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Sat, 24 Jan 2026 00:44:29 +0000 From: Date: Fri, 23 Jan 2026 16:44:28 -0800 To: Shubhakar Gowda , CC: , , , , , , , , Shubhakar Gowda Message-ID: <697415ec95e13_3095100cb@dwillia2-mobl4.notmuch> In-Reply-To: <20260119184438.19942-1-Shubhakar_gowda.P_s@dell.com> References: <20260119184438.19942-1-Shubhakar_gowda.P_s@dell.com> Subject: Re: [PATCH] ACPI: NFIT:Advertise DSM function 0xA (Query ARS error inject capabilities) Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ0PR13CA0008.namprd13.prod.outlook.com (2603:10b6:a03:2c0::13) To PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB8107:EE_|SJ2PR11MB8297:EE_ X-MS-Office365-Filtering-Correlation-Id: 272cb2aa-3672-4dda-a349-08de5ae1bbc4 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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This patch adds support for this > DSM function in the NFIT DSM mask so that userspace and ndctl tool can > detect platform support for Query ARS error injection capabilities features. > > The patch updates NFIT initialization to include DSM 0xA, logs > supported DSMs for debugging, and uses the existing DSM infrastructure. > No kernel ABI changes are introduced. It does introduce new ABI. This new command can now be passed from userspace. Can you say a bit more about why this is needed and the plans for userspace to consume this? Like proposed changes to the "ndctl inject-error" command, and otherwise what problems occur today with the kernel blocking this command code?