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Commit 0f9b75ef authored by David Rientjes's avatar David Rientjes Committed by Len Brown
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ACPI: NUMA: map pxms to low node ids 



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: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 2eaa9cfd

drivers/acpi/numa.c

+4 −2
Original line number Original line Diff line number Diff line
@@ -61,7 +61,9 @@ int node_to_pxm(int node) 




void __acpi_map_pxm_to_node(int pxm, int node)

void __acpi_map_pxm_to_node(int pxm, int node)

{

{

	if (pxm_to_node_map[pxm] == NUMA_NO_NODE || node < pxm_to_node_map[pxm])

		pxm_to_node_map[pxm] = node;

		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;

		node_to_pxm_map[node] = pxm;

}

}