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| author | Huang Ying <ying.huang@intel.com> | 2011-12-08 04:25:49 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-01-17 09:54:44 +0100 |
| commit | b54ac6d2a25084667da781c7ca2cebef52a2bcdd (patch) | |
| tree | b4dbaa790dcecff6b5b0772846d43b360f6389d7 /arch/x86/kernel/io_delay.c | |
| parent | ACPI, APEI, EINJ, Refine the fix of resource conflict (diff) | |
| download | linux-b54ac6d2a25084667da781c7ca2cebef52a2bcdd.tar.xz linux-b54ac6d2a25084667da781c7ca2cebef52a2bcdd.zip | |
ACPI, Record ACPI NVS regions
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
mechanism. 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 record ACPI NVS regions, so that we can avoid
request resources for memory region inside it.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86/kernel/io_delay.c')
0 files changed, 0 insertions, 0 deletions