From patchwork Tue May 18 06:35:15 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Huang, Ying" X-Patchwork-Id: 100358 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4I6dWir023052 for ; Tue, 18 May 2010 06:39:32 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756081Ab0ERGiT (ORCPT ); Tue, 18 May 2010 02:38:19 -0400 Received: from mga02.intel.com ([134.134.136.20]:20428 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755740Ab0ERGfk (ORCPT ); Tue, 18 May 2010 02:35:40 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 17 May 2010 23:32:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.53,253,1272870000"; d="scan'208";a="622545392" Received: from yhuang-dev.sh.intel.com ([10.239.13.66]) by orsmga001.jf.intel.com with ESMTP; 17 May 2010 23:35:19 -0700 From: Huang Ying To: lenb@kernel.org Cc: linux-kernel@vger.kernel.org, ying.huang@intel.com, andi@firstfloor.org, linux-acpi@vger.kernel.org, Andi Kleen Subject: [PATCH -v5 05/14] ACPI, APEI, Document for APEI Date: Tue, 18 May 2010 14:35:15 +0800 Message-Id: <1274164524-6092-6-git-send-email-ying.huang@intel.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1274164524-6092-1-git-send-email-ying.huang@intel.com> References: <1274164524-6092-1-git-send-email-ying.huang@intel.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Tue, 18 May 2010 06:39:32 +0000 (UTC) --- /dev/null +++ b/Documentation/acpi/apei/einj.txt @@ -0,0 +1,49 @@ + APEI Error INJection + ~~~~~~~~~~~~~~~~~~~~ + +EINJ provides a hardware error injection mechanism, it is very useful +for debugging and testing of other APEI and RAS features. + +To use EINJ, make the following is enabled in your kernel +configuration: + +CONFIG_DEBUG_FS +CONFIG_ACPI_APEI +CONFIG_ACPI_APEI_EINJ + +The user interface of EINJ is in debug file system, under the +directory apei/einj. The following files are provided. + +- available_error_type + Read this file will return the error injection capability of the + platform, that is, which error types are supported. The error type + definition is as follow, the left field is the error type value, the + right field is error description. + + 0x00000001 Processor Correctable + 0x00000002 Processor Uncorrectable non-fatal + 0x00000004 Processor Uncorrectable fatal + 0x00000008 Memory Correctable + 0x00000010 Memory Uncorrectable non-fatal + 0x00000020 Memory Uncorrectable fatal + 0x00000040 PCI Express Correctable + 0x00000080 PCI Express Uncorrectable fatal + 0x00000100 PCI Express Uncorrectable non-fatal + 0x00000200 Platform Correctable + 0x00000400 Platform Uncorrectable non-fatal + 0x00000800 Platform Uncorrectable fatal + + The format of file contents are as above, except there are only the + available error type lines. + +- error_type + This file is used to set the error type value. The error type value + is defined in "available_error_type" description. + +- error_inject + Write any integer to this file to trigger the error + injection. Before this, please specify all necessary error + parameters. + +For more information about EINJ, please refer to ACPI specification +version 4.0, section 17.5. --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -843,6 +843,11 @@ and is between 256 and 4096 characters. hd= [EIDE] (E)IDE hard drive subsystem geometry Format: ,, + hest_disable [ACPI] + Disable Hardware Error Source Table (HEST) support, + corresponding firmware-first mode error processing + logic will be disabled. + highmem=nn[KMG] [KNL,BOOT] forces the highmem zone to have an exact size of . This works even on boxes that have no highmem otherwise. This also works to reduce highmem