1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index b8725461d887..b0337d314604 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -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)