diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/acpi/apei/einj.txt | 59 | ||||
| -rw-r--r-- | Documentation/kernel-parameters.txt | 9 |
2 files changed, 68 insertions, 0 deletions
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt new file mode 100644 index 000000000000..dfab71848dc8 --- /dev/null +++ b/Documentation/acpi/apei/einj.txt | |||
| @@ -0,0 +1,59 @@ | |||
| 1 | APEI Error INJection | ||
| 2 | ~~~~~~~~~~~~~~~~~~~~ | ||
| 3 | |||
| 4 | EINJ provides a hardware error injection mechanism | ||
| 5 | It is very useful for debugging and testing of other APEI and RAS features. | ||
| 6 | |||
| 7 | To use EINJ, make sure the following are enabled in your kernel | ||
| 8 | configuration: | ||
| 9 | |||
| 10 | CONFIG_DEBUG_FS | ||
| 11 | CONFIG_ACPI_APEI | ||
| 12 | CONFIG_ACPI_APEI_EINJ | ||
| 13 | |||
| 14 | The user interface of EINJ is debug file system, under the | ||
| 15 | directory apei/einj. The following files are provided. | ||
| 16 | |||
| 17 | - available_error_type | ||
| 18 | Reading this file returns the error injection capability of the | ||
| 19 | platform, that is, which error types are supported. The error type | ||
| 20 | definition is as follow, the left field is the error type value, the | ||
| 21 | right field is error description. | ||
| 22 | |||
| 23 | 0x00000001 Processor Correctable | ||
| 24 | 0x00000002 Processor Uncorrectable non-fatal | ||
| 25 | 0x00000004 Processor Uncorrectable fatal | ||
| 26 | 0x00000008 Memory Correctable | ||
| 27 | 0x00000010 Memory Uncorrectable non-fatal | ||
| 28 | 0x00000020 Memory Uncorrectable fatal | ||
| 29 | 0x00000040 PCI Express Correctable | ||
| 30 | 0x00000080 PCI Express Uncorrectable fatal | ||
| 31 | 0x00000100 PCI Express Uncorrectable non-fatal | ||
| 32 | 0x00000200 Platform Correctable | ||
| 33 | 0x00000400 Platform Uncorrectable non-fatal | ||
| 34 | 0x00000800 Platform Uncorrectable fatal | ||
| 35 | |||
| 36 | The format of file contents are as above, except there are only the | ||
| 37 | available error type lines. | ||
| 38 | |||
| 39 | - error_type | ||
| 40 | This file is used to set the error type value. The error type value | ||
| 41 | is defined in "available_error_type" description. | ||
| 42 | |||
| 43 | - error_inject | ||
| 44 | Write any integer to this file to trigger the error | ||
| 45 | injection. Before this, please specify all necessary error | ||
| 46 | parameters. | ||
| 47 | |||
| 48 | - param1 | ||
| 49 | This file is used to set the first error parameter value. Effect of | ||
| 50 | parameter depends on error_type specified. For memory error, this is | ||
| 51 | physical memory address. | ||
| 52 | |||
| 53 | - param2 | ||
| 54 | This file is used to set the second error parameter value. Effect of | ||
| 55 | parameter depends on error_type specified. For memory error, this is | ||
| 56 | physical memory address mask. | ||
| 57 | |||
| 58 | For more information about EINJ, please refer to ACPI specification | ||
| 59 | version 4.0, section 17.5. | ||
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 839b21b0699a..42d77735fd45 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt | |||
| @@ -750,6 +750,10 @@ and is between 256 and 4096 characters. It is defined in the file | |||
| 750 | Default value is 0. | 750 | Default value is 0. |
| 751 | Value can be changed at runtime via /selinux/enforce. | 751 | Value can be changed at runtime via /selinux/enforce. |
| 752 | 752 | ||
| 753 | erst_disable [ACPI] | ||
| 754 | Disable Error Record Serialization Table (ERST) | ||
| 755 | support. | ||
| 756 | |||
| 753 | ether= [HW,NET] Ethernet cards parameters | 757 | ether= [HW,NET] Ethernet cards parameters |
| 754 | This option is obsoleted by the "netdev=" option, which | 758 | This option is obsoleted by the "netdev=" option, which |
| 755 | has equivalent usage. See its documentation for details. | 759 | has equivalent usage. See its documentation for details. |
| @@ -843,6 +847,11 @@ and is between 256 and 4096 characters. It is defined in the file | |||
| 843 | hd= [EIDE] (E)IDE hard drive subsystem geometry | 847 | hd= [EIDE] (E)IDE hard drive subsystem geometry |
| 844 | Format: <cyl>,<head>,<sect> | 848 | Format: <cyl>,<head>,<sect> |
| 845 | 849 | ||
| 850 | hest_disable [ACPI] | ||
| 851 | Disable Hardware Error Source Table (HEST) support; | ||
| 852 | corresponding firmware-first mode error processing | ||
| 853 | logic will be disabled. | ||
| 854 | |||
| 846 | highmem=nn[KMG] [KNL,BOOT] forces the highmem zone to have an exact | 855 | highmem=nn[KMG] [KNL,BOOT] forces the highmem zone to have an exact |
| 847 | size of <nn>. This works even on boxes that have no | 856 | size of <nn>. This works even on boxes that have no |
| 848 | highmem otherwise. This also works to reduce highmem | 857 | highmem otherwise. This also works to reduce highmem |