x86: reduce memory and intra-node effects

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index f9919c492699..85bd3d463cdf 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -1175,14 +1175,15 @@ __cpuinit int apic_is_clustered_box(void)
 {
         int i, clusters, zeros;
         unsigned id;
+        u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;
         DECLARE_BITMAP(clustermap, NUM_APIC_CLUSTERS);
 
         bitmap_zero(clustermap, NUM_APIC_CLUSTERS);
 
         for (i = 0; i < NR_CPUS; i++) {
                 /* are we being called early in kernel startup? */
-                if (x86_bios_cpu_apicid_early_ptr) {
-                        id = ((u16 *)x86_bios_cpu_apicid_early_ptr)[i];
+                if (bios_cpu_apicid) {
+                        id = bios_cpu_apicid[i];
                 }
                 else if (i < nr_cpu_ids) {
                         if (cpu_present(i))