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Received: from DM6PR12MB3163.namprd12.prod.outlook.com (2603:10b6:5:15e::26) by DM6PR12MB3673.namprd12.prod.outlook.com (2603:10b6:5:1c5::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2921.29; Wed, 22 Apr 2020 17:43:18 +0000 Received: from DM6PR12MB3163.namprd12.prod.outlook.com ([fe80::9ae:cb95:c925:d5bf]) by DM6PR12MB3163.namprd12.prod.outlook.com ([fe80::9ae:cb95:c925:d5bf%4]) with mapi id 15.20.2921.030; Wed, 22 Apr 2020 17:43:18 +0000 From: "Lendacky, Thomas" To: devel@edk2.groups.io Cc: Jordan Justen , Laszlo Ersek , Ard Biesheuvel , Michael D Kinney , Liming Gao , Eric Dong , Ray Ni , Brijesh Singh Subject: [PATCH v7 36/43] OvmfPkg/Sec: Enable cache early to speed up booting Date: Wed, 22 Apr 2020 12:41:51 -0500 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: X-ClientProxiedBy: DM5PR04CA0060.namprd04.prod.outlook.com (2603:10b6:3:ef::22) To DM6PR12MB3163.namprd12.prod.outlook.com (2603:10b6:5:15e::26) Return-Path: thomas.lendacky@amd.com MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from tlendack-t1.amd.com (165.204.77.1) by DM5PR04CA0060.namprd04.prod.outlook.com (2603:10b6:3:ef::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2937.13 via Frontend Transport; Wed, 22 Apr 2020 17:42:51 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [165.204.77.1] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: e302a87b-dd7c-4e2c-42f4-08d7e6e49486 X-MS-TrafficTypeDiagnostic: DM6PR12MB3673:|DM6PR12MB3673: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; X-Forefront-PRVS: 03818C953D X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR12MB3163.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(10009020)(4636009)(346002)(136003)(396003)(366004)(39860400002)(376002)(16526019)(186003)(8936002)(8676002)(956004)(4326008)(316002)(6916009)(86362001)(2616005)(36756003)(26005)(52116002)(7696005)(5660300002)(2906002)(478600001)(81156014)(966005)(66556008)(66946007)(66476007)(6486002)(54906003)(136400200001);DIR:OUT;SFP:1101; Received-SPF: None (protection.outlook.com: amd.com does not designate permitted sender hosts) X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: B6TJa1mqIIEHZLYEeWlAU8OL1vrb/qcAfIjxtg/WpJcgjPu5w8fjxEIgI+uwLOTESY3AqbrvjoUYbwHCwPHDIIAU0QMJqCaSQjylR7cU+oW9VPY4qgNcd3e6o8xr0YjELLFoS0InODuHFHBK4gSL6Ok1CUCOPo84uj37W12PfRww8beVfjikEI12Yv4SJfyn7rWIZ/jlr9++jPd27dYCKarGazRb6iR6hGDbrSOC6Is1nOGHmtF0ysYJXbUtnFUFFGz3ptm5dIaInJwhRe557/4exMXMGT5c79+DwxamhfDfZ/RX0IBdZhqFoonrJ/Gy0Vv5yrtjlU7ddhzPuE9DFPbhJ+ijgeCNpbBbgs7StW+kaH/uf0RlAOw9G7kySF3PMa8OcGUABt/vELdDs0Jb02JZucD7lNn52C171Am9Ia9qpEIkezXe/fhHZn8hQ/v/o2bGbBVnPvBs5p32rOwYWpn7Vm/OdN8p6kcVUyFTJJyoN4pH7DmcBh9rXqHOuKx2dAoECHjYHsqmr9UHs2gq/dzMLfYQUUlmxjbqd3L3vNsFrDWBZk5zSqdiwqTvVHgeUBqZV6LjKaa66fRBi/V7rQ== X-MS-Exchange-AntiSpam-MessageData: Oj1zv0IPTUrVVRw/PT5Qf/IKfHpp8+Phr2jUlTTUQSAv0db6ArQ5mSWkfumM+Z4mqoZ98nEMBMiw/C5cArZixNfuQTei0DGV+tf/CU37LS5JlxcHjqYZq70wetoSWrPgcJdA8ay/21j67BHIEdk8fQ== X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: e302a87b-dd7c-4e2c-42f4-08d7e6e49486 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Apr 2020 17:42:51.6542 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: FnC89+s/UX7odF6bYV33wgIikwc2z7kR9TbwYKLYXgTcmjpYV/3UgLmm//OwvNiX/uxG2eUftp2C6z+dB36qtw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3673 Content-Type: text/plain BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198 Currently, the OVMF code relies on the hypervisor to enable the cache support on the processor in order to improve the boot speed. However, with SEV-ES, the hypervisor is not allowed to change the CR0 register to enable caching. Update the OVMF Sec support to enable caching in order to improve the boot speed when running as an SEV-ES guest. Cc: Jordan Justen Cc: Laszlo Ersek Cc: Ard Biesheuvel Reviewed-by: Laszlo Ersek Signed-off-by: Tom Lendacky --- OvmfPkg/Sec/SecMain.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/OvmfPkg/Sec/SecMain.c b/OvmfPkg/Sec/SecMain.c index 4acfce8086e7..e0c81067e8c7 100644 --- a/OvmfPkg/Sec/SecMain.c +++ b/OvmfPkg/Sec/SecMain.c @@ -905,6 +905,13 @@ SecCoreStartupWithStack ( // For non SEV-ES guests, just load the IDTR. // AsmWriteIdtr (&IdtDescriptor); + } else { + // + // Under SEV-ES, the hypervisor can't modify CR0 and so can't enable + // caching in order to speed up the boot. Enable caching early for + // an SEV-ES guest. + // + AsmEnableCache (); } DEBUG ((EFI_D_INFO, -- 2.17.1