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Mon, 9 Dec 2024 23:26:48 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; 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 SA2PEPF00003F63.mail.protection.outlook.com (10.167.248.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8230.7 via Frontend Transport; Mon, 9 Dec 2024 23:26:47 +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 15.1.2507.39; Mon, 9 Dec 2024 17:26:46 -0600 From: Ashish Kalra To: , , , , , , , , , , , CC: , , , , , Subject: [PATCH 7/7] crypto: ccp: Move SEV/SNP Platform initialization to KVM Date: Mon, 9 Dec 2024 23:26:37 +0000 Message-ID: <9ab04dfe22c067eb412ed4198b26c5d1482c6c22.1733785468.git.ashish.kalra@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: SA2PEPF00003F63:EE_|SN7PR12MB7249:EE_ X-MS-Office365-Filtering-Correlation-Id: ee84bfba-3cb7-48f0-a7e4-08dd18a8f379 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|7416014|1800799024|36860700013|921020; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Dec 2024 23:26:47.4105 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ee84bfba-3cb7-48f0-a7e4-08dd18a8f379 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: SA2PEPF00003F63.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7249 From: Ashish Kalra SNP initialization is forced during PSP driver probe purely because SNP can't be initialized if VMs are running. But the only in-tree user of SEV/SNP functionality is KVM, and KVM depends on PSP driver for the same. Forcing SEV/SNP initialization because a hypervisor could be running legacy non-confidential VMs make no sense. This patch removes SEV/SNP initialization from the PSP driver probe time and moves the requirement to initialize SEV/SNP functionality to KVM if it wants to use SEV/SNP. Signed-off-by: Ashish Kalra --- drivers/crypto/ccp/sev-dev.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index b8938c96915b..52dce46745ba 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -2528,9 +2528,7 @@ EXPORT_SYMBOL_GPL(sev_issue_cmd_external_user); void sev_pci_init(void) { struct sev_device *sev = psp_master->sev_data; - struct sev_platform_init_args args = {0}; u8 api_major, api_minor, build; - int rc; if (!sev) return; @@ -2553,16 +2551,6 @@ void sev_pci_init(void) api_major, api_minor, build, sev->api_major, sev->api_minor, sev->build); - /* Initialize the platform */ - args.probe = true; - rc = sev_platform_init(&args); - if (rc) - dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n", - args.error, rc); - - dev_info(sev->dev, "SEV%s API:%d.%d build:%d\n", sev->snp_initialized ? - "-SNP" : "", sev->api_major, sev->api_minor, sev->build); - return; err: @@ -2577,7 +2565,4 @@ void sev_pci_exit(void) if (!sev) return; - - sev_firmware_shutdown(sev); - }