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Tue, 14 Dec 2021 18:11:45 -0600 From: Michael Roth To: CC: , Peter Maydell , Richard Henderson Subject: [PATCH 02/47] target/arm: Don't skip M-profile reset entirely in user mode Date: Tue, 14 Dec 2021 18:00:40 -0600 Message-ID: <20211215000125.378126-3-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211215000125.378126-1-michael.roth@amd.com> References: <20211215000125.378126-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2d0d4feb-5dbf-4fd2-a68e-08d9bf5f7b95 X-MS-TrafficTypeDiagnostic: CH2PR12MB4907:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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envelope-from=Michael.Roth@amd.com; helo=NAM10-DM6-obe.outbound.protection.outlook.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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Peter Maydell Currently all of the M-profile specific code in arm_cpu_reset() is inside a !defined(CONFIG_USER_ONLY) ifdef block. This is unintentional: it happened because originally the only M-profile-specific handling was the setup of the initial SP and PC from the vector table, which is system-emulation only. But then we added a lot of other M-profile setup to the same "if (ARM_FEATURE_M)" code block without noticing that it was all inside a not-user-mode ifdef. This has generally been harmless, but with the addition of v8.1M low-overhead-loop support we ran into a problem: the reset of FPSCR.LTPSIZE to 4 was only being done for system emulation mode, so if a user-mode guest tried to execute the LE instruction it would incorrectly take a UsageFault. Adjust the ifdefs so only the really system-emulation specific parts are covered. Because this means we now run some reset code that sets up initial values in the FPCCR and similar FPU related registers, explicitly set up the registers controlling FPU context handling in user-emulation mode so that the FPU works by design and not by chance. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/613 Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20210914120725.24992-2-peter.maydell@linaro.org (cherry picked from commit b62ceeaf8096fdbbbfdc6087da0028bc4a4dd77e) Signed-off-by: Michael Roth --- target/arm/cpu.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 2866dd7658..af60c07ca1 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -265,12 +265,15 @@ static void arm_cpu_reset(DeviceState *dev) env->uncached_cpsr = ARM_CPU_MODE_SVC; } env->daif = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F; +#endif if (arm_feature(env, ARM_FEATURE_M)) { +#ifndef CONFIG_USER_ONLY uint32_t initial_msp; /* Loaded from 0x0 */ uint32_t initial_pc; /* Loaded from 0x4 */ uint8_t *rom; uint32_t vecbase; +#endif if (cpu_isar_feature(aa32_lob, cpu)) { /* @@ -324,6 +327,8 @@ static void arm_cpu_reset(DeviceState *dev) env->v7m.fpccr[M_REG_S] = R_V7M_FPCCR_ASPEN_MASK | R_V7M_FPCCR_LSPEN_MASK | R_V7M_FPCCR_S_MASK; } + +#ifndef CONFIG_USER_ONLY /* Unlike A/R profile, M profile defines the reset LR value */ env->regs[14] = 0xffffffff; @@ -352,8 +357,22 @@ static void arm_cpu_reset(DeviceState *dev) env->regs[13] = initial_msp & 0xFFFFFFFC; env->regs[15] = initial_pc & ~1; env->thumb = initial_pc & 1; +#else + /* + * For user mode we run non-secure and with access to the FPU. + * The FPU context is active (ie does not need further setup) + * and is owned by non-secure. + */ + env->v7m.secure = false; + env->v7m.nsacr = 0xcff; + env->v7m.cpacr[M_REG_NS] = 0xf0ffff; + env->v7m.fpccr[M_REG_S] &= + ~(R_V7M_FPCCR_LSPEN_MASK | R_V7M_FPCCR_S_MASK); + env->v7m.control[M_REG_S] |= R_V7M_CONTROL_FPCA_MASK; +#endif } +#ifndef CONFIG_USER_ONLY /* AArch32 has a hard highvec setting of 0xFFFF0000. If we are currently * executing as AArch32 then check if highvecs are enabled and * adjust the PC accordingly. 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Tue, 14 Dec 2021 18:06:32 -0600 From: Michael Roth To: CC: , Jean-Philippe Brucker , Eric Auger , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson Subject: [PATCH 17/47] hw/arm/virt: Rename default_bus_bypass_iommu Date: Tue, 14 Dec 2021 18:00:55 -0600 Message-ID: <20211215000125.378126-18-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211215000125.378126-1-michael.roth@amd.com> References: <20211215000125.378126-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 293dfb42-b3a1-42b7-4fb1-08d9bf5ec0c9 X-MS-TrafficTypeDiagnostic: BYAPR12MB3624:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:628; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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envelope-from=Michael.Roth@amd.com; helo=NAM12-MW2-obe.outbound.protection.outlook.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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Jean-Philippe Brucker Since commit d8fb7d0969d5 ("vl: switch -M parsing to keyval"), machine parameter definitions cannot use underscores, because keyval_dashify() transforms them to dashes and the parser doesn't find the parameter. This affects option default_bus_bypass_iommu which was introduced in the same release: $ qemu-system-aarch64 -M virt,default_bus_bypass_iommu=on qemu-system-aarch64: Property 'virt-6.1-machine.default-bus-bypass-iommu' not found Rename the parameter to "default-bus-bypass-iommu". Passing "default_bus_bypass_iommu" is still valid since the underscore are transformed automatically. Fixes: 6d7a85483a06 ("hw/arm/virt: Add default_bus_bypass_iommu machine option") Signed-off-by: Jean-Philippe Brucker Tested-by: Eric Auger Reviewed-by: Eric Auger Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20211026093733.2144161-1-jean-philippe@linaro.org> Signed-off-by: Richard Henderson (cherry picked from commit 9dad363a223df8269175d218413aa8cd265e078e) Signed-off-by: Michael Roth --- hw/arm/virt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 81eda46b0b..106be60fd4 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -2677,10 +2677,10 @@ static void virt_machine_class_init(ObjectClass *oc, void *data) "Set the IOMMU type. " "Valid values are none and smmuv3"); - object_class_property_add_bool(oc, "default_bus_bypass_iommu", + object_class_property_add_bool(oc, "default-bus-bypass-iommu", virt_get_default_bus_bypass_iommu, virt_set_default_bus_bypass_iommu); - object_class_property_set_description(oc, "default_bus_bypass_iommu", + object_class_property_set_description(oc, "default-bus-bypass-iommu", "Set on/off to enable/disable " "bypass_iommu for default root bus"); From patchwork Wed Dec 15 00:00:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 523938 Delivered-To: patch@linaro.org Received: by 2002:a05:6e04:2287:0:0:0:0 with SMTP id bl7csp8185858imb; Tue, 14 Dec 2021 16:10:46 -0800 (PST) X-Google-Smtp-Source: ABdhPJwZO8qqxPhciTmTY+nsnEBoO0Rlu4kHLc8TkzWHPSE4Rn5qkeXlF0rHx00gFntuGp0lunvJ X-Received: by 2002:a25:c3:: with SMTP id 186mr2486730yba.24.1639527046190; Tue, 14 Dec 2021 16:10:46 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1639527046; cv=pass; d=google.com; s=arc-20160816; b=NlB9dtL4Pbo6DYq7PxZvh8fpCyVRX/LC6Q+9ffYYFtVV4CVTnw1zkfJRgDXIZaCplV 2VfX/RxnaTroDT+vh2wRvFYzIWN/BqCyAXY+qlMfwfeotI2nYBs3pgczk4NKgMhI9+ZR kOER0zH+ZGOr/B9OXImCzY4tZavfLh7O6zXh3c1in+7ofRsVkPCxL8grrZvldTcrNHLs 73gK+nWBIheA1W9R9y8rriMvcohyUkupoM6+UE0E9Vpj6y7xS/X4n8Fl9qS1cxDFdnS0 fyBjINNrPcI3u/fradkfutDkBiZsxeZyq99F/FnDFJ7w0hQzyUpSEDsTNsEDpi00clbU H6rg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=C6HA9xHW0rIbRYLi4CQzDQ7qsAC3V4YK/kUChnEVKuE=; b=E1qH0BnXKm2+jv2m+pqrPZN0P/8jmmL470y8S9BPH6BlJObToeGwyvPVPbI2Z15q3/ hc9BfgFD8buPJ3PeyOITCLKy551J+MZO1EW6/St6E2XwCGy5PAKMfw4qKb/sTqZ4jgM+ V+6MCuAuJ7vrGocfnaNi4iCuwMzSaj1FKBVBypeLq68lJQvcYhVqROvI7XlaKMUDnm8S OEV0QaPeu26hXnKF3btCpxpjbuqdtMo9JYIppGZipemwE7la0jhECUZOXj8XC46DTf+3 mig9WhspQvzRyT1A+Koe/wG0USFY4ySvNTO4mObGWKFSgChEZ6jwhzZ5DZ+NUJDs1FsY zJjA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=oZLVYi3e; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Return-Path: Received: from lists.gnu.org (lists.gnu.org. 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Tue, 14 Dec 2021 18:06:53 -0600 From: Michael Roth To: CC: , Jean-Philippe Brucker , Eric Auger , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Paolo Bonzini Subject: [PATCH 18/47] hw/i386: Rename default_bus_bypass_iommu Date: Tue, 14 Dec 2021 18:00:56 -0600 Message-ID: <20211215000125.378126-19-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211215000125.378126-1-michael.roth@amd.com> References: <20211215000125.378126-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 52130fb4-94bb-4ebe-418c-08d9bf5ecd82 X-MS-TrafficTypeDiagnostic: SA0PR12MB4557:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:612; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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envelope-from=Michael.Roth@amd.com; helo=NAM10-DM6-obe.outbound.protection.outlook.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 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, FORGED_SPF_HELO=1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, T_SPF_TEMPERROR=0.01 autolearn=no 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+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Jean-Philippe Brucker Since commit d8fb7d0969d5 ("vl: switch -M parsing to keyval"), machine parameter definitions cannot use underscores, because keyval_dashify() transforms them to dashes and the parser doesn't find the parameter. This affects option default_bus_bypass_iommu which was introduced in the same release: $ qemu-system-x86_64 -M q35,default_bus_bypass_iommu=on qemu-system-x86_64: Property 'pc-q35-6.1-machine.default-bus-bypass-iommu' not found Rename the parameter to "default-bus-bypass-iommu". Passing "default_bus_bypass_iommu" is still valid since the underscore are transformed automatically. Fixes: c9e96b04fc19 ("hw/i386: Add a default_bus_bypass_iommu pc machine option") Reviewed-by: Eric Auger Reviewed-by: Philippe Mathieu-Daudé Tested-by: Eric Auger Signed-off-by: Jean-Philippe Brucker Message-Id: <20211025104737.1560274-1-jean-philippe@linaro.org> Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini (cherry picked from commit 739b38630c45585cd9d372d44537f69c0b2b4346) Signed-off-by: Michael Roth --- hw/i386/pc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index c2b9d62a35..1d421ae2f8 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1763,7 +1763,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data) object_class_property_add_bool(oc, "hpet", pc_machine_get_hpet, pc_machine_set_hpet); - object_class_property_add_bool(oc, "default_bus_bypass_iommu", + object_class_property_add_bool(oc, "default-bus-bypass-iommu", pc_machine_get_default_bus_bypass_iommu, pc_machine_set_default_bus_bypass_iommu);