x86: increase size of APICID

Increase the number of bits in an apicid from 8 to 32.

By default, MP_processor_info() gets the APICID from the
mpc_config_processor structure. However, this structure limits
the size of APICID to 8 bits. This patch allows the caller of
MP_processor_info() to optionally pass a larger APICID that will
be used instead of the one in the mpc_config_processor struct.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 04e06c8226e3..1bae9c855ceb 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -20,6 +20,7 @@
 #include <asm/proto.h>
 #include <asm/numa.h>
 #include <asm/e820.h>
+#include <asm/genapic.h>
 
 int acpi_numa __initdata;
 
@@ -148,7 +149,10 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
                 return;
         }
 
-        apic_id = pa->apic_id;
+        if (is_uv_system())
+                apic_id = (pa->apic_id << 8) | pa->local_sapic_eid;
+        else
+                apic_id = pa->apic_id;
         apicid_to_node[apic_id] = node;
         acpi_numa = 1;
         printk(KERN_INFO "SRAT: PXM %u -> APIC %u -> Node %u\n",