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| author | Ingo Molnar <mingo@kernel.org> | 2013-12-18 10:49:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-12-18 10:49:02 +0100 |
| commit | cc131eef1cec905b9bdb0be6d7ab3af86f23de98 (patch) | |
| tree | 62610172a470b8b6ca6f82845506012fae1c827c /Documentation | |
| parent | 014952270eb9770a41084e74c721e4c07f2306c5 (diff) | |
| parent | 3482fb5e0c1c20ce0dbcfc5ca3b6558a8c455b10 (diff) | |
| download | linux-stable-cc131eef1cec905b9bdb0be6d7ab3af86f23de98.tar.gz linux-stable-cc131eef1cec905b9bdb0be6d7ab3af86f23de98.tar.bz2 linux-stable-cc131eef1cec905b9bdb0be6d7ab3af86f23de98.zip | |
Merge tag 'please-pull-einj' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras into x86/ras
Pull error injection update from Tony Luck:
* Add more flexibility to the error injection (EINJ) debugfs interface
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/acpi/apei/einj.txt | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt index a58b63da1a36..f51861bcb07b 100644 --- a/Documentation/acpi/apei/einj.txt +++ b/Documentation/acpi/apei/einj.txt @@ -45,11 +45,22 @@ directory apei/einj. The following files are provided. injection. Before this, please specify all necessary error parameters. +- flags + Present for kernel version 3.13 and above. Used to specify which + of param{1..4} are valid and should be used by BIOS during injection. + Value is a bitmask as specified in ACPI5.0 spec for the + SET_ERROR_TYPE_WITH_ADDRESS data structure: + Bit 0 - Processor APIC field valid (see param3 below) + Bit 1 - Memory address and mask valid (param1 and param2) + Bit 2 - PCIe (seg,bus,dev,fn) valid (param4 below) + If set to zero, legacy behaviour is used where the type of injection + specifies just one bit set, and param1 is multiplexed. + - param1 This file is used to set the first error parameter value. Effect of parameter depends on error_type specified. For example, if error type is memory related type, the param1 should be a valid physical - memory address. + memory address. [Unless "flag" is set - see above] - param2 This file is used to set the second error parameter value. Effect of @@ -58,6 +69,12 @@ directory apei/einj. The following files are provided. address mask. Linux requires page or narrower granularity, say, 0xfffffffffffff000. +- param3 + Used when the 0x1 bit is set in "flag" to specify the APIC id + +- param4 + Used when the 0x4 bit is set in "flag" to specify target PCIe device + - notrigger The EINJ mechanism is a two step process. First inject the error, then perform some actions to trigger it. Setting "notrigger" to 1 skips the |