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| author | Kurt Garloff <kurt@garloff.de> | 2012-01-17 04:18:02 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 16:13:46 -0800 |
| commit | 45ed93deefc42db6c0cf3154f50f5f6404d7ecf5 (patch) | |
| tree | 3344229d577646b8ab6b2a2f05576841bd7e4810 /include | |
| parent | caa3e3bed0bf0ec356101811dcd46c9603ec3788 (diff) | |
| download | lwn-45ed93deefc42db6c0cf3154f50f5f6404d7ecf5.tar.gz lwn-45ed93deefc42db6c0cf3154f50f5f6404d7ecf5.zip | |
ACPI: Store SRAT table revision
commit 8df0eb7c9d96f9e82f233ee8b74e0f0c8471f868 upstream.
In SRAT v1, we had 8bit proximity domain (PXM) fields; SRAT v2 provides
32bits for these. The new fields were reserved before.
According to the ACPI spec, the OS must disregrard reserved fields.
In order to know whether or not, we must know what version the SRAT
table has.
This patch stores the SRAT table revision for later consumption
by arch specific __init functions.
Signed-off-by: Kurt Garloff <kurt@garloff.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/acpi/acpi_numa.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h index 173972672175..451823cb8837 100644 --- a/include/acpi/acpi_numa.h +++ b/include/acpi/acpi_numa.h @@ -15,6 +15,7 @@ extern int pxm_to_node(int); extern int node_to_pxm(int); extern void __acpi_map_pxm_to_node(int, int); extern int acpi_map_pxm_to_node(int); +extern unsigned char acpi_srat_revision; #endif /* CONFIG_ACPI_NUMA */ #endif /* __ACP_NUMA_H */ |