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Thu, 8 Oct 2026 16:12:06 +0000 Date: Thu, 8 Oct 2026 09:12:04 -0700 From: "Luck, Tony" To: Reinette Chatre CC: , , , , , , , , , , , , , , Subject: Re: [PATCH v2 0/5] x86,fs/resctrl: Cleanups in preparation for multiple controls support Message-ID: References: Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: SJ2PR07CA0020.namprd07.prod.outlook.com (2603:10b6:a03:505::19) To SJ1PR11MB6083.namprd11.prod.outlook.com (2603:10b6:a03:48a::9) 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: SJ1PR11MB6083:EE_|SA1PR11MB6783:EE_ X-MS-Office365-Filtering-Correlation-Id: 14536d51-dfdc-439e-7aa9-08df2556e58a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|23010399003|366016|1800799024|56012099006|11063799006|10067099003|22082099003|18002099003; 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I set r->membw.delay_linear = false; and booted to check. Console message during boot now includes: [ 7.372455] resctrl: Non-linear MBA delay values not supported Attempting to mount resctrl with the mba_MBps option fails (as expected) with: mount: /sys/fs/resctrl: fsconfig system call failed: resctrl: mba_MBps requires MBM (mbm_event mode not supported) and linear scale MBA at L3 scope. I've been using the older versions of these patches from git://git.kernel.org/pub/scm/linux/kernel/git/reinette/linux.git resctrl/controls_rfc_v2.4 and haven't seen any issues. Series: Reviewed-by: Tony Luck -Tony