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Fri, 27 Feb 2026 11:28:26 +0000 Date: Fri, 27 Feb 2026 19:28:15 +0800 From: Chao Gao To: Sean Christopherson CC: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , , Kiryl Shutsemau , Peter Zijlstra , Arnaldo Carvalho de Melo , "Namhyung Kim" , Paolo Bonzini , , , , , Xu Yilun , Dan Williams Subject: Re: [PATCH v3 11/16] KVM: x86/tdx: Do VMXON and TDX-Module initialization during subsys init Message-ID: References: <20260214012702.2368778-1-seanjc@google.com> <20260214012702.2368778-12-seanjc@google.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260214012702.2368778-12-seanjc@google.com> X-ClientProxiedBy: SI1PR02CA0045.apcprd02.prod.outlook.com (2603:1096:4:1f6::16) To CH3PR11MB8660.namprd11.prod.outlook.com (2603:10b6:610:1ce::13) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR11MB8660:EE_|DS7PR11MB7739:EE_ X-MS-Office365-Filtering-Correlation-Id: 9fc3b1d5-7025-48ff-8606-08de75f35338 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016|7053199007; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?p4aYSshQdLwK00f6KUl9apID7BPK5MB29YWlq79Uz2N6nrZCTiESRoD7d6iB?= =?us-ascii?Q?BWe9WooeGyKhsoLj/BnGjz46k5N/+4GtVLGrtCvJJTeYQKJWQaXL1sYTFHZh?= =?us-ascii?Q?1lylOQoMJWnqtpjCf+o97slhN56s18GusQEtOlfkl53/eW8lGdkYRnR6SL8T?= =?us-ascii?Q?ydzNCWq7yPUb7f3gTCR1fLfyV2Nj516wdA1C3ZT3m/Pa6C5eGFhgho4qQVYK?= =?us-ascii?Q?42A98rYK9kGLRvMxO5O3DsF0coZpuljVFyVsgydEB2m3S9FA0cSHlRPbAvEQ?= =?us-ascii?Q?oa46+/ftQQaswElfq/WJVMgN1znhhUxN/uQtByaZDSIAOnB7kg10/xv/togP?= =?us-ascii?Q?mOKJl94Ufka7KEHB0Wnc9tZddeEtJivJwmCC+RttTs/7WzQ+ePBLXMqruNYW?= =?us-ascii?Q?MmaXETEsvp3n6ZWIrcSqlsNLttzAqa0gU6CdzZbNOtYvfcD63DDA+hrE4gqr?= =?us-ascii?Q?RQE3qtDoOXw+4M6RjRlZuCyzWncv7Ca2P4yLowE1UCcd/d4WS+kvvBPUAvMC?= =?us-ascii?Q?viaUAvgONn/0hyX2chG2p9elKd6Ao8KpT7P/eLEIGisK+0oMxox+5RgK+aeJ?= =?us-ascii?Q?avuueOuM6cOvac/Xm+xc3dsqs1q7XKiTbLg3uHOwQcD38+3ttbvQREcmKjQO?= =?us-ascii?Q?BjIhZ6yT7HR/fX7O5ydbfA4xBnv4KL94R3AtbykJjIodPf1BE/66Gy2poaE7?= =?us-ascii?Q?KgyjAoyJa+rTWxe2/R0gWo+ZZtRnmsgl69UM3oBIh5JEHbqiKkx8xeAykXN9?= =?us-ascii?Q?0o+gxxyWe1prnttcjrK2AcVKL7owXrp8Apq71VdY8230X5JOadNzGbG2L1wD?= =?us-ascii?Q?fLejwtpmXsxzYU2PSlhuUtxpOoz5fueZbGYhxUgv6bPJlEmYcJPMSOILLKSf?= =?us-ascii?Q?1B9o4SgcMmxgGcUkDM+dFB8d8hw6r1pkMg/0tOWwmSkJINBEPTjEgBqhw+rQ?= =?us-ascii?Q?F8TyOTO8sXAFfVleP51eu2xUQr/lVZzybBsriMO5gWDDPnjEjfn+j2+UMoS1?= =?us-ascii?Q?vbgHtXNi7Vg9wW+0/+waHOoo3pBVs/P3KNSGRKPLrKand9SoL/CwY98B/qh3?= =?us-ascii?Q?ecWaOxESNCU7SOpAJJyD3dAXtOkaizeAorYXeiTxZjIbP7YqDyCsZH3ZfuBu?= =?us-ascii?Q?XrLVCcytmZ+EYSu/mbTlGUIQngju5r3yAYldV0sL645EOYEFpRNeZT7xGb6S?= =?us-ascii?Q?MyQoYKc3k2Nnd10LxvUS4yMqczFnzgwm5KjFbAQDk1anbjkk/E3Ld7tHiSoH?= =?us-ascii?Q?igIvfG55TcUEJm03/FaWOrY/lZePKkWCJEnGIg0fle50Dnmy1U05xGaIv3wd?= =?us-ascii?Q?kAM0kS/TtH03b1Q7zIv0Kwzyy4Z52rm7/UVTG8CnQlM60q8fcuY0uv+f4koU?= =?us-ascii?Q?Hrhbp+p7x03jV/fWDE83trgTeq49gLKtW79tuv7IX73kifEFSGiJBfmO9D5M?= =?us-ascii?Q?kcZuquxtg+RYpRVuUXsTGV13CdImdX7qfY/8EdJKYUHwn+ur5TolbGjQpG1+?= =?us-ascii?Q?EkK80GoiwFMnTz9hKVbsXCAcDOyhEYkvk1aWRvqJzOhSFeOs0Lx7gn+Qs7MR?= =?us-ascii?Q?qZsdO/y0xVb7tQeCgYRL/QyOMUtYCnz83iXUsmrwkpPkS3wFmvbnqFFWWhNg?= =?us-ascii?Q?pHcPjWK03mzDaDo5yQp2c1xJEiy4ZCAythNYTWzIly1ckPcuj6N+39PdXIzd?= =?us-ascii?Q?C7ibBM9b5nic5mMWVAHDgV7/xzgkc0f1nE7eOK9huSq+uoumeUGYZnWPsszW?= =?us-ascii?Q?LNEZ06uzwA=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 9fc3b1d5-7025-48ff-8606-08de75f35338 X-MS-Exchange-CrossTenant-AuthSource: CH3PR11MB8660.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2026 11:28:26.8015 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 3eiCkgI1ydJoe4BjTxA4OqBQnyrohiWqx8dS3ywQ6DHX5Eu3K4+U3k4RXstgSuhwoQ31Jxl+33BZoOGuJF14Aw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR11MB7739 X-OriginatorOrg: intel.com On Fri, Feb 13, 2026 at 05:26:57PM -0800, Sean Christopherson wrote: >Now that VMXON can be done without bouncing through KVM, do TDX-Module >initialization during subsys init (specifically before module_init() so >that it runs before KVM when both are built-in). Aside from the obvious >benefits of separating core TDX code from KVM, this will allow tagging a >pile of TDX functions and globals as being __init and __ro_after_init. > >Reviewed-by: Dan Williams >Signed-off-by: Sean Christopherson Reviewed-by: Chao Gao