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Mon, 22 Jun 2026 07:58:42 +0000 Date: Mon, 22 Jun 2026 15:18:11 +0800 From: Yan Zhao To: Fuad Tabba CC: , , , , , , , , , , , , , , , , , , , , , , , , Paolo Bonzini , "Sean Christopherson" , Thomas Gleixner , "Ingo Molnar" , Borislav Petkov , Dave Hansen , , "H. Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , Shuah Khan , Vishal Annapurve , Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Baoquan He , Jason Gunthorpe , Vlastimil Babka , , , , , , , Subject: Re: [PATCH v8 23/46] KVM: TDX: Make source page optional for KVM_TDX_INIT_MEM_REGION Message-ID: Reply-To: Yan Zhao References: <20260618-gmem-inplace-conversion-v8-0-9d2959357853@google.com> <20260618-gmem-inplace-conversion-v8-23-9d2959357853@google.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: TP0P295CA0031.TWNP295.PROD.OUTLOOK.COM (2603:1096:910:4::12) To PH0PR11MB7472.namprd11.prod.outlook.com (2603:10b6:510:28c::12) Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB7472:EE_|MW4PR11MB6839:EE_ X-MS-Office365-Filtering-Correlation-Id: ffcd5c92-c136-479f-04bd-08ded034142e X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|7416014|23010399003|1800799024|11063799006|56012099006|4143699003|18002099003|22082099003; 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This is allowed :) See below description in the spec [1]. In-Place Add: It is allowed to set the TD page HPA in R8 to the same address as the source page HPA in R9. In this case the source page is converted to be a TD private page. [1] https://www.intel.com/content/www/us/en/content-details/853294/intel-trust-domain-extensions-intel-tdx-module-base-architecture-specification.html