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David Alan Gilbert" , , , , , Brijesh Singh , Venu Busireddy Subject: [PATCH v12 01/46] KVM: SVM: Define sev_features and vmpl field in the VMSA Date: Mon, 7 Mar 2022 15:33:11 -0600 Message-ID: <20220307213356.2797205-2-brijesh.singh@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220307213356.2797205-1-brijesh.singh@amd.com> References: <20220307213356.2797205-1-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: 714cea4e-6488-4e95-ee72-08da00823dc8 X-MS-TrafficTypeDiagnostic: DM6PR12MB4451:EE_ X-Microsoft-Antispam-PRVS: 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)(36840700001)(46966006)(40470700004)(4326008)(2906002)(40460700003)(86362001)(186003)(16526019)(426003)(336012)(8676002)(83380400001)(7696005)(47076005)(70586007)(70206006)(1076003)(316002)(36756003)(54906003)(8936002)(2616005)(508600001)(110136005)(26005)(36860700001)(6666004)(356005)(81166007)(82310400004)(5660300002)(7416002)(7406005)(44832011)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Mar 2022 21:34:20.8048 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 714cea4e-6488-4e95-ee72-08da00823dc8 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: BN8NAM11FT056.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4451 X-Rspamd-Queue-Id: 5B09D40008 X-Stat-Signature: k45eipxrrzxatze188pakj5izhhtsbsx X-Rspam-User: Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=mcJA+WPg; spf=pass (imf01.hostedemail.com: domain of brijesh.singh@amd.com designates 40.107.94.82 as permitted sender) smtp.mailfrom=brijesh.singh@amd.com; dmarc=pass (policy=quarantine) header.from=amd.com X-Rspamd-Server: rspam07 X-HE-Tag: 1646688864-70230 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 bb2fb78523ce..b25b4e5ae6f9 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -274,7 +274,8 @@ 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; @@ -339,7 +340,8 @@ 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 fd3a00c892c7..fd92af40c280 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3118,8 +3118,8 @@ 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",