x86: add barriers statement
goal is to have i386 and x86_64 closer, so we
add barriers to match
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 4e5416e..a232f4d 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -180,6 +180,9 @@
smp_callin();
while (!cpu_isset(smp_processor_id(), smp_commenced_mask))
cpu_relax();
+
+ /* otherwise gcc will move up smp_processor_id before the cpu_init */
+ barrier();
/*
* Check TSC synchronization with the BP:
*/
@@ -432,6 +435,7 @@
Dprintk("Waiting for send to finish...\n");
send_status = safe_apic_wait_icr_idle();
+ mb();
atomic_set(&init_deasserted, 1);
/*