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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN3PEPF0000B371.mail.protection.outlook.com (10.167.243.168) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7828.11 via Frontend Transport; Fri, 2 Aug 2024 01:58:36 +0000 Received: from fritz.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 1 Aug 2024 20:58:35 -0500 From: Kim Phillips To: , , CC: Tom Lendacky , Michael Roth , Ashish Kalra , "Nikunj A Dadhania" , Borislav Petkov , Dave Hansen , Sean Christopherson , "Paolo Bonzini" , Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , "Kishon Vijay Abraham I" , Kim Phillips Subject: [PATCH 1/2] x86/cpufeatures: Add "Allowed SEV Features" Feature Date: Thu, 1 Aug 2024 20:57:31 -0500 Message-ID: <20240802015732.3192877-2-kim.phillips@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240802015732.3192877-1-kim.phillips@amd.com> References: <20240802015732.3192877-1-kim.phillips@amd.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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-TrafficTypeDiagnostic: BN3PEPF0000B371:EE_|DS0PR12MB7900:EE_ X-MS-Office365-Filtering-Correlation-Id: ab30985c-0758-44e5-a52c-08dcb2969f8d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|7416014|376014; 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:(13230040)(1800799024)(36860700013)(82310400026)(7416014)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Aug 2024 01:58:36.9904 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ab30985c-0758-44e5-a52c-08dcb2969f8d 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: BN3PEPF0000B371.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7900 From: Kishon Vijay Abraham I Add CPU feature detection for "Allowed SEV Features" to allow the Hypervisor to enforce that SEV-ES and SEV-SNP guest VMs cannot enable features (via SEV_FEATURES) that the Hypervisor does not support or wish to be enabled. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Kim Phillips --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index dd4682857c12..0c73da91a041 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -447,6 +447,7 @@ #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* Virtual TSC_AUX */ #define X86_FEATURE_SME_COHERENT (19*32+10) /* AMD hardware-enforced cache coherency */ #define X86_FEATURE_DEBUG_SWAP (19*32+14) /* "debug_swap" AMD SEV-ES full debug state swap support */ +#define X86_FEATURE_ALLOWED_SEV_FEATURES (19*32+27) /* AMD Allowed SEV Features */ #define X86_FEATURE_SVSM (19*32+28) /* "svsm" SVSM present */ /* AMD-defined Extended Feature 2 EAX, CPUID level 0x80000021 (EAX), word 20 */