Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / x86 / mm / srat_64.c

diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index a35cb9d8b0606bc8f7123cd15f0017972a5e8dda..603d285d1daa918e90069ff97697ef57ee3160e6 100644 (file)
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -134,6 +134,10 @@ acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
        }
 
        apic_id = pa->apic_id;
+       if (apic_id >= MAX_LOCAL_APIC) {
+               printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
+               return;
+       }
        apicid_to_node[apic_id] = node;
        node_set(node, cpu_nodes_parsed);
        acpi_numa = 1;
@@ -168,6 +172,12 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
                apic_id = (pa->apic_id << 8) | pa->local_sapic_eid;
        else
                apic_id = pa->apic_id;
+
+       if (apic_id >= MAX_LOCAL_APIC) {
+               printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
+               return;
+       }
+
        apicid_to_node[apic_id] = node;
        node_set(node, cpu_nodes_parsed);
        acpi_numa = 1;
@@ -339,18 +349,19 @@ static int __init nodes_cover_memory(const struct bootnode *nodes)
 
 void __init acpi_numa_arch_fixup(void) {}
 
-int __init acpi_get_nodes(struct bootnode *physnodes)
+#ifdef CONFIG_NUMA_EMU
+void __init acpi_get_nodes(struct bootnode *physnodes, unsigned long start,
+                               unsigned long end)
 {
        int i;
-       int ret = 0;
 
        for_each_node_mask(i, nodes_parsed) {
-               physnodes[ret].start = nodes[i].start;
-               physnodes[ret].end = nodes[i].end;
-               ret++;
+               cutoff_node(i, start, end);
+               physnodes[i].start = nodes[i].start;
+               physnodes[i].end = nodes[i].end;
        }
-       return ret;
 }
+#endif /* CONFIG_NUMA_EMU */
 
 /* Use the information discovered above to actually set up the nodes. */
 int __init acpi_scan_nodes(unsigned long start, unsigned long end)
@@ -495,8 +506,6 @@ void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes)
 {
        int i, j;
 
-       printk(KERN_INFO "Faking PXM affinity for fake nodes on real "
-                        "topology.\n");
        for (i = 0; i < num_nodes; i++) {
                int nid, pxm;
 
@@ -516,6 +525,17 @@ void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes)
                            fake_apicid_to_node[j] == NUMA_NO_NODE)
                                fake_apicid_to_node[j] = i;
        }
+
+       /*
+        * If there are apicid-to-node mappings for physical nodes that do not
+        * have a corresponding emulated node, it should default to a guaranteed
+        * value.
+        */
+       for (i = 0; i < MAX_LOCAL_APIC; i++)
+               if (apicid_to_node[i] != NUMA_NO_NODE &&
+                   fake_apicid_to_node[i] == NUMA_NO_NODE)
+                       fake_apicid_to_node[i] = 0;
+
        for (i = 0; i < num_nodes; i++)
                __acpi_map_pxm_to_node(fake_node_to_pxm_map[i], i);
        memcpy(apicid_to_node, fake_apicid_to_node, sizeof(apicid_to_node));