From patchwork Mon Feb 26 22:27:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Cheatham X-Patchwork-Id: 776303 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on2069.outbound.protection.outlook.com [40.107.237.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D267D131E23; Mon, 26 Feb 2024 22:28:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.237.69 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708986506; cv=fail; b=QaA88hqa03jiDsb4eVbQ2ipmwjcIug174RNRMKPafueDyMlnIs8V6BA4JiUl8h9Br1v5XVpVcdbjgW4kDy6mBxMfWR/S3CJoGjV755DotCgmp65Fsl3vQx+hhtWr49e8sB7nnO/FAiTFJDKvsLVIBbZgsXfnw4b6Un5dTIldK7k= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708986506; c=relaxed/simple; bh=s3xALJvAIsNNWPniotW4fplEx5TTsSSVSTXwvrr/e7E=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=fG4SVX07SVe5etJfyV5GgT0ZoG68qgQtXWXiShrEFnEif3/7S/xRKNbiFHBe2B86T80yBQuxTZfuxj/cjXWRflCiES+MSfU49DgekI/W/w4net3fV3baOieOeC7RQA+KjEDH9LKTTg2YVMppzqqQ1Bd5DM+gKBPUL+Ct0ybOe2U= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=cu3lNsiI; arc=fail smtp.client-ip=40.107.237.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="cu3lNsiI" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ITEmBMBMaIYW59hp5itZc2Q1tRkCRHZFxv7TjYQXL8DmKyI7aIZGjFaWpnqG4nEj6QinAZ0I3s/PuwkL50Kl+1OasBjljseVLcLZF0QSYtmEGcJRZzhLMkKdnqhuw58FPl4m90+FaLluqPml0epb9OxT6VPJ8wvQ74aAuoxatFWbCxGZTsysrcMTPrUGgzjRexR0jzmdLM+6y4Ye8Wx0+wzg7N4C4MZFKjX5Gv/GBBee5vjs01lnf7q9HFJRw5WW5b/iS+J3HWQYiolwOjpLd3+eChv6Li9LwWRuIn5JdkR8s4Zoq0pislDl8W2FjzY4Eb3W/+y9gPfYRtG00DRR0Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=I9gip4Z8xkai3SeEkYmh5ADlDrXv0++QsVpTTfmRjmI=; b=A27CC9mZBQ1Tewu6jzelvk7Rt+ayVhC9SkspRnzOztC7xA1J9LZqcolcN5gfWDoyTgOw8Z8aAXhMynMvDSWKguLNrW4rzsJv0ORBcxPQXWUc++s+8yNY2xEVvrxMwstwJyC4G608uuBa7xi0EKhgoxSS0dIpa32O8udlFAEcYnhiIi4xIzPfVozR03eZJw/pnySsmxGYMm3EWY+Hd3wSXgXPSNHLAhWyDksrmX5sEh7SmyZD+McBL2YoqbMeTlO6S4q8Ic0c6LSpvsYQyKbKhV9NGTrFmXK6Z9vHk/QjhVFYhIK7FcaeUzfTV7s/riMQzp68pYMjcSueMNVD70Ojqg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=intel.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=I9gip4Z8xkai3SeEkYmh5ADlDrXv0++QsVpTTfmRjmI=; b=cu3lNsiIraDilt4o8LtqT/rSDb4nih5TV2fLLCIxOsC6H/8bR6x6GUv7vgVAVMGB492BJpjZuo4Rjp4aMukKbBoDVhoWWmI1/xi8+bAS2wwlx9yIoE9Mv9tWxwEW76f5Qxs7fHq1krGWxgULa59+c+/S4dnx2+dhhisOjXq4864= Received: from CH2PR11CA0011.namprd11.prod.outlook.com (2603:10b6:610:54::21) by IA1PR12MB6138.namprd12.prod.outlook.com (2603:10b6:208:3ea::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7316.23; Mon, 26 Feb 2024 22:28:21 +0000 Received: from DS3PEPF000099DA.namprd04.prod.outlook.com (2603:10b6:610:54:cafe::2a) by CH2PR11CA0011.outlook.office365.com (2603:10b6:610:54::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.49 via Frontend Transport; Mon, 26 Feb 2024 22:28:21 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DS3PEPF000099DA.mail.protection.outlook.com (10.167.17.11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7292.25 via Frontend Transport; Mon, 26 Feb 2024 22:28:21 +0000 Received: from bcheatha-HP-EliteBook-845-G8-Notebook-PC.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Mon, 26 Feb 2024 16:28:17 -0600 From: Ben Cheatham To: , , , , , CC: , , , , , , , Subject: [PATCH v14 4/4] EINJ, Documentation: Update EINJ kernel doc Date: Mon, 26 Feb 2024 16:27:04 -0600 Message-ID: <20240226222704.1079449-5-Benjamin.Cheatham@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240226222704.1079449-1-Benjamin.Cheatham@amd.com> References: <20240226222704.1079449-1-Benjamin.Cheatham@amd.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF000099DA:EE_|IA1PR12MB6138:EE_ X-MS-Office365-Filtering-Correlation-Id: dedd1391-6ad3-49aa-224d-08dc371a3d20 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:(13230031)(36860700004)(82310400014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Feb 2024 22:28:21.3180 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dedd1391-6ad3-49aa-224d-08dc371a3d20 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: DS3PEPF000099DA.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6138 Update EINJ kernel document to include how to inject CXL protocol error types, build the kernel to include CXL error types, and give an example injection. Signed-off-by: Ben Cheatham Reviewed-by: Jonathan Cameron --- .../firmware-guide/acpi/apei/einj.rst | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/Documentation/firmware-guide/acpi/apei/einj.rst b/Documentation/firmware-guide/acpi/apei/einj.rst index d6b61d22f525..c52b9da08fa9 100644 --- a/Documentation/firmware-guide/acpi/apei/einj.rst +++ b/Documentation/firmware-guide/acpi/apei/einj.rst @@ -32,6 +32,10 @@ configuration:: CONFIG_ACPI_APEI CONFIG_ACPI_APEI_EINJ +...and to (optionally) enable CXL protocol error injection set:: + + CONFIG_ACPI_APEI_EINJ_CXL + The EINJ user interface is in /apei/einj. The following files belong to it: @@ -118,6 +122,24 @@ The following files belong to it: this actually works depends on what operations the BIOS actually includes in the trigger phase. +CXL error types are supported from ACPI 6.5 onwards (given a CXL port +is present). The EINJ user interface for CXL error types is at +/cxl. The following files belong to it: + +- einj_types: + + Provides the same functionality as available_error_types above, but + for CXL error types + +- $dport_dev/einj_inject: + + Injects a CXL error type into the CXL port represented by $dport_dev, + where $dport_dev is the name of the CXL port (usually a PCIe device name). + Error injections targeting a CXL 2.0+ port can use the legacy interface + under /apei/einj, while CXL 1.1/1.0 port injections + must use this file. + + BIOS versions based on the ACPI 4.0 specification have limited options in controlling where the errors are injected. Your BIOS may support an extension (enabled with the param_extension=1 module parameter, or boot @@ -181,6 +203,18 @@ You should see something like this in dmesg:: [22715.834759] EDAC sbridge MC3: PROCESSOR 0:306e7 TIME 1422553404 SOCKET 0 APIC 0 [22716.616173] EDAC MC3: 1 CE memory read error on CPU_SrcID#0_Channel#0_DIMM#0 (channel:0 slot:0 page:0x12345 offset:0x0 grain:32 syndrome:0x0 - area:DRAM err_code:0001:0090 socket:0 channel_mask:1 rank:0) +A CXL error injection example with $dport_dev=0000:e0:01.1:: + + # cd /sys/kernel/debug/cxl/ + # ls + 0000:e0:01.1 0000:0c:00.0 + # cat einj_types # See which errors can be injected + 0x00008000 CXL.mem Protocol Correctable + 0x00010000 CXL.mem Protocol Uncorrectable non-fatal + 0x00020000 CXL.mem Protocol Uncorrectable fatal + # cd 0000:e0:01.1 # Navigate to dport to inject into + # echo 0x8000 > einj_inject # Inject error + Special notes for injection into SGX enclaves: There may be a separate BIOS setup option to enable SGX injection.