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Fri, 8 Aug 2025 01:47:22 +0000 Message-ID: <53387aa7-0e72-4bf9-a188-43c0f78c2d6f@intel.com> Date: Thu, 7 Aug 2025 18:47:18 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 04/10] x86,fs/resctrl: Implement "io_alloc" enable/disable handlers To: Babu Moger , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , References: <40ffabb62f9f36aae6a8dc26e5f2e376a3dee23a.1754436586.git.babu.moger@amd.com> From: Reinette Chatre Content-Language: en-US In-Reply-To: <40ffabb62f9f36aae6a8dc26e5f2e376a3dee23a.1754436586.git.babu.moger@amd.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0261.namprd04.prod.outlook.com (2603:10b6:303:88::26) To SJ2PR11MB7573.namprd11.prod.outlook.com (2603:10b6:a03:4d2::10) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR11MB7573:EE_|MW6PR11MB8390:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ae126b2-017d-4bb0-c57a-08ddd61d8481 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|13003099007|7053199007; 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Change SDCIAE state by setting > (to enable) or clearing (to disable) bit 1 of MSR L3_QOS_EXT_CFG on all > logical processors within the cache domain. > > Introduce architecture-specific call to enable and disable the feature. > > The SDCIAE feature details are available in APM listed below [1]. > [1] AMD64 Architecture Programmer's Manual Volume 2: System Programming > Publication # 24593 Revision 3.41 section 19.4.7 L3 Smart Data Cache > Injection Allocation Enforcement (SDCIAE) > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 fyi ... Documentation/process/maintainer-tip.rst has some examples how the "Link:" can be associated with the changelog. For example, above could be: The SDCIAE feature details are available in APM [1] available from [2]. [1] ... Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 # [2] > Signed-off-by: Babu Moger > --- Reviewed-by: Reinette Chatre Reinette