2 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index a54512bea629..93718ffb9b9c 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -1600,6 +1600,13 @@ void __cpuinit generic_processor_info(int apicid, int version)
         cpu_set(cpu, cpu_present_map);
 }
 
+#ifdef CONFIG_X86_64
+int hard_smp_processor_id(void)
+{
+        return read_apic_id();
+}
+#endif
+
 /*
  * Power management
  */
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index d3ec746aede4..eeb69838c2f8 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -1612,10 +1612,12 @@ void __cpuinit generic_processor_info(int apicid, int version)
         cpu_set(cpu, cpu_present_map);
 }
 
+#ifdef CONFIG_X86_64
 int hard_smp_processor_id(void)
 {
         return read_apic_id();
 }
+#endif
 
 /*
  * Power management