diff --git a/include/asm-x86_64/smp.h b/include/asm-x86_64/smp.h
index f62fda527439744e1f9b991341fe5a80a7bf1ea3..3f303d2365ed68d9b207b43976bd1c3aa2282e51 100644
--- a/include/asm-x86_64/smp.h
+++ b/include/asm-x86_64/smp.h
@@ -57,12 +57,6 @@ static inline int num_booting_cpus(void)
 
 #define raw_smp_processor_id() read_pda(cpunumber)
 
-static inline int hard_smp_processor_id(void)
-{
-	/* we don't want to mark this access volatile - bad code generation */
-	return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
-}
-
 extern int __cpu_disable(void);
 extern void __cpu_die(unsigned int cpu);
 extern void prefill_possible_map(void);
@@ -71,10 +65,14 @@ extern unsigned __cpuinitdata disabled_cpus;
 
 #define NO_PROC_ID		0xFF		/* No processor magic marker */
 
-#else /* CONFIG_SMP */
-#define hard_smp_processor_id() 0
 #endif /* CONFIG_SMP */
 
+static inline int hard_smp_processor_id(void)
+{
+	/* we don't want to mark this access volatile - bad code generation */
+	return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
+}
+
 /*
  * Some lowlevel functions might want to know about
  * the real APIC ID <-> CPU # mapping.