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David Alan Gilbert" , , , , , Brijesh Singh , Venu Busireddy Subject: [PATCH v10 01/45] KVM: SVM: Define sev_features and vmpl field in the VMSA Date: Wed, 9 Feb 2022 12:09:55 -0600 Message-ID: <20220209181039.1262882-2-brijesh.singh@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220209181039.1262882-1-brijesh.singh@amd.com> References: <20220209181039.1262882-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8af501bd-bd88-4466-5803-08d9ebf79775 X-MS-TrafficTypeDiagnostic: BN7PR12MB2802:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; 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;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230001)(4636009)(40470700004)(36840700001)(46966006)(47076005)(4326008)(5660300002)(7416002)(8676002)(7406005)(40460700003)(83380400001)(81166007)(356005)(2906002)(36756003)(82310400004)(8936002)(508600001)(44832011)(54906003)(6666004)(2616005)(16526019)(336012)(186003)(426003)(1076003)(316002)(36860700001)(110136005)(7696005)(86362001)(26005)(70206006)(70586007)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Feb 2022 18:11:27.9353 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8af501bd-bd88-4466-5803-08d9ebf79775 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT005.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR12MB2802 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org The hypervisor uses the sev_features field (offset 3B0h) in the Save State Area to control the SEV-SNP guest features such as SNPActive, vTOM, ReflectVC etc. An SEV-SNP guest can read the SEV_FEATURES fields through the SEV_STATUS MSR. While at it, update the dump_vmcb() to log the VMPL level. See APM2 Table 15-34 and B-4 for more details. Reviewed-by: Venu Busireddy Signed-off-by: Brijesh Singh --- arch/x86/include/asm/svm.h | 6 ++++-- arch/x86/kvm/svm/svm.c | 4 ++-- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index b00dbc5fac2b..7c9cf4f3c164 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -238,7 +238,8 @@ struct vmcb_save_area { struct vmcb_seg ldtr; struct vmcb_seg idtr; struct vmcb_seg tr; - u8 reserved_1[43]; + u8 reserved_1[42]; + u8 vmpl; u8 cpl; u8 reserved_2[4]; u64 efer; @@ -303,7 +304,8 @@ struct vmcb_save_area { u64 sw_exit_info_1; u64 sw_exit_info_2; u64 sw_scratch; - u8 reserved_11[56]; + u64 sev_features; + u8 reserved_11[48]; u64 xcr0; u8 valid_bitmap[16]; u64 x87_state_gpa; diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index a290efb272ad..cb447eecb9ac 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3095,8 +3095,8 @@ static void dump_vmcb(struct kvm_vcpu *vcpu) "tr:", save01->tr.selector, save01->tr.attrib, save01->tr.limit, save01->tr.base); - pr_err("cpl: %d efer: %016llx\n", - save->cpl, save->efer); + pr_err("vmpl: %d cpl: %d efer: %016llx\n", + save->vmpl, save->cpl, save->efer); pr_err("%-15s %016llx %-13s %016llx\n", "cr0:", save->cr0, "cr2:", save->cr2); pr_err("%-15s %016llx %-13s %016llx\n",