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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; Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT019.mail.protection.outlook.com (10.13.176.158) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4975.11 via Frontend Transport; Fri, 11 Feb 2022 21:06:08 +0000 Received: from localhost.localdomain (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 15.1.2375.18; Fri, 11 Feb 2022 15:06:06 -0600 From: Mario Limonciello To: Borislav Petkov , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" CC: Kees Cook , Thomas Lendacky , , Martin Fernandez , , "Brijesh Singh" , Mario Limonciello Subject: [PATCH v2 1/4] crypto: ccp: Use cc_platform_has to determine SEV presence Date: Fri, 11 Feb 2022 15:02:52 -0600 Message-ID: <20220211210255.9820-2-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220211210255.9820-1-mario.limonciello@amd.com> References: <20220211210255.9820-1-mario.limonciello@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] 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-Office365-Filtering-Correlation-Id: 634e93b0-aeaa-4ed9-8bc9-08d9eda25308 X-MS-TrafficTypeDiagnostic: MN2PR12MB4127:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Feb 2022 21:06:08.2564 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 634e93b0-aeaa-4ed9-8bc9-08d9eda25308 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: BN8NAM11FT019.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4127 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The CPU feature flag shouldn't be used to determine if SEV is active, that's what `cc_platform_has` is for. Signed-off-by: Mario Limonciello --- drivers/crypto/ccp/sev-dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 8fd774a10edc..e061eb6a039c 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -1148,7 +1148,7 @@ int sev_dev_init(struct psp_device *psp) struct sev_device *sev; int ret = -ENOMEM; - if (!boot_cpu_has(X86_FEATURE_SEV)) { + if (!cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) { dev_info_once(dev, "SEV: memory encryption not enabled by BIOS\n"); return 0; } -- 2.34.1