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Thu, 22 Jan 2026 06:09:36 +0000 From: Date: Wed, 21 Jan 2026 22:09:34 -0800 To: , Gregory Price , CC: Yazen Ghannam , Robert Richter , Peter Zijlstra , Dave Jiang , "Ard Biesheuvel" , Jonathan Cameron , Alison Schofield , Vishal Verma , Ira Weiny , Davidlohr Bueso , , , "Fabio M. 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Wysocki" , John Allen Message-ID: <6971bf1ea0ebf_3095100fe@dwillia2-mobl4.notmuch> In-Reply-To: <697186008aa26_1d6f10061@dwillia2-mobl4.notmuch> References: <20260114180859.00004623@huawei.com> <20260115080444.GD830755@noisy.programming.kicks-ass.net> <20260116143838.GC1890602@noisy.programming.kicks-ass.net> <20260119160342.GA659351@yaz-khff2.amd.com> <69701f6de978_1d6f1001e@dwillia2-mobl4.notmuch> <20260121145817.GB1784626@yaz-khff2.amd.com> <69714e9728d2d_1d6f10075@dwillia2-mobl4.notmuch> <697186008aa26_1d6f10061@dwillia2-mobl4.notmuch> Subject: Re: [PATCH v9 10/13] cxl: Enable AMD Zen5 address translation using ACPI PRMT Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BY3PR04CA0010.namprd04.prod.outlook.com (2603:10b6:a03:217::15) To PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) 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: PH8PR11MB8107:EE_|SJ1PR11MB6083:EE_ X-MS-Office365-Filtering-Correlation-Id: 67c44cc9-fa3e-4b43-a6a3-08de597cd1ba X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|1800799024; 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To be clear I am still of the opinion that even if it is confirmed that Gregory's algorithm would have done the trick with a new table, proceed with the PRM solution. The PRM method appears to be already shipping and it fixes a long overdue problem causing end user pain. The request is do not plan to ship new PRM without clarity on why a native driver approach can not work.