From patchwork Wed Aug 9 12:37:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 13347891 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3E7B2C0015E for ; Wed, 9 Aug 2023 12:39:25 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qTiRI-0002aW-Dm; Wed, 09 Aug 2023 08:37:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qTiRF-0002Xr-GZ for qemu-devel@nongnu.org; Wed, 09 Aug 2023 08:37:21 -0400 Received: from mail-wr1-x42c.google.com ([2a00:1450:4864:20::42c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qTiRC-0002oE-Ax for qemu-devel@nongnu.org; Wed, 09 Aug 2023 08:37:21 -0400 Received: by mail-wr1-x42c.google.com with SMTP id ffacd0b85a97d-3178dd771ceso5778559f8f.2 for ; Wed, 09 Aug 2023 05:37:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1691584636; x=1692189436; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FhowOvdNoqNAM56f9usHlhnKbRslUqskM9I47IE0+fw=; b=EMjHJ1r+b8XiGXmjgO2S6RSoXBLpgmIRwJwCyUr6+VNB9YBM9dQUuN/wF2b9HdDfG6 8dZ9DYaAliGK+yTGHsH/n3EJsbIiHVdk6gomzwM9XtT+FpBj+tdHT+dEUYJQ15640GPH uG41gQupG8CZHR3Zs4/h2ygWdMKd2hV/PjzY91RlrZkG0ELlAsvFsXX1/i6IrXExoD98 icWIMvZYUxIIktlY680bBD0phZlVzPIb5OcivbjZGCJiOt0MP7GfOOSs9rQ9rCkVElzQ jJe/1Vk6aK0Hi3xp+gmtJ/aaUjYZqurACEp4TUDBk6I1KohdRlPP9yX44Uf8pzcJAxPj cEBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691584636; x=1692189436; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FhowOvdNoqNAM56f9usHlhnKbRslUqskM9I47IE0+fw=; b=H6X7t1z7N8jQLVQ/pCXiXkw4HKSXTulykkDWfJdZsGwPFr0N43a4Th4pMg0q4qHY3J Af99umrlaNb7k1aTi/CxF4AlrAWk6D+rlYE49v5GEGuJfxdShRSVsXkx7Wb7RFdVKwtf AHX7TncroA1c24xZLVciCyxtYxjuX71wSVjUW39SSgWOEDhN4dZUt1p5/qqnbHOFlcRG B38frX07Kf8BevKQIIqmDddcrTLCwNP2r47QyILO8IkKEK++S5IwmWCWGo/lj7EnpTS/ 9ChOkADRRwrX58Eoosc8shooACLvKzMp9QX6t31oM8TFErpefwCDWt+GBDahGPZgMIB+ aW2A== X-Gm-Message-State: AOJu0YyO7mLaB2jE+CkVNJfNr1i+Swc4tcnZB3qPxCSg5vf+xbS3h22u K5XZ1qf8jq1dEfj4LsxLo8echg== X-Google-Smtp-Source: AGHT+IHePgkjLAKpBsJkB3idsd+1+oAM6Dfu8zE8XSD3fyxmXOGgG8uGbHWuyJnMFeItXNU0Y9U+3w== X-Received: by 2002:a5d:4d83:0:b0:314:2e77:afec with SMTP id b3-20020a5d4d83000000b003142e77afecmr1664367wru.57.1691584636287; Wed, 09 Aug 2023 05:37:16 -0700 (PDT) Received: from localhost.localdomain ([2.219.138.198]) by smtp.gmail.com with ESMTPSA id k6-20020a5d5246000000b00317f70240afsm5617888wrc.27.2023.08.09.05.37.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Aug 2023 05:37:16 -0700 (PDT) From: Jean-Philippe Brucker To: peter.maydell@linaro.org Cc: richard.henderson@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, Jean-Philippe Brucker Subject: [PATCH v3 3/6] target/arm: Skip granule protection checks for AT instructions Date: Wed, 9 Aug 2023 13:37:03 +0100 Message-ID: <20230809123706.1842548-4-jean-philippe@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809123706.1842548-1-jean-philippe@linaro.org> References: <20230809123706.1842548-1-jean-philippe@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42c; envelope-from=jean-philippe@linaro.org; helo=mail-wr1-x42c.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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org GPC checks are not performed on the output address for AT instructions, as stated by ARM DDI 0487J in D8.12.2: When populating PAR_EL1 with the result of an address translation instruction, granule protection checks are not performed on the final output address of a successful translation. Rename get_phys_addr_with_secure(), since it's only used to handle AT instructions. Signed-off-by: Jean-Philippe Brucker Reviewed-by: Peter Maydell --- target/arm/internals.h | 25 ++++++++++++++----------- target/arm/helper.c | 8 ++++++-- target/arm/ptw.c | 11 ++++++----- 3 files changed, 26 insertions(+), 18 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index 0f01bc32a8..fc90c364f7 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1190,12 +1190,11 @@ typedef struct GetPhysAddrResult { } GetPhysAddrResult; /** - * get_phys_addr_with_secure: get the physical address for a virtual address + * get_phys_addr: get the physical address for a virtual address * @env: CPUARMState * @address: virtual address to get physical address for * @access_type: 0 for read, 1 for write, 2 for execute * @mmu_idx: MMU index indicating required translation regime - * @is_secure: security state for the access * @result: set on translation success. * @fi: set to fault info if the translation fails * @@ -1212,26 +1211,30 @@ typedef struct GetPhysAddrResult { * * for PSMAv5 based systems we don't bother to return a full FSR format * value. */ -bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, - MMUAccessType access_type, - ARMMMUIdx mmu_idx, bool is_secure, - GetPhysAddrResult *result, ARMMMUFaultInfo *fi) +bool get_phys_addr(CPUARMState *env, target_ulong address, + MMUAccessType access_type, ARMMMUIdx mmu_idx, + GetPhysAddrResult *result, ARMMMUFaultInfo *fi) __attribute__((nonnull)); /** - * get_phys_addr: get the physical address for a virtual address + * get_phys_addr_with_secure_nogpc: get the physical address for a virtual + * address * @env: CPUARMState * @address: virtual address to get physical address for * @access_type: 0 for read, 1 for write, 2 for execute * @mmu_idx: MMU index indicating required translation regime + * @is_secure: security state for the access * @result: set on translation success. * @fi: set to fault info if the translation fails * - * Similarly, but use the security regime of @mmu_idx. + * Similar to get_phys_addr, but use the given security regime and don't perform + * a Granule Protection Check on the resulting address. */ -bool get_phys_addr(CPUARMState *env, target_ulong address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - GetPhysAddrResult *result, ARMMMUFaultInfo *fi) +bool get_phys_addr_with_secure_nogpc(CPUARMState *env, target_ulong address, + MMUAccessType access_type, + ARMMMUIdx mmu_idx, bool is_secure, + GetPhysAddrResult *result, + ARMMMUFaultInfo *fi) __attribute__((nonnull)); bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address, diff --git a/target/arm/helper.c b/target/arm/helper.c index a4c2c1bde5..427de6bd2a 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -3365,8 +3365,12 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value, ARMMMUFaultInfo fi = {}; GetPhysAddrResult res = {}; - ret = get_phys_addr_with_secure(env, value, access_type, mmu_idx, - is_secure, &res, &fi); + /* + * I_MXTJT: Granule protection checks are not performed on the final address + * of a successful translation. + */ + ret = get_phys_addr_with_secure_nogpc(env, value, access_type, mmu_idx, + is_secure, &res, &fi); /* * ATS operations only do S1 or S1+S2 translations, so we never diff --git a/target/arm/ptw.c b/target/arm/ptw.c index 063adbd84a..33179f3471 100644 --- a/target/arm/ptw.c +++ b/target/arm/ptw.c @@ -3418,16 +3418,17 @@ static bool get_phys_addr_gpc(CPUARMState *env, S1Translate *ptw, return false; } -bool get_phys_addr_with_secure(CPUARMState *env, target_ulong address, - MMUAccessType access_type, ARMMMUIdx mmu_idx, - bool is_secure, GetPhysAddrResult *result, - ARMMMUFaultInfo *fi) +bool get_phys_addr_with_secure_nogpc(CPUARMState *env, target_ulong address, + MMUAccessType access_type, + ARMMMUIdx mmu_idx, bool is_secure, + GetPhysAddrResult *result, + ARMMMUFaultInfo *fi) { S1Translate ptw = { .in_mmu_idx = mmu_idx, .in_space = arm_secure_to_space(is_secure), }; - return get_phys_addr_gpc(env, &ptw, address, access_type, result, fi); + return get_phys_addr_nogpc(env, &ptw, address, access_type, result, fi); } bool get_phys_addr(CPUARMState *env, target_ulong address,