[PATCH] x86-64: set node_possible_map at runtime - try 2

Set the node_possible_map at runtime on x86_64.  On a non NUMA system,
num_possible_nodes() will now say '1'.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/arch/x86_64/mm/k8topology.c b/arch/x86_64/mm/k8topology.c
index b5b8dba28b4e..60e860e5ef4c 100644
--- a/arch/x86_64/mm/k8topology.c
+++ b/arch/x86_64/mm/k8topology.c
@@ -49,11 +49,8 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
         int found = 0;
         u32 reg;
         unsigned numnodes;
-        nodemask_t nodes_parsed;
         unsigned dualcore = 0;
 
-        nodes_clear(nodes_parsed);
-
         if (!early_pci_allowed())
                 return -1;
 
@@ -102,7 +99,7 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
                                nodeid, (base>>8)&3, (limit>>8) & 3); 
                         return -1; 
                 }       
-                if (node_isset(nodeid, nodes_parsed)) { 
+                if (node_isset(nodeid, node_possible_map)) {
                         printk(KERN_INFO "Node %d already present. Skipping\n", 
                                nodeid);
                         continue;
@@ -155,7 +152,7 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 
                 prevbase = base;
 
-                node_set(nodeid, nodes_parsed);
+                node_set(nodeid, node_possible_map);
         } 
 
         if (!found)