1 files changed, 13 insertions, 9 deletions

diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 5c0637e4c2f4..b367bc342fe0 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -130,6 +130,9 @@ void __init
 acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
 {
         int pxm, node;
+        int apic_id;
+
+        apic_id = pa->apic_id;
         if (srat_disabled())
                 return;
         if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) {
@@ -145,10 +148,10 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
                 bad_srat();
                 return;
         }
-        apicid_to_node[pa->apic_id] = node;
+        apicid_to_node[apic_id] = node;
         acpi_numa = 1;
         printk(KERN_INFO "SRAT: PXM %u -> APIC %u -> Node %u\n",
-               pxm, pa->apic_id, node);
+               pxm, apic_id, node);
 }
 
 int update_end_of_memory(unsigned long end) {return -1;}
@@ -343,7 +346,8 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
         /* First clean up the node list */
         for (i = 0; i < MAX_NUMNODES; i++) {
                 cutoff_node(i, start, end);
-                if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) {
+                /* ZZZ why was this needed. At least add a comment */
+                if (nodes[i].end && (nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) {
                         unparse_node(i);
                         node_set_offline(i);
                 }
@@ -384,6 +388,12 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
 }
 
 #ifdef CONFIG_NUMA_EMU
+static int fake_node_to_pxm_map[MAX_NUMNODES] __initdata = {
+        [0 ... MAX_NUMNODES-1] = PXM_INVAL
+};
+static unsigned char fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
+        [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
+};
 static int __init find_node_by_addr(unsigned long addr)
 {
         int ret = NUMA_NO_NODE;
@@ -414,12 +424,6 @@ static int __init find_node_by_addr(unsigned long addr)
 void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes)
 {
         int i, j;
-        int fake_node_to_pxm_map[MAX_NUMNODES] = {
-                [0 ... MAX_NUMNODES-1] = PXM_INVAL
-        };
-        unsigned char fake_apicid_to_node[MAX_LOCAL_APIC] = {
-                [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
-        };
 
         printk(KERN_INFO "Faking PXM affinity for fake nodes on real "
                          "topology.\n");