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Thu, 31 Jul 2025 11:04:32 +0000 Date: Thu, 31 Jul 2025 19:04:22 +0800 From: Chao Gao To: "Xin Li (Intel)" CC: , , , , , , , , , Subject: Re: [PATCH v1 3/4] KVM: VMX: Handle the immediate form of MSR instructions Message-ID: References: <20250730174605.1614792-1-xin@zytor.com> <20250730174605.1614792-4-xin@zytor.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20250730174605.1614792-4-xin@zytor.com> X-ClientProxiedBy: SI2P153CA0020.APCP153.PROD.OUTLOOK.COM (2603:1096:4:190::19) To CH3PR11MB8660.namprd11.prod.outlook.com (2603:10b6:610:1ce::13) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR11MB8660:EE_|PH8PR11MB6562:EE_ X-MS-Office365-Filtering-Correlation-Id: a249d4c6-211e-499b-bc9b-08ddd0220705 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014|7416014; 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Therefore, KVM needs to reflect EXIT_REASON_MSR_READ/WRITE_IMM VM-exits to L1 guests in nested cases if KVM claims it supports the new form of MSR instructions. I'm also wondering if the emulator needs to support this new instruction. I suppose it does.