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ACPI: NUMA: map pxms to low node ids

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pxms are mapped to low node ids to maintain generic kernel use of
functions such as pxm_to_node() that are used to determine device
affinity.  Otherwise, there is no pxm-to-node and node-to-pxm matching
rule for x86_64 users of NUMA emulation where a single pxm may be bound
to multiple NUMA nodes.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
David Rientjes 2010-03-25 16:33:04 -07:00 committed by Len Brown
parent 2eaa9cfdf3
commit 0f9b75ef37
1 changed files with 4 additions and 2 deletions
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6
drivers/acpi/numa.c
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@ -61,8 +61,10 @@ int node_to_pxm(int node)
void __acpi_map_pxm_to_node(int pxm, int node)
{
pxm_to_node_map[pxm] = node;
node_to_pxm_map[node] = pxm;
if (pxm_to_node_map[pxm] == NUMA_NO_NODE || node < pxm_to_node_map[pxm])
pxm_to_node_map[pxm] = node;
if (node_to_pxm_map[node] == PXM_INVAL || pxm < node_to_pxm_map[node])
node_to_pxm_map[node] = pxm;
}
int acpi_map_pxm_to_node(int pxm)