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Tue, 8 Sep 2026 16:18:58 +0000 Message-ID: Date: Tue, 8 Sep 2026 09:18:56 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/5] x86,fs/resctrl: Remove "arch_needs_linear" To: "Chen, Yu C" CC: , , , , , , , , , , , , , , , References: <62904217290f2cd3225d8608c19e284d6dde3aec.1788452481.git.reinette.chatre@intel.com> <35759986-3bd3-4ada-b2ce-434090cdc1cb@intel.com> <425a1c9f-7051-4baf-a884-65524e8f4fe4@intel.com> From: Reinette Chatre Content-Language: en-US In-Reply-To: <425a1c9f-7051-4baf-a884-65524e8f4fe4@intel.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ClientProxiedBy: MW4PR03CA0073.namprd03.prod.outlook.com (2603:10b6:303:b6::18) To SJ2PR11MB8370.namprd11.prod.outlook.com (2603:10b6:a03:540::20) 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: SJ2PR11MB8370:EE_|SA0PR11MB4733:EE_ X-MS-Office365-Filtering-Correlation-Id: 6a47a6de-002a-41c3-0df8-08df0dc4e32d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|23010399003|376014|1800799024|7416014|10067099003|6133799003|22082099003|18002099003|11063799006|56012099006|4143699003; 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>>> >>> In the previous patch, a "Non Linear delay-bw map" warning is triggered >>> during the actual write operation. Similarly, displaying such a message >>> during bootup in this patch might also be helpful. >> ok ... but who will the message be helpful to? This is a check of >> hardware state, not x86 resctrl driver state as in the previous patch. >> > > This can be used by the admin (not the driver) to query why MBA is not > enabled by checking the boot message, IMO. Right, but this message will only appear on hardware that does not exist, no? Reinette