From nobody Thu Sep 18 20:27:17 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADE1FC47088 for ; Sat, 3 Dec 2022 03:05:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234490AbiLCDFx (ORCPT ); Fri, 2 Dec 2022 22:05:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230483AbiLCDFp (ORCPT ); Fri, 2 Dec 2022 22:05:45 -0500 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75EE4F4EA3 for ; Fri, 2 Dec 2022 19:05:44 -0800 (PST) Received: by mail-pj1-x102f.google.com with SMTP id b11so6586248pjp.2 for ; Fri, 02 Dec 2022 19:05:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20210112.gappssmtp.com; s=20210112; h=to:from:cc:content-transfer-encoding:mime-version:references :in-reply-to:message-id:date:subject:from:to:cc:subject:date :message-id:reply-to; bh=oUHGCrN2/GzmAYwHPUyKBA8Ge6xsvUhA3e+Vb+bqY68=; b=GTPXNM4I8XSeRWKFJbfehEVG870eOYMF/pKY9yMWeVjzuXAmyGPMV5Nuhgkd2Rpezc s+BSs8uV7IDAeaosxWjvuIEHbnwRyildLgIAk88UrLwNCF86OOw+gvsvp87gvdO7j5yY khg7Alr0W4R4/KHofpJ9D+lLwLem7Qb0wpi6ArvXA+llBKDEm0aE2tH//UDUW/zvNNNy gfVSZqmFmW+aoOXgq4s35qIFSAZ9WmYlvLQAEJEUCLULeQimBikv4W8YGE42LNgyHFBS veDXzJC3LeHh7Nnv4F5UhC6Q9SyzW2T+bBN93Ioth3DJNcJNlGBAnbsRy+dlZx3PTjOZ 6m8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:cc:content-transfer-encoding:mime-version:references :in-reply-to:message-id:date:subject:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=oUHGCrN2/GzmAYwHPUyKBA8Ge6xsvUhA3e+Vb+bqY68=; b=bQPq/X5HZ4g1ishzuC9sXBOYLAwhZPSxDmZohAorpM3yYuDLijRJKlOLqzITzyL/ye 960cC+sptE08o63cWt9SiGs3PQlH2m/AeS1OZeGSAWU9PFUJQ6IAFDmV8GyLdT5l1mhX h8K74eW6FB9hLGldw+YqNkiIG4hOuv+clTZgEblLxr/HG3xCJmNOovsPHqZO/8E2Z5n2 A8m1RJBV6bijz9peBlt6LJNEBtevITpge7y9gcGkVi7V23797QfM2+AlwdzNFuxp9hEI 7eEXvd4tGsGsvP8cLg8+5fK8BhL5D9NtS5HxT87bybWaIz3Uw6dFYUf1nuidVwheIThc WvKg== X-Gm-Message-State: ANoB5pmTn2rNZ682OSV/NZi6XZNWY+uzZLVmc+jE7pbbzJDt0+PWz3an jKVYVBLGTI0vq/9COoRN/LrJwA== X-Google-Smtp-Source: AA0mqf6uIzMwjns2LD/gQeHWIsS+ZDiU1QORTWoif/bzBJr4V+crCrb3KCajLaMXkOYnYMNn1jPFyA== X-Received: by 2002:a17:90b:609:b0:219:3ad9:64f5 with SMTP id gb9-20020a17090b060900b002193ad964f5mr29166277pjb.138.1670036743958; Fri, 02 Dec 2022 19:05:43 -0800 (PST) Received: from localhost ([50.221.140.188]) by smtp.gmail.com with ESMTPSA id b2-20020a62a102000000b005745635c5b5sm5713256pff.183.2022.12.02.19.05.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Dec 2022 19:05:43 -0800 (PST) Subject: [PATCH 2/5] mm: Add VM_FAULT_ARCH_* codes Date: Fri, 2 Dec 2022 19:03:53 -0800 Message-Id: <20221203030356.3917-3-palmer@rivosinc.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221203030356.3917-1-palmer@rivosinc.com> References: <20221203030356.3917-1-palmer@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Cc: Palmer Dabbelt From: Palmer Dabbelt To: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" A handful of architectures (arm, s390, and soon RISC-V) define their own internal fault codes, so instead dedicate a few standard codes as being architecture-specific to avoid conflicts. Signed-off-by: Palmer Dabbelt --- include/linux/mm_types.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 758eb70829cb..df1aa8d58444 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -880,6 +880,11 @@ enum vm_fault_reason { VM_FAULT_NEEDDSYNC =3D (__force vm_fault_t)0x0002000, VM_FAULT_COMPLETED =3D (__force vm_fault_t)0x0004000, VM_FAULT_HINDEX_MASK =3D (__force vm_fault_t)0x00f0000, + VM_FAULT_ARCH_0 =3D (__force vm_fault_t)0x0100000, + VM_FAULT_ARCH_1 =3D (__force vm_fault_t)0x0200000, + VM_FAULT_ARCH_2 =3D (__force vm_fault_t)0x0400000, + VM_FAULT_ARCH_3 =3D (__force vm_fault_t)0x0800000, + VM_FAULT_ARCH_4 =3D (__force vm_fault_t)0x1000000, }; =20 /* Encode hstate index for a hwpoisoned large page */ @@ -903,7 +908,12 @@ enum vm_fault_reason { { VM_FAULT_RETRY, "RETRY" }, \ { VM_FAULT_FALLBACK, "FALLBACK" }, \ { VM_FAULT_DONE_COW, "DONE_COW" }, \ - { VM_FAULT_NEEDDSYNC, "NEEDDSYNC" } + { VM_FAULT_NEEDDSYNC, "NEEDDSYNC" }, \ + { VM_FAULT_ARCH_0, "ARCH_0" }, \ + { VM_FAULT_ARCH_1, "ARCH_1" }, \ + { VM_FAULT_ARCH_2, "ARCH_2" }, \ + { VM_FAULT_ARCH_3, "ARCH_3" }, \ + { VM_FAULT_ARCH_4, "ARCH_4" }, \ =20 struct vm_special_mapping { const char *name; /* The name, e.g. "[vdso]". */ --=20 2.38.1