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bh=vcm3m9yaKvaeZGkdaLoyOkUUYCBzJ0uw2TFfwUzURNE=; b=B0sIfut5Irr9l46AXvhjkhNCd+XczSgZOTKdDnY4GibtKyT5MgSc2ORThVqjYxXH0CGlexBUVt3M01u0848ZdZZgnQA9FlSfcJuhWPgcb8DvS8v/cEwXQY4Xf7PZaNGRwo9/g/32G4NfcHilXhy5lAjVYnEGFVLXgBFrhfH6zBA= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=os.amperecomputing.com; Received: from SN7PR01MB7903.prod.exchangelabs.com (2603:10b6:806:34f::17) by DS7PR01MB9364.prod.exchangelabs.com (2603:10b6:8:24f::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8835.19; Thu, 12 Jun 2025 23:13:39 +0000 Received: from SN7PR01MB7903.prod.exchangelabs.com ([fe80::cf45:9855:a64e:382f]) by SN7PR01MB7903.prod.exchangelabs.com ([fe80::cf45:9855:a64e:382f%7]) with mapi id 15.20.8835.019; Thu, 12 Jun 2025 23:13:39 +0000 From: Zaid Alali <zaidal@os.amperecomputing.com> To: rafael@kernel.org, lenb@kernel.org, james.morse@arm.com, tony.luck@intel.com, bp@alien8.de, kees@kernel.org, gustavoars@kernel.org, zaidal@os.amperecomputing.com, Jonathan.Cameron@huawei.com, sudeep.holla@arm.com, jonathanh@nvidia.com, u.kleine-koenig@baylibre.com, dan.carpenter@linaro.org, viro@zeniv.linux.org.uk, ira.weiny@intel.com, alison.schofield@intel.com, dan.j.williams@intel.com, gregkh@linuxfoundation.org, peterz@infradead.org, dave.jiang@intel.com, Benjamin.Cheatham@amd.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH v9 0/7 RESEND] Enable EINJv2 Support Date: Thu, 12 Jun 2025 16:13:20 -0700 Message-ID: <20250612231327.84360-1-zaidal@os.amperecomputing.com> X-Mailer: git-send-email 2.43.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MW4P223CA0030.NAMP223.PROD.OUTLOOK.COM (2603:10b6:303:80::35) To SN7PR01MB7903.prod.exchangelabs.com (2603:10b6:806:34f::17) Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: <linux-acpi.vger.kernel.org> List-Subscribe: <mailto:linux-acpi+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-acpi+unsubscribe@vger.kernel.org> MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR01MB7903:EE_|DS7PR01MB9364:EE_ X-MS-Office365-Filtering-Correlation-Id: 0bee0a1a-8c0a-452c-1c4d-08ddaa06c405 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|52116014|1800799024|7416014|376014|366016|38350700014|921020; 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Enable EINJv2 Support
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The goal of this update is to allow the driver to simultaneously support EINJ and EINJv2. The implementation follows ACPI 6.6 specs[1] that enables the driver to discover system capabilities through GET_ERROR_TYPE. Link: https://uefi.org/specs/ACPI/6.6/18_Platform_Error_Interfaces.html#error-injection [1] V5: *Users no longer input component array size, instead it is counted by parsing the component array itself. V6: *Fix memory leak. *If EINJv2 initialization failed, EINJv1 will still work, and probe function will continue with disabled EINJv2. V7: *Update component array to take 128-bit values to match ACPI specs. *Enable Vendor EINJv2 injections *Moved component array parsing and validating to a separate function to improve readability. V8: *Update UI to use single value files for component array. *Update links to point to recent ACPI 6.6 spec release. *Updated commit messages and documentation patch. *Dropped the first two patches as they were merged via ACPICA project. V9: *Fix commit messages signed-off/reviewed-by order. *Fix sparse warning by defining syndrom_data as a static struct. Tony Luck (1): ACPI: APEI: EINJ: Create debugfs files to enter device id and syndrome Zaid Alali (6): ACPI: APEI: EINJ: Fix kernel test sparse warnings ACPI: APEI: EINJ: Enable the discovery of EINJv2 capabilities ACPI: APEI: EINJ: Add einjv2 extension struct ACPI: APEI: EINJ: Discover EINJv2 parameters ACPI: APEI: EINJ: Enable EINJv2 error injections ACPI: APEI: EINJ: Update the documentation for EINJv2 support .../firmware-guide/acpi/apei/einj.rst | 33 ++ drivers/acpi/apei/apei-internal.h | 2 +- drivers/acpi/apei/einj-core.c | 372 ++++++++++++++---- drivers/acpi/apei/einj-cxl.c | 2 +- 4 files changed, 340 insertions(+), 69 deletions(-)