diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 466e83a54572..f5f43284b4a0 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -238,8 +238,6 @@ static void notrace start_secondary(void *unused)
 	x86_cpuinit.early_percpu_clock_init();
 	smp_callin();
 
-	/* otherwise gcc will move up smp_processor_id before the cpu_init */
-	barrier();
 	/* Check TSC synchronization with the control CPU: */
 	check_tsc_sync_target();