diff options
| author | Huang Ying <ying.huang@intel.com> | 2011-07-13 09:14:20 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2011-07-14 07:38:20 +0400 |
| commit | eccddd32ced0df8f9130024157bf8d37df860d76 (patch) | |
| tree | 6e4372e5096fde4d2ffea12a0b992bef06ad589f /Documentation/security | |
| parent | b6a9501658530d8b8374e37f1edb549039a8a260 (diff) | |
| download | linux-eccddd32ced0df8f9130024157bf8d37df860d76.tar.xz | |
ACPI, APEI, Add APEI bit support in generic _OSC call
In APEI firmware first mode, hardware error is reported by hardware to
firmware firstly, then firmware reports the error to Linux in a GHES
error record via POLL/SCI/IRQ/NMI etc.
This may result in some issues if OS has no full APEI support. So
some firmware implementation will work in a back-compatible mode by
default. Where firmware will only notify OS in old-fashion, without
GHES record. For example, for a fatal hardware error, only NMI is
signaled, no GHES record.
To gain full APEI power on these machines, APEI bit in generic _OSC
call can be specified to tell firmware that Linux has full APEI
support. This patch adds the APEI bit support in generic _OSC call.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/security')
0 files changed, 0 insertions, 0 deletions