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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 CY4PEPF0000E9D7.mail.protection.outlook.com (10.167.241.78) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7452.22 via Frontend Transport; Tue, 9 Apr 2024 20:42:57 +0000 Received: from ethanolx7e2ehost.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 15.1.2507.35; Tue, 9 Apr 2024 15:42:47 -0500 From: Ashish Kalra To: , , , , CC: , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 2/4] x86/sev: add sev_es_enabled() function. Date: Tue, 9 Apr 2024 20:42:38 +0000 Message-ID: <906e037ecd7592eba859448606b028a68a5d48f8.1712694667.git.ashish.kalra@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: <20240409113010.465412-1-kirill.shutemov@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D7:EE_|PH8PR12MB7184:EE_ X-MS-Office365-Filtering-Correlation-Id: 3a2aa275-079a-4393-3053-08dc58d5a3cb 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:(13230031)(36860700004)(82310400014)(376005)(1800799015)(7416005);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Apr 2024 20:42:57.7017 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3a2aa275-079a-4393-3053-08dc58d5a3cb 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: CY4PEPF0000E9D7.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7184 Content-Type: text/plain; charset="utf-8" From: Ashish Kalra Add sev_es_enabled() function to detect if SEV-ES support is enabled. Signed-off-by: Ashish Kalra Reviewed-by: Kuppuswamy Sathyanarayanan --- arch/x86/boot/compressed/sev.c | 5 +++++ arch/x86/boot/compressed/sev.h | 2 ++ 2 files changed, 7 insertions(+) diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index ec71846d28c9..4ae4cc51e6b8 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -134,6 +134,11 @@ bool sev_snp_enabled(void) return sev_status & MSR_AMD64_SEV_SNP_ENABLED; } =20 +bool sev_es_enabled(void) +{ + return sev_status & MSR_AMD64_SEV_ES_ENABLED; +} + static void __page_state_change(unsigned long paddr, enum psc_op op) { u64 val; diff --git a/arch/x86/boot/compressed/sev.h b/arch/x86/boot/compressed/sev.h index fc725a981b09..5008c80e66e6 100644 --- a/arch/x86/boot/compressed/sev.h +++ b/arch/x86/boot/compressed/sev.h @@ -11,11 +11,13 @@ #ifdef CONFIG_AMD_MEM_ENCRYPT =20 bool sev_snp_enabled(void); +bool sev_es_enabled(void); void snp_accept_memory(phys_addr_t start, phys_addr_t end); =20 #else =20 static inline bool sev_snp_enabled(void) { return false; } +static inline bool sev_es_enabled(void) { return false; } static inline void snp_accept_memory(phys_addr_t start, phys_addr_t end) {= } =20 #endif --=20 2.34.1