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Tue, 20 Jan 2026 08:07:35 +0000 Date: Tue, 20 Jan 2026 16:07:25 +0800 From: Chao Gao To: Xin Li CC: , , , , , , , , , , , , , , , , Subject: Re: [PATCH v9 17/22] KVM: x86: Advertise support for FRED Message-ID: References: <20251026201911.505204-1-xin@zytor.com> <20251026201911.505204-18-xin@zytor.com> <71F2B269-4D29-4B23-9111-E43CDD09CF13@zytor.com> Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <71F2B269-4D29-4B23-9111-E43CDD09CF13@zytor.com> X-ClientProxiedBy: TPYP295CA0029.TWNP295.PROD.OUTLOOK.COM (2603:1096:7d0:a::6) 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_|CH3PR11MB8563:EE_ X-MS-Office365-Filtering-Correlation-Id: ac24b5c4-a47b-44f2-66ce-08de57faf860 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|1800799024|7416014|376014|366016; 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In this case, we need to clear FRED for AMD. The concern is that before AMD's FRED KVM support is implemented, FRED will be exposed to userspace on AMD FRED-capable hardware. This may cause issues.