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| author | Huang Ying <ying.huang@intel.com> | 2011-12-08 04:25:50 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-01-17 09:54:46 +0100 |
| commit | 4134b8c8811f23aa8a281db50dcee64dda414736 (patch) | |
| tree | 92b5c931590dba047f6634b401a45b6f8ccd1aed /drivers/acpi/acpica/acconfig.h | |
| parent | ACPI, Record ACPI NVS regions (diff) | |
| download | linux-4134b8c8811f23aa8a281db50dcee64dda414736.tar.xz linux-4134b8c8811f23aa8a281db50dcee64dda414736.zip | |
ACPI, APEI, Resolve false conflict between ACPI NVS and APEI
Some firmware will access memory in ACPI NVS region via APEI. That
is, instructions in APEI ERST/EINJ table will read/write ACPI NVS
region. The original resource conflict checking in APEI code will
check memory/ioport accessed by APEI via general resource management
mech. But ACPI NVS region is marked as busy already, so that the
false resource conflict will prevent APEI ERST/EINJ to work.
To fix this, this patch excludes ACPI NVS regions when APEI components
request resources. So that they will not conflict with ACPI NVS
regions.
Reported-and-tested-by: Pavel Ivanov <paivanof@gmail.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/acconfig.h')
0 files changed, 0 insertions, 0 deletions