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Thu, 15 Jan 2026 15:37:59 +0000 Message-ID: Date: Thu, 15 Jan 2026 07:37:58 -0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] fs/resctrl: Add missing kconfig entry for CONFIG_RESCTRL_ASSIGN_FIXED To: Ben Horgan , CC: , , , , References: <20260113144952.47706-1-ben.horgan@arm.com> <4ebf839a-1d29-43ad-a90c-32f5bce999fd@intel.com> Content-Language: en-US From: Reinette Chatre In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BY5PR04CA0024.namprd04.prod.outlook.com (2603:10b6:a03:1d0::34) To SJ2PR11MB7573.namprd11.prod.outlook.com (2603:10b6:a03:4d2::10) 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: SJ2PR11MB7573:EE_|IA0PR11MB8335:EE_ X-MS-Office365-Filtering-Correlation-Id: 69c20ceb-b4e6-4640-8c34-08de544c101b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; 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Add this. >>> >>> Also, take the opportunity ensure that any user attempt to change the >>> assign mode fails from the resctrl code rather than delegating to the arch >>> specific code and let the user know by adding a message in last_cmd_status. >> >> Why *any* attempt? Avoiding delegating to arch seems ok as a goal but this change >> additionally changes interface with user space. Current behavior when user writes >> existing mode to the file is to just return success. For example, if current mode >> is "default" and user writes "default". This patch changes this behavior to fail >> instead. Is this intended? > > Intended but as you point out, it would be best to accept the current > value without error for maximum compatibility between architectures. > I'll update the config option help text to reflect this. Was the help > text also discussed previously? It is not clear to me which help text you are referring to. Could you please point me to it? Reinette