1. Choose to pass size - 1 because size =3D=3D 0 is never used, our immediate need in mte_probe_int is for the address of the last byte (ptr + size - 1), and since almost all operations are powers of 2, this makes the immediate constant one bit smaller. Signed-off-by: Richard Henderson --- target/arm/internals.h | 3 +-- target/arm/mte_helper.c | 18 ++++++++---------- target/arm/translate-a64.c | 5 ++--- target/arm/translate-sve.c | 5 ++--- 4 files changed, 13 insertions(+), 18 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index f11bd32696..ced46ddf46 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1142,8 +1142,7 @@ FIELD(MTEDESC, MIDX, 0, 4) FIELD(MTEDESC, TBI, 4, 2) FIELD(MTEDESC, TCMA, 6, 2) FIELD(MTEDESC, WRITE, 8, 1) -FIELD(MTEDESC, ESIZE, 9, 5) -FIELD(MTEDESC, TSIZE, 14, 10) /* mte_checkN only */ +FIELD(MTEDESC, SIZEM1, 12, 10) /* size - 1 */ =20 bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr); uint64_t mte_check1(CPUARMState *env, uint32_t desc, diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 6fcfaf5c9e..064ce23505 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -692,13 +692,13 @@ static int checkN(uint8_t *mem, int odd, int cmp, int= count) * Return positive on success with tbi enabled. */ static int mte_probe_int(CPUARMState *env, uint32_t desc, uint64_t ptr, - uintptr_t ra, uint32_t total, uint64_t *fault) + uintptr_t ra, uint64_t *fault) { int mmu_idx, ptr_tag, bit55; uint64_t ptr_last, prev_page, next_page; uint64_t tag_first, tag_end; uint64_t tag_byte_first, tag_byte_end; - uint32_t tag_count, tag_size, n, c; + uint32_t sizem1, tag_count, tag_size, n, c; uint8_t *mem1, *mem2; MMUAccessType type; =20 @@ -718,9 +718,10 @@ static int mte_probe_int(CPUARMState *env, uint32_t de= sc, uint64_t ptr, =20 mmu_idx =3D FIELD_EX32(desc, MTEDESC, MIDX); type =3D FIELD_EX32(desc, MTEDESC, WRITE) ? MMU_DATA_STORE : MMU_DATA_= LOAD; + sizem1 =3D FIELD_EX32(desc, MTEDESC, SIZEM1); =20 /* Find the addr of the end of the access, and of the last element. */ - ptr_last =3D ptr + total - 1; + ptr_last =3D ptr + sizem1; =20 /* Round the bounds to the tag granule, and compute the number of tags= . */ tag_first =3D QEMU_ALIGN_DOWN(ptr, TAG_GRANULE); @@ -738,7 +739,7 @@ static int mte_probe_int(CPUARMState *env, uint32_t des= c, uint64_t ptr, if (likely(tag_end - prev_page <=3D TARGET_PAGE_SIZE)) { /* Memory access stays on one page. */ tag_size =3D (tag_byte_end - tag_byte_first) / (2 * TAG_GRANULE); - mem1 =3D allocation_tag_mem(env, mmu_idx, ptr, type, total, + mem1 =3D allocation_tag_mem(env, mmu_idx, ptr, type, sizem1 + 1, MMU_DATA_LOAD, tag_size, ra); if (!mem1) { return 1; @@ -792,8 +793,7 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_t ra) { uint64_t fault; - uint32_t total =3D FIELD_EX32(desc, MTEDESC, TSIZE); - int ret =3D mte_probe_int(env, desc, ptr, ra, total, &fault); + int ret =3D mte_probe_int(env, desc, ptr, ra, &fault); =20 if (unlikely(ret =3D=3D 0)) { mte_check_fail(env, desc, fault, ra); @@ -812,8 +812,7 @@ uint64_t mte_check1(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_t ra) { uint64_t fault; - uint32_t total =3D FIELD_EX32(desc, MTEDESC, ESIZE); - int ret =3D mte_probe_int(env, desc, ptr, ra, total, &fault); + int ret =3D mte_probe_int(env, desc, ptr, ra, &fault); =20 if (unlikely(ret =3D=3D 0)) { mte_check_fail(env, desc, fault, ra); @@ -837,8 +836,7 @@ uint64_t HELPER(mte_check1)(CPUARMState *env, uint32_t = desc, uint64_t ptr) bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr) { uint64_t fault; - uint32_t total =3D FIELD_EX32(desc, MTEDESC, ESIZE); - int ret =3D mte_probe_int(env, desc, ptr, 0, total, &fault); + int ret =3D mte_probe_int(env, desc, ptr, 0, &fault); =20 return ret !=3D 0; } diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 0b42e53500..3af00ae90e 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -272,7 +272,7 @@ static TCGv_i64 gen_mte_check1_mmuidx(DisasContext *s, = TCGv_i64 addr, desc =3D FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc =3D FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc =3D FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc =3D FIELD_DP32(desc, MTEDESC, ESIZE, 1 << log2_size); + desc =3D FIELD_DP32(desc, MTEDESC, SIZEM1, (1 << log2_size) - 1); tcg_desc =3D tcg_const_i32(desc); =20 ret =3D new_tmp_a64(s); @@ -306,8 +306,7 @@ TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr,= bool is_write, desc =3D FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc =3D FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc =3D FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc =3D FIELD_DP32(desc, MTEDESC, ESIZE, 1 << log2_esize); - desc =3D FIELD_DP32(desc, MTEDESC, TSIZE, total_size); + desc =3D FIELD_DP32(desc, MTEDESC, SIZEM1, total_size - 1); tcg_desc =3D tcg_const_i32(desc); =20 ret =3D new_tmp_a64(s); diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 0eefb61214..5179c1f836 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -4509,8 +4509,7 @@ static void do_mem_zpa(DisasContext *s, int zt, int p= g, TCGv_i64 addr, desc =3D FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc =3D FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc =3D FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc =3D FIELD_DP32(desc, MTEDESC, ESIZE, 1 << msz); - desc =3D FIELD_DP32(desc, MTEDESC, TSIZE, mte_n << msz); + desc =3D FIELD_DP32(desc, MTEDESC, SIZEM1, (mte_n << msz) - 1); desc <<=3D SVE_MTEDESC_SHIFT; } else { addr =3D clean_data_tbi(s, addr); @@ -5189,7 +5188,7 @@ static void do_mem_zpz(DisasContext *s, int zt, int p= g, int zm, desc =3D FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc =3D FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc =3D FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc =3D FIELD_DP32(desc, MTEDESC, ESIZE, 1 << msz); + desc =3D FIELD_DP32(desc, MTEDESC, SIZEM1, (1 << msz) - 1); desc <<=3D SVE_MTEDESC_SHIFT; } desc =3D simd_desc(vsz, vsz, desc | scale); --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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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[216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:30 -0700 (PDT) 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=ve/jJl7jj6QG6l0SMQqnlWm9FxHtZv4aWQa/SinIhEw=; b=wQWWX0Raz4FXws7qgHHRyYYFX4VbDFnPgctFeaZPR1OVT1/42nGTDE2AN6O6iWyWXZ 2w7tgBXZ521X2P3wzCqEd/wMDoyW8sHOaczvNiIM/Sj2uiMM73m1/Fh+oOqA8ULjdepa vlIfpyozd4BDWx8u8x5X9gUx95EQnnTuEfAVlJKGHxzsWimck8sehZ1VhGmbbJ54YhSS 5mq3kjaPzSHHZdpOPcoICV9KQHR4gqPHzd99EDrFyax7YXn5twzJ3zrF81F/9PWMBU7b 1+o7+CTiDVkWsqOiG54VqjfI85DoEBtpq5Qu0WQILkJM/gkwYoh7b0slJbo1wwWkLlOs Dlvg== 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=ve/jJl7jj6QG6l0SMQqnlWm9FxHtZv4aWQa/SinIhEw=; b=JrsrpUSy6rIdffRAsCcIEKIuceH5f3KfVz4nZXqhNVRpJNIC0B0rDozRH+i1ws8ek5 0osq39wGCnzDWK8SXXKbyci7Sg9Gfg3rUnVSOdUq7OgySgbD7wNEbhZO6vZeb2LtmusS nJ2ygi2tjbYUWQ1T+mdg3HDNoQ334V915qQTYIAMOklDTKPToIKyzGSMsAlUGzMGsxM9 IRIYVHFc/vyEFl6niw5ZxHs1gaRSCfwEfMxvPkWRqk08ftM6VY2BQ4DxvBxoLzjY6uda sWHHDoSBDR2IF8nqz+usKK8vZHV0TmWvZKdzA88EMv/fxkayuz5RcO5589ohdzox9vdS 584A== X-Gm-Message-State: AOAM533X31OioljGazTdanA8DKbIssiAW+VJCvdfFvn2hzr9CNN5aumS cN1UHFR9WGlIvRDm1Cmyav8Ibk6VVJhEwA== X-Google-Smtp-Source: ABdhPJzR5EmreOYsXYGfibb4TFj3EvA+j+MU7DHE60MD7pIPfpgXd0N17X0N/RkaHNFg3T7K94ysRQ== X-Received: by 2002:a63:707:: with SMTP id 7mr13094084pgh.319.1617399750680; Fri, 02 Apr 2021 14:42:30 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 08/11] target/arm: Merge mte_check1, mte_checkN Date: Fri, 2 Apr 2021 14:42:14 -0700 Message-Id: <20210402214217.422585-9-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::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: qemu-arm@nongnu.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 mte_check1 and mte_checkN functions are now identical. Drop mte_check1 and rename mte_checkN to mte_check. Signed-off-by: Richard Henderson --- target/arm/helper-a64.h | 3 +-- target/arm/internals.h | 5 +---- target/arm/mte_helper.c | 26 +++----------------------- target/arm/sve_helper.c | 14 +++++++------- target/arm/translate-a64.c | 4 ++-- 5 files changed, 14 insertions(+), 38 deletions(-) diff --git a/target/arm/helper-a64.h b/target/arm/helper-a64.h index c139fa81f9..7b706571bb 100644 --- a/target/arm/helper-a64.h +++ b/target/arm/helper-a64.h @@ -104,8 +104,7 @@ DEF_HELPER_FLAGS_3(autdb, TCG_CALL_NO_WG, i64, env, i64= , i64) DEF_HELPER_FLAGS_2(xpaci, TCG_CALL_NO_RWG_SE, i64, env, i64) DEF_HELPER_FLAGS_2(xpacd, TCG_CALL_NO_RWG_SE, i64, env, i64) =20 -DEF_HELPER_FLAGS_3(mte_check1, TCG_CALL_NO_WG, i64, env, i32, i64) -DEF_HELPER_FLAGS_3(mte_checkN, TCG_CALL_NO_WG, i64, env, i32, i64) +DEF_HELPER_FLAGS_3(mte_check, TCG_CALL_NO_WG, i64, env, i32, i64) DEF_HELPER_FLAGS_3(mte_check_zva, TCG_CALL_NO_WG, i64, env, i32, i64) DEF_HELPER_FLAGS_3(irg, TCG_CALL_NO_RWG, i64, env, i64, i64) DEF_HELPER_FLAGS_4(addsubg, TCG_CALL_NO_RWG_SE, i64, env, i64, s32, i32) diff --git a/target/arm/internals.h b/target/arm/internals.h index ced46ddf46..34df5acda1 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1145,10 +1145,7 @@ FIELD(MTEDESC, WRITE, 8, 1) FIELD(MTEDESC, SIZEM1, 12, 10) /* size - 1 */ =20 bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr); -uint64_t mte_check1(CPUARMState *env, uint32_t desc, - uint64_t ptr, uintptr_t ra); -uint64_t mte_checkN(CPUARMState *env, uint32_t desc, - uint64_t ptr, uintptr_t ra); +uint64_t mte_check(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_= t ra); =20 static inline int allocation_tag_from_addr(uint64_t ptr) { diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 064ce23505..41e0e57e1a 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -789,8 +789,7 @@ static int mte_probe_int(CPUARMState *env, uint32_t des= c, uint64_t ptr, return 0; } =20 -uint64_t mte_checkN(CPUARMState *env, uint32_t desc, - uint64_t ptr, uintptr_t ra) +uint64_t mte_check(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_= t ra) { uint64_t fault; int ret =3D mte_probe_int(env, desc, ptr, ra, &fault); @@ -803,28 +802,9 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc, return useronly_clean_ptr(ptr); } =20 -uint64_t HELPER(mte_checkN)(CPUARMState *env, uint32_t desc, uint64_t ptr) +uint64_t HELPER(mte_check)(CPUARMState *env, uint32_t desc, uint64_t ptr) { - return mte_checkN(env, desc, ptr, GETPC()); -} - -uint64_t mte_check1(CPUARMState *env, uint32_t desc, - uint64_t ptr, uintptr_t ra) -{ - uint64_t fault; - int ret =3D mte_probe_int(env, desc, ptr, ra, &fault); - - if (unlikely(ret =3D=3D 0)) { - mte_check_fail(env, desc, fault, ra); - } else if (ret < 0) { - return ptr; - } - return useronly_clean_ptr(ptr); -} - -uint64_t HELPER(mte_check1)(CPUARMState *env, uint32_t desc, uint64_t ptr) -{ - return mte_check1(env, desc, ptr, GETPC()); + return mte_check(env, desc, ptr, GETPC()); } =20 /* diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index fd6c58f96a..b63ddfc7f9 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -4442,7 +4442,7 @@ static void sve_cont_ldst_mte_check1(SVEContLdSt *inf= o, CPUARMState *env, uintptr_t ra) { sve_cont_ldst_mte_check_int(info, env, vg, addr, esize, msize, - mtedesc, ra, mte_check1); + mtedesc, ra, mte_check); } =20 static void sve_cont_ldst_mte_checkN(SVEContLdSt *info, CPUARMState *env, @@ -4451,7 +4451,7 @@ static void sve_cont_ldst_mte_checkN(SVEContLdSt *inf= o, CPUARMState *env, uintptr_t ra) { sve_cont_ldst_mte_check_int(info, env, vg, addr, esize, msize, - mtedesc, ra, mte_checkN); + mtedesc, ra, mte_check); } =20 =20 @@ -4826,7 +4826,7 @@ void sve_ldnfff1_r(CPUARMState *env, void *vg, const = target_ulong addr, if (fault =3D=3D FAULT_FIRST) { /* Trapping mte check for the first-fault element. */ if (mtedesc) { - mte_check1(env, mtedesc, addr + mem_off, retaddr); + mte_check(env, mtedesc, addr + mem_off, retaddr); } =20 /* @@ -5373,7 +5373,7 @@ void sve_ld1_z(CPUARMState *env, void *vd, uint64_t *= vg, void *vm, info.attrs, BP_MEM_READ, reta= ddr); } if (mtedesc && arm_tlb_mte_tagged(&info.attrs)) { - mte_check1(env, mtedesc, addr, retaddr); + mte_check(env, mtedesc, addr, retaddr); } host_fn(&scratch, reg_off, info.host); } else { @@ -5386,7 +5386,7 @@ void sve_ld1_z(CPUARMState *env, void *vd, uint64_t *= vg, void *vm, BP_MEM_READ, retaddr); } if (mtedesc && arm_tlb_mte_tagged(&info.attrs)) { - mte_check1(env, mtedesc, addr, retaddr); + mte_check(env, mtedesc, addr, retaddr); } tlb_fn(env, &scratch, reg_off, addr, retaddr); } @@ -5552,7 +5552,7 @@ void sve_ldff1_z(CPUARMState *env, void *vd, uint64_t= *vg, void *vm, */ addr =3D base + (off_fn(vm, reg_off) << scale); if (mtedesc) { - mte_check1(env, mtedesc, addr, retaddr); + mte_check(env, mtedesc, addr, retaddr); } tlb_fn(env, vd, reg_off, addr, retaddr); =20 @@ -5773,7 +5773,7 @@ void sve_st1_z(CPUARMState *env, void *vd, uint64_t *= vg, void *vm, } =20 if (mtedesc && arm_tlb_mte_tagged(&info.attrs)) { - mte_check1(env, mtedesc, addr, retaddr); + mte_check(env, mtedesc, addr, retaddr); } } i +=3D 1; diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 3af00ae90e..a68d5dd5d1 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -276,7 +276,7 @@ static TCGv_i64 gen_mte_check1_mmuidx(DisasContext *s, = TCGv_i64 addr, tcg_desc =3D tcg_const_i32(desc); =20 ret =3D new_tmp_a64(s); - gen_helper_mte_check1(ret, cpu_env, tcg_desc, addr); + gen_helper_mte_check(ret, cpu_env, tcg_desc, addr); tcg_temp_free_i32(tcg_desc); =20 return ret; @@ -310,7 +310,7 @@ TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr,= bool is_write, tcg_desc =3D tcg_const_i32(desc); =20 ret =3D new_tmp_a64(s); 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[216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:31 -0700 (PDT) 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=NmiU8Ib3T0VJ88NFYW06+nKZ5vZvzPj9TAT+urDNBUk=; b=dB84DUhEYrEhzBua6EDu5w0Keo/gAVc1UUNMC+j1lFI8uojPwzL7qVRoIwx4Sm0V8b g8au0EsnBxoysArQ95mz67gCjD0Qt+FRv1DHoTiy2ar1OI6UEETUBb0HA8og2CxRfPaE eo6WHr7Hf44KyGx6MABgjMsrK8UbkBcgVBh3YJK+uFx9dlh7DMt/T/ejmxniEg/wyCOY cDGNVCzzksL1Ffl4JYir1QO6r7gr0+v0aSteRMfj4zbibUjh71ISxuNfZDX8eo9HHiLz AOw2ppvXU6VTF5UOLRzNfZwHcSHocvr8gNNFN4qr+uLE0wOa5dr50CZVaMIkgbGULagk W+jQ== 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=NmiU8Ib3T0VJ88NFYW06+nKZ5vZvzPj9TAT+urDNBUk=; b=mrdCW/4CF1tMjrNmSAqml9S0JfEp2yhXPQI7DW1s8rnUsR1rj4+8zQ/iabjubEP6KS GLxIqEiRaKtYPryND8nGZwHyRmQ0x19dEujGGueWJMZ2U9MdNg4B/G1bnJkppe5gyGpt 56ZdELed4LNpYBWYRw/p6kzKmH5VMP8UqFcOOwufbshGofE3OoiFWEU0Eo/hrxVFhkB8 1X0apDb1biEH4HlHaxLBhvYSV3bszSpzVoWU2f6LoBntcPGj9enseJQ/mV5Qmm6Ca40s bc+b09G7y+FH0lFcs82lo7o22KA61GMgbvXueOy8zseIly2+9S6ZWcYAKUTwd5P7XqMo HeLg== X-Gm-Message-State: AOAM531oAJrKUchN27wzxCzpeoedDx5Ugtdogobu0+7XNFCltFNFxlgb dCo/Y4zmV0kYcA90hVTyXRewHfUeyGYMDA== X-Google-Smtp-Source: ABdhPJxceLnvU3HqQ1gvzQ3GlWEihYdibTkjnNp1Wb6E60SyH6JlodS8uW8Xr/jqwsZTsSE6nlsugg== X-Received: by 2002:aa7:96cc:0:b029:202:6873:8ab4 with SMTP id h12-20020aa796cc0000b029020268738ab4mr13744044pfq.42.1617399751811; Fri, 02 Apr 2021 14:42:31 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 09/11] target/arm: Rename mte_probe1 to mte_probe Date: Fri, 2 Apr 2021 14:42:15 -0700 Message-Id: <20210402214217.422585-10-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::436; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x436.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: qemu-arm@nongnu.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 consistency with the mte_check1 + mte_checkN merge to mte_check, rename the probe function as well. Signed-off-by: Richard Henderson --- target/arm/internals.h | 2 +- target/arm/mte_helper.c | 6 +++--- target/arm/sve_helper.c | 6 +++--- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index 34df5acda1..f59490c3fc 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1144,7 +1144,7 @@ FIELD(MTEDESC, TCMA, 6, 2) FIELD(MTEDESC, WRITE, 8, 1) FIELD(MTEDESC, SIZEM1, 12, 10) /* size - 1 */ =20 -bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr); +bool mte_probe(CPUARMState *env, uint32_t desc, uint64_t ptr); uint64_t mte_check(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_= t ra); =20 static inline int allocation_tag_from_addr(uint64_t ptr) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index 41e0e57e1a..b17c7e9f3b 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -121,7 +121,7 @@ static uint8_t *allocation_tag_mem(CPUARMState *env, in= t ptr_mmu_idx, * exception for inaccessible pages, and resolves the virtual address * into the softmmu tlb. * - * When RA =3D=3D 0, this is for mte_probe1. The page is expected to = be + * When RA =3D=3D 0, this is for mte_probe. The page is expected to be * valid. Indicate to probe_access_flags no-fault, then assert that * we received a valid page. */ @@ -808,12 +808,12 @@ uint64_t HELPER(mte_check)(CPUARMState *env, uint32_t= desc, uint64_t ptr) } =20 /* - * No-fault version of mte_check1, to be used by SVE for MemSingleNF. + * No-fault version of mte_check, to be used by SVE for MemSingleNF. * Returns false if the access is Checked and the check failed. This * is only intended to probe the tag -- the validity of the page must * be checked beforehand. */ -bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr) +bool mte_probe(CPUARMState *env, uint32_t desc, uint64_t ptr) { uint64_t fault; int ret =3D mte_probe_int(env, desc, ptr, 0, &fault); diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index b63ddfc7f9..982240d104 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -4869,7 +4869,7 @@ void sve_ldnfff1_r(CPUARMState *env, void *vg, const = target_ulong addr, /* Watchpoint hit, see below. */ goto do_fault; } - if (mtedesc && !mte_probe1(env, mtedesc, addr + mem_off)) { + if (mtedesc && !mte_probe(env, mtedesc, addr + mem_off)) { goto do_fault; } /* @@ -4919,7 +4919,7 @@ void sve_ldnfff1_r(CPUARMState *env, void *vg, const = target_ulong addr, & BP_MEM_READ)) { goto do_fault; } - if (mtedesc && !mte_probe1(env, mtedesc, addr + mem_off)) { + if (mtedesc && !mte_probe(env, mtedesc, addr + mem_off)) { goto do_fault; } host_fn(vd, reg_off, host + mem_off); @@ -5588,7 +5588,7 @@ void sve_ldff1_z(CPUARMState *env, void *vd, uint64_t= *vg, void *vm, } if (mtedesc && arm_tlb_mte_tagged(&info.attrs) && - !mte_probe1(env, mtedesc, addr)) { + !mte_probe(env, mtedesc, addr)) { goto fault; } =20 --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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=1617400256; cv=none; d=zohomail.com; s=zohoarc; b=hiprDJ9b4BtSZ00HVeev2bXrs02vJ9r4kMHPYAI4e1hGJXhgCTkdKOQfqIyAWlBjpAc3mrDa/44KVXxlfWl9wRs95Ly9cW0pvrbfbdi/bDvnWeHggtjmlqjnRCA8YEWDUfTeefjF0YdjfqqvHixTRxEMHRJz5FuUlw51PDZviSI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617400256; 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=Xg0dHSSHbNndr4UE+t8eLAkBBwNMOnWRtx1WrZnfz3o=; b=Ukn3hAG6LNuayDTVgs9eoIDCZBKRHYtd+mOeerq27UKrM4SsS7JUn4ivDBbybBbzdx1KiEjAtKoQwBvCRZjmxWzWxSk7G6fOAxILKyO3FYTor36Xpb2EdjOsSlTwrOeZCTOkVsQzqYTvk6xpV1pqHKwZTZlYbQxbnU7vy3BACAw= 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 1617400256375457.44269375684837; Fri, 2 Apr 2021 14:50:56 -0700 (PDT) Received: from localhost ([::1]:35346 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSRgt-0003vV-7y for importer@patchew.org; Fri, 02 Apr 2021 17:50:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35812) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYr-0000gL-AJ for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:37 -0400 Received: from mail-pf1-x435.google.com ([2607:f8b0:4864:20::435]:38643) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYo-0007nK-IC for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:37 -0400 Received: by mail-pf1-x435.google.com with SMTP id v10so4319648pfn.5 for ; Fri, 02 Apr 2021 14:42:34 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:32 -0700 (PDT) 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=Xg0dHSSHbNndr4UE+t8eLAkBBwNMOnWRtx1WrZnfz3o=; b=V4nN8tfqx/rSiR9iLKlwjOQHPdjl78jtPs5wRQnF6Tiku3AUKNiqYKGhVYnhaG7X3E OSbuln17PqYnR9ghcP2AGNyAdxllxKgFcdmrbBhPjaBLwQSw0nHVp94pdyux1tvWnWW+ +yYp8OF0SXDN8E+4csO/+UwMpQ4FDpq8GohAGgoFMDtlKTzn+sDrpVmP8nHduASNIQBF nygM0yfbBvw5G3XnuBNEGbtjGlEMC+iqzG5CvCn89t/j6D1+0xi2f3SOjAbJiccDtl8v Yy4kZrnGye0MkfIMLaOOB2LAFwT7Q61qQotkTMzhNnDky9INZ9DcMCkNXUiBf1Ho0ypG JnnQ== 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=Xg0dHSSHbNndr4UE+t8eLAkBBwNMOnWRtx1WrZnfz3o=; b=MxqKODza2nw0BnuVo/HaZ5pbL/GB45aL2WFI9+ItlGnjvrGO24pIIwsJecjo8ZCDok P0rkQ6N7Ljj9rrklwCMqQeEq0NZbIQplbD0Xp97vctaU/CaS6c8HLPzyt27nVse4F16b yhJN3VKOJs7yOTTsTKfERQKsIbiUC14HJDLZqciryQZKiytGXGF03wOD6i+OCdRsQ3+2 fILTnuLZn2RY7zw65pUlJpImFPtG2B6ESa750/g2yMOYzac3YdjEexNspzeTgpfBTMbq dR+KcLf4/3HNENfOL4arFv3SehWWdeyAvBBdo6aCTbwAtI4OsLOlcb5hj/EJqq1O1WlA Y/sA== X-Gm-Message-State: AOAM5325SF9jr/dpC6zCOlITrA5T0/p0M2YL6x6lvhRxmSZCBv8raxcE qD3DmphjHJ9KmAHD5txSNzY6hhU9Oz2SEw== X-Google-Smtp-Source: ABdhPJzHkEWgCIpAvAPGR9Bu7L1a4gtScromWrh+G3b56TjtxB3+O7GI4E+fyVIOk0ZPP2Od8+iP/A== X-Received: by 2002:a62:3706:0:b029:211:3d70:a55a with SMTP id e6-20020a6237060000b02902113d70a55amr13373684pfa.16.1617399753164; Fri, 02 Apr 2021 14:42:33 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 10/11] target/arm: Simplify sve mte checking Date: Fri, 2 Apr 2021 14:42:16 -0700 Message-Id: <20210402214217.422585-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::435; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x435.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=unavailable 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: qemu-arm@nongnu.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" Now that mte_check1 and mte_checkN have been merged, we can merge sve_cont_ldst_mte_check1 and sve_cont_ldst_mte_checkN. Which means that we can eliminate the function pointer into sve_ldN_r and sve_stN_r, calling sve_cont_ldst_mte_check directly. Signed-off-by: Richard Henderson --- target/arm/sve_helper.c | 84 +++++++++++++---------------------------- 1 file changed, 26 insertions(+), 58 deletions(-) diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index 982240d104..c068dfa0d5 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -4382,13 +4382,9 @@ static void sve_cont_ldst_watchpoints(SVEContLdSt *i= nfo, CPUARMState *env, #endif } =20 -typedef uint64_t mte_check_fn(CPUARMState *, uint32_t, uint64_t, uintptr_t= ); - -static inline QEMU_ALWAYS_INLINE -void sve_cont_ldst_mte_check_int(SVEContLdSt *info, CPUARMState *env, - uint64_t *vg, target_ulong addr, int esiz= e, - int msize, uint32_t mtedesc, uintptr_t ra, - mte_check_fn *check) +static void sve_cont_ldst_mte_check(SVEContLdSt *info, CPUARMState *env, + uint64_t *vg, target_ulong addr, int e= size, + int msize, uint32_t mtedesc, uintptr_t= ra) { intptr_t mem_off, reg_off, reg_last; =20 @@ -4405,7 +4401,7 @@ void sve_cont_ldst_mte_check_int(SVEContLdSt *info, C= PUARMState *env, uint64_t pg =3D vg[reg_off >> 6]; do { if ((pg >> (reg_off & 63)) & 1) { - check(env, mtedesc, addr, ra); + mte_check(env, mtedesc, addr, ra); } reg_off +=3D esize; mem_off +=3D msize; @@ -4422,7 +4418,7 @@ void sve_cont_ldst_mte_check_int(SVEContLdSt *info, C= PUARMState *env, uint64_t pg =3D vg[reg_off >> 6]; do { if ((pg >> (reg_off & 63)) & 1) { - check(env, mtedesc, addr, ra); + mte_check(env, mtedesc, addr, ra); } reg_off +=3D esize; mem_off +=3D msize; @@ -4431,30 +4427,6 @@ void sve_cont_ldst_mte_check_int(SVEContLdSt *info, = CPUARMState *env, } } =20 -typedef void sve_cont_ldst_mte_check_fn(SVEContLdSt *info, CPUARMState *en= v, - uint64_t *vg, target_ulong addr, - int esize, int msize, uint32_t mte= desc, - uintptr_t ra); - -static void sve_cont_ldst_mte_check1(SVEContLdSt *info, CPUARMState *env, - uint64_t *vg, target_ulong addr, - int esize, int msize, uint32_t mtedes= c, - uintptr_t ra) -{ - sve_cont_ldst_mte_check_int(info, env, vg, addr, esize, msize, - mtedesc, ra, mte_check); -} - -static void sve_cont_ldst_mte_checkN(SVEContLdSt *info, CPUARMState *env, - uint64_t *vg, target_ulong addr, - int esize, int msize, uint32_t mtedes= c, - uintptr_t ra) -{ - sve_cont_ldst_mte_check_int(info, env, vg, addr, esize, msize, - mtedesc, ra, mte_check); -} - - /* * Common helper for all contiguous 1,2,3,4-register predicated stores. */ @@ -4463,8 +4435,7 @@ void sve_ldN_r(CPUARMState *env, uint64_t *vg, const = target_ulong addr, uint32_t desc, const uintptr_t retaddr, const int esz, const int msz, const int N, uint32_t mtedesc, sve_ldst1_host_fn *host_fn, - sve_ldst1_tlb_fn *tlb_fn, - sve_cont_ldst_mte_check_fn *mte_check_fn) + sve_ldst1_tlb_fn *tlb_fn) { const unsigned rd =3D simd_data(desc); const intptr_t reg_max =3D simd_oprsz(desc); @@ -4493,9 +4464,9 @@ void sve_ldN_r(CPUARMState *env, uint64_t *vg, const = target_ulong addr, * Handle mte checks for all active elements. * Since TBI must be set for MTE, !mtedesc =3D> !mte_active. */ - if (mte_check_fn && mtedesc) { - mte_check_fn(&info, env, vg, addr, 1 << esz, N << msz, - mtedesc, retaddr); + if (mtedesc) { + sve_cont_ldst_mte_check(&info, env, vg, addr, 1 << esz, N << msz, + mtedesc, retaddr); } =20 flags =3D info.page[0].flags | info.page[1].flags; @@ -4621,8 +4592,7 @@ void sve_ldN_r_mte(CPUARMState *env, uint64_t *vg, ta= rget_ulong addr, mtedesc =3D 0; } =20 - sve_ldN_r(env, vg, addr, desc, ra, esz, msz, N, mtedesc, host_fn, tlb_= fn, - N =3D=3D 1 ? sve_cont_ldst_mte_check1 : sve_cont_ldst_mte_ch= eckN); + sve_ldN_r(env, vg, addr, desc, ra, esz, msz, N, mtedesc, host_fn, tlb_= fn); } =20 #define DO_LD1_1(NAME, ESZ) \ @@ -4630,7 +4600,7 @@ void HELPER(sve_##NAME##_r)(CPUARMState *env, void *v= g, \ target_ulong addr, uint32_t desc) \ { \ sve_ldN_r(env, vg, addr, desc, GETPC(), ESZ, MO_8, 1, 0, \ - sve_##NAME##_host, sve_##NAME##_tlb, NULL); \ + sve_##NAME##_host, sve_##NAME##_tlb); \ } \ void HELPER(sve_##NAME##_r_mte)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ @@ -4644,22 +4614,22 @@ void HELPER(sve_##NAME##_le_r)(CPUARMState *env, vo= id *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_ldN_r(env, vg, addr, desc, GETPC(), ESZ, MSZ, 1, 0, \ - sve_##NAME##_le_host, sve_##NAME##_le_tlb, NULL); \ + sve_##NAME##_le_host, sve_##NAME##_le_tlb); \ } \ void HELPER(sve_##NAME##_be_r)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_ldN_r(env, vg, addr, desc, GETPC(), ESZ, MSZ, 1, 0, \ - sve_##NAME##_be_host, sve_##NAME##_be_tlb, NULL); \ + sve_##NAME##_be_host, sve_##NAME##_be_tlb); \ } \ void HELPER(sve_##NAME##_le_r_mte)(CPUARMState *env, void *vg, \ - target_ulong addr, uint32_t desc) \ + target_ulong addr, uint32_t desc) \ { \ sve_ldN_r_mte(env, vg, addr, desc, GETPC(), ESZ, MSZ, 1, \ sve_##NAME##_le_host, sve_##NAME##_le_tlb); \ } \ void HELPER(sve_##NAME##_be_r_mte)(CPUARMState *env, void *vg, \ - target_ulong addr, uint32_t desc) \ + target_ulong addr, uint32_t desc) \ { \ sve_ldN_r_mte(env, vg, addr, desc, GETPC(), ESZ, MSZ, 1, \ sve_##NAME##_be_host, sve_##NAME##_be_tlb); \ @@ -4693,7 +4663,7 @@ void HELPER(sve_ld##N##bb_r)(CPUARMState *env, void *= vg, \ target_ulong addr, uint32_t desc) \ { \ sve_ldN_r(env, vg, addr, desc, GETPC(), MO_8, MO_8, N, 0, \ - sve_ld1bb_host, sve_ld1bb_tlb, NULL); \ + sve_ld1bb_host, sve_ld1bb_tlb); \ } \ void HELPER(sve_ld##N##bb_r_mte)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ @@ -4707,13 +4677,13 @@ void HELPER(sve_ld##N##SUFF##_le_r)(CPUARMState *en= v, void *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_ldN_r(env, vg, addr, desc, GETPC(), ESZ, ESZ, N, 0, \ - sve_ld1##SUFF##_le_host, sve_ld1##SUFF##_le_tlb, NULL); \ + sve_ld1##SUFF##_le_host, sve_ld1##SUFF##_le_tlb); \ } \ void HELPER(sve_ld##N##SUFF##_be_r)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_ldN_r(env, vg, addr, desc, GETPC(), ESZ, ESZ, N, 0, \ - sve_ld1##SUFF##_be_host, sve_ld1##SUFF##_be_tlb, NULL); \ + sve_ld1##SUFF##_be_host, sve_ld1##SUFF##_be_tlb); \ } \ void HELPER(sve_ld##N##SUFF##_le_r_mte)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ @@ -5090,8 +5060,7 @@ void sve_stN_r(CPUARMState *env, uint64_t *vg, target= _ulong addr, uint32_t desc, const uintptr_t retaddr, const int esz, const int msz, const int N, uint32_t mtedesc, sve_ldst1_host_fn *host_fn, - sve_ldst1_tlb_fn *tlb_fn, - sve_cont_ldst_mte_check_fn *mte_check_fn) + sve_ldst1_tlb_fn *tlb_fn) { const unsigned rd =3D simd_data(desc); const intptr_t reg_max =3D simd_oprsz(desc); @@ -5117,9 +5086,9 @@ void sve_stN_r(CPUARMState *env, uint64_t *vg, target= _ulong addr, * Handle mte checks for all active elements. * Since TBI must be set for MTE, !mtedesc =3D> !mte_active. */ - if (mte_check_fn && mtedesc) { - mte_check_fn(&info, env, vg, addr, 1 << esz, N << msz, - mtedesc, retaddr); + if (mtedesc) { + sve_cont_ldst_mte_check(&info, env, vg, addr, 1 << esz, N << msz, + mtedesc, retaddr); } =20 flags =3D info.page[0].flags | info.page[1].flags; @@ -5233,8 +5202,7 @@ void sve_stN_r_mte(CPUARMState *env, uint64_t *vg, ta= rget_ulong addr, mtedesc =3D 0; } =20 - sve_stN_r(env, vg, addr, desc, ra, esz, msz, N, mtedesc, host_fn, tlb_= fn, - N =3D=3D 1 ? sve_cont_ldst_mte_check1 : sve_cont_ldst_mte_ch= eckN); + sve_stN_r(env, vg, addr, desc, ra, esz, msz, N, mtedesc, host_fn, tlb_= fn); } =20 #define DO_STN_1(N, NAME, ESZ) \ @@ -5242,7 +5210,7 @@ void HELPER(sve_st##N##NAME##_r)(CPUARMState *env, vo= id *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_stN_r(env, vg, addr, desc, GETPC(), ESZ, MO_8, N, 0, \ - sve_st1##NAME##_host, sve_st1##NAME##_tlb, NULL); \ + sve_st1##NAME##_host, sve_st1##NAME##_tlb); \ } \ void HELPER(sve_st##N##NAME##_r_mte)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ @@ -5256,13 +5224,13 @@ void HELPER(sve_st##N##NAME##_le_r)(CPUARMState *en= v, void *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_stN_r(env, vg, addr, desc, GETPC(), ESZ, MSZ, N, 0, \ - sve_st1##NAME##_le_host, sve_st1##NAME##_le_tlb, NULL); \ + sve_st1##NAME##_le_host, sve_st1##NAME##_le_tlb); \ } \ void HELPER(sve_st##N##NAME##_be_r)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ { \ sve_stN_r(env, vg, addr, desc, GETPC(), ESZ, MSZ, N, 0, \ - sve_st1##NAME##_be_host, sve_st1##NAME##_be_tlb, NULL); \ + sve_st1##NAME##_be_host, sve_st1##NAME##_be_tlb); \ } \ void HELPER(sve_st##N##NAME##_le_r_mte)(CPUARMState *env, void *vg, \ target_ulong addr, uint32_t desc) \ --=20 2.25.1 From nobody Wed Apr 24 03:03:25 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=1617400113; cv=none; d=zohomail.com; s=zohoarc; b=SnSEhUp+t4WgSkGBG0RtHM/qIuSWhSPAydTDnqAHEYuXSTiwsTncIfvk8+AhbLQCvB42vRXEreRHzcSurln1OzWoOk6/+BITdYbrAET2vs/UKLLi5rmyzgT3mbqUT45R9UxtEGL1xXR2PXxiq8kYvty3s+8uLpvm8wSZjLNuW/w= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617400113; 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=h30NLvQUFSmWb89iN67sfFCqk9/Ie+AiL5gYJeDwQgI=; b=GWyxoTWaIQ3R+QfuSKfl1d6o+gI+PzywssTkFHxMIbZV8ZxQD6me3AY6+iKHLji/l4tQlPCCXYQN2PA75ByeUmbAn+v5MT8L+wkete5+CxVn63I+ykETnUCZ+GtdVwCXexKgYxU31Hf50c6fGhexQQuYp2oy80kwsZRzW92fVkg= 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 1617400113052730.5938452808031; Fri, 2 Apr 2021 14:48:33 -0700 (PDT) Received: from localhost ([::1]:57200 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lSRea-0001Gy-2B for importer@patchew.org; Fri, 02 Apr 2021 17:48:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35828) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSRYs-0000h2-KB for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:38 -0400 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]:44624) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lSRYq-0007nh-B8 for qemu-devel@nongnu.org; Fri, 02 Apr 2021 17:42:38 -0400 Received: by mail-pl1-x636.google.com with SMTP id d8so3014491plh.11 for ; Fri, 02 Apr 2021 14:42:35 -0700 (PDT) Received: from localhost.localdomain (h216-228-167-147.bendor.dedicated.static.tds.net. [216.228.167.147]) by smtp.gmail.com with ESMTPSA id f16sm7923329pfj.220.2021.04.02.14.42.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 14:42:34 -0700 (PDT) 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=h30NLvQUFSmWb89iN67sfFCqk9/Ie+AiL5gYJeDwQgI=; b=mvKDcsa+ubRDjIzCpdjgbvNJ7KgkuYPaMr0XT3/wlRqu1+xhZrYaGqmhzuv2hC9cvf oa/zNPuz6l/qng8uNE3yUkt41VCd1NpA4mRzSqHImRXBx3llE5/srTTcifq3WyPj/JAk sbzUg9O4CGBMZ50A0rntuH1lGNKjSV1+6nUmTY/dYiSPQxt6XpoOljfrVMx9/Rs4DTGu 1sGQxo9rI8we7eo/N6lSnkh87OU6ne5IW7UOcgcLsT1cD+64E35t/u3C0759iArPI9xs zrdt+zvA9IFmsL4ZVuFoVr1ohdIfankKKf/4KFkn0xn2OFdJHzX5m/EQ11o6yPwst4pB GjIQ== 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=h30NLvQUFSmWb89iN67sfFCqk9/Ie+AiL5gYJeDwQgI=; b=r+tFs8Zr9QXObPCJlKTUzA8KDQhCQq5d0QGD0ZsUMPBv3PwmNx1Zf754d7uD+aFHs+ 0gry/y0WmA9HYB0h86DprHKjpE7ZUdbGo4e9xROCdPyaYkXf2W4QmHr7VUTD7T4zGOqM bYy5bwdWpBVjUxrn0C9K4jjleRh3pK3k/6NaiBI9e2iO+w/drCZYFVIGFMv18DBDDARB HFgbCwX7GjDG15hGZTOFZCdctPXrg0u8EY4L4W7Y25fcruAWY9uMFinw3DmwW/NVPFGK q3NNCxbjjffVmTr+0Et8Iw8430z7I9U/bQ/2Agr6QZ3Js9Bg6a26qVqzJFlbgrHUkM3n l0Zg== X-Gm-Message-State: AOAM531klVmjJ4wC1CembLDdK9EQZP3zdO5WMlZ0G6Y62XrVhK7uSIpM dP0pWuQY3S11E3zLAmW1Qdljuofgv7MhoQ== X-Google-Smtp-Source: ABdhPJy8hWsVg50A8Aaw3atJ9NbAq+TTkVxJkTTbfmjIhS5irATJnywoB6nfGMh/Fh3oYdu11DaIlw== X-Received: by 2002:a17:902:d895:b029:e6:f007:5bc with SMTP id b21-20020a170902d895b02900e6f00705bcmr14154463plz.76.1617399754796; Fri, 02 Apr 2021 14:42:34 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 11/11] target/arm: Remove log2_esize parameter to gen_mte_checkN Date: Fri, 2 Apr 2021 14:42:17 -0700 Message-Id: <20210402214217.422585-12-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210402214217.422585-1-richard.henderson@linaro.org> References: <20210402214217.422585-1-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::636; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x636.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: qemu-arm@nongnu.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 log2_esize parameter is not used except trivially. Drop the parameter and the deferral to gen_mte_check1. This fixes a bug in that the parameters as documented in the header file were the reverse from those in the implementation. Which meant that translate-sve.c was passing the parameters in the wrong order. Signed-off-by: Richard Henderson --- target/arm/translate-a64.h | 2 +- target/arm/translate-a64.c | 15 +++++++-------- target/arm/translate-sve.c | 4 ++-- 3 files changed, 10 insertions(+), 11 deletions(-) diff --git a/target/arm/translate-a64.h b/target/arm/translate-a64.h index 3668b671dd..868d355048 100644 --- a/target/arm/translate-a64.h +++ b/target/arm/translate-a64.h @@ -44,7 +44,7 @@ TCGv_i64 clean_data_tbi(DisasContext *s, TCGv_i64 addr); TCGv_i64 gen_mte_check1(DisasContext *s, TCGv_i64 addr, bool is_write, bool tag_checked, int log2_size); TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr, bool is_write, - bool tag_checked, int count, int log2_esize); + bool tag_checked, int size); =20 /* We should have at some point before trying to access an FP register * done the necessary access check, so assert that diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index a68d5dd5d1..f35a5e8174 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -295,9 +295,9 @@ TCGv_i64 gen_mte_check1(DisasContext *s, TCGv_i64 addr,= bool is_write, * For MTE, check multiple logical sequential accesses. */ TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr, bool is_write, - bool tag_checked, int log2_esize, int total_size) + bool tag_checked, int size) { - if (tag_checked && s->mte_active[0] && total_size !=3D (1 << log2_esiz= e)) { + if (tag_checked && s->mte_active[0]) { TCGv_i32 tcg_desc; TCGv_i64 ret; int desc =3D 0; @@ -306,7 +306,7 @@ TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr,= bool is_write, desc =3D FIELD_DP32(desc, MTEDESC, TBI, s->tbid); desc =3D FIELD_DP32(desc, MTEDESC, TCMA, s->tcma); desc =3D FIELD_DP32(desc, MTEDESC, WRITE, is_write); - desc =3D FIELD_DP32(desc, MTEDESC, SIZEM1, total_size - 1); + desc =3D FIELD_DP32(desc, MTEDESC, SIZEM1, size - 1); tcg_desc =3D tcg_const_i32(desc); =20 ret =3D new_tmp_a64(s); @@ -315,7 +315,7 @@ TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr,= bool is_write, =20 return ret; } - return gen_mte_check1(s, addr, is_write, tag_checked, log2_esize); + return clean_data_tbi(s, addr); } =20 typedef struct DisasCompare64 { @@ -2965,8 +2965,7 @@ static void disas_ldst_pair(DisasContext *s, uint32_t= insn) } =20 clean_addr =3D gen_mte_checkN(s, dirty_addr, !is_load, - (wback || rn !=3D 31) && !set_tag, - size, 2 << size); + (wback || rn !=3D 31) && !set_tag, 2 << si= ze); =20 if (is_vector) { if (is_load) { @@ -3713,7 +3712,7 @@ static void disas_ldst_multiple_struct(DisasContext *= s, uint32_t insn) * promote consecutive little-endian elements below. */ clean_addr =3D gen_mte_checkN(s, tcg_rn, is_store, is_postidx || rn != =3D 31, - size, total); + total); =20 /* * Consecutive little-endian elements from a single register @@ -3866,7 +3865,7 @@ static void disas_ldst_single_struct(DisasContext *s,= uint32_t insn) tcg_rn =3D cpu_reg_sp(s, rn); =20 clean_addr =3D gen_mte_checkN(s, tcg_rn, !is_load, is_postidx || rn != =3D 31, - scale, total); + total); =20 tcg_ebytes =3D tcg_const_i64(1 << scale); for (xs =3D 0; xs < selem; xs++) { diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 5179c1f836..584c4d047c 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -4264,7 +4264,7 @@ static void do_ldr(DisasContext *s, uint32_t vofs, in= t len, int rn, int imm) =20 dirty_addr =3D tcg_temp_new_i64(); tcg_gen_addi_i64(dirty_addr, cpu_reg_sp(s, rn), imm); - clean_addr =3D gen_mte_checkN(s, dirty_addr, false, rn !=3D 31, len, M= O_8); + clean_addr =3D gen_mte_checkN(s, dirty_addr, false, rn !=3D 31, len); tcg_temp_free_i64(dirty_addr); =20 /* @@ -4352,7 +4352,7 @@ static void do_str(DisasContext *s, uint32_t vofs, in= t len, int rn, int imm) =20 dirty_addr =3D tcg_temp_new_i64(); tcg_gen_addi_i64(dirty_addr, cpu_reg_sp(s, rn), imm); - clean_addr =3D gen_mte_checkN(s, dirty_addr, false, rn !=3D 31, len, M= O_8); + clean_addr =3D gen_mte_checkN(s, dirty_addr, false, rn !=3D 31, len); tcg_temp_free_i64(dirty_addr); =20 /* Note that unpredicated load/store of vector/predicate registers --=20 2.25.1