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Mon, 12 Jun 2023 16:51:46 -0500 From: Avadhut Naik To: , , , , CC: , , , Subject: [RFC PATCH v3 0/3] Add support for Vendor Defined Error Types in Einj Module Date: Mon, 12 Jun 2023 21:51:36 +0000 Message-ID: <20230612215139.5132-1-Avadhut.Naik@amd.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044F6:EE_|DS7PR12MB5959:EE_ X-MS-Office365-Filtering-Correlation-Id: f47698ef-fcf2-404e-614c-08db6b8f387b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(136003)(346002)(376002)(396003)(39860400002)(451199021)(40470700004)(36840700001)(46966006)(86362001)(82310400005)(7696005)(40460700003)(316002)(8676002)(41300700001)(82740400003)(83380400001)(5660300002)(26005)(81166007)(40480700001)(1076003)(356005)(6666004)(36860700001)(8936002)(36756003)(336012)(4326008)(426003)(70586007)(70206006)(47076005)(478600001)(186003)(16526019)(54906003)(2906002)(2616005)(110136005)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jun 2023 21:51:47.3756 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f47698ef-fcf2-404e-614c-08db6b8f387b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000044F6.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB5959 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768535692185105655?= X-GMAIL-MSGID: =?utf-8?q?1768535692185105655?= This patchset adds support for Vendor Defined Error types in the einj module by exporting a binary blob file in module's debugfs directory. Userspace tools can write OEM Defined Structures into the blob file as part of injecting Vendor defined errors. The first patch refactors available_error_type_show() function to ensure all errors supported by the platform are output through einj module's available_error_type file in debugfs. The second patch adds a write callback for binary blobs created through debugfs_create_blob() API. The third adds the required support i.e. establishing the memory mapping and exporting it through debugfs blob file for Vendor-defined Error types. Changes in v2: - Split the v1 patch, as was recommended, to have a separate patch for changes in debugfs. - Refactored available_error_type_show() function into a separate patch. - Changed file permissions to octal format to remove checkpatch warnings. Changes in v3: - Use BIT macro for generating error masks instead of hex values since ACPI spec uses bit numbers. - Handle the corner case of acpi_os_map_iomem() returning NULL through a local variable to a store the size of OEM defined data structure. Avadhut Naik (3): ACPI: APEI: EINJ: Refactor available_error_type_show() fs: debugfs: Add write functionality to debugfs blobs ACPI: APEI: EINJ: Add support for vendor defined error types drivers/acpi/apei/einj.c | 67 +++++++++++++++++++++++++++------------- fs/debugfs/file.c | 28 ++++++++++++++--- 2 files changed, 69 insertions(+), 26 deletions(-)