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Commit fa8004d8 authored by Glauber de Oliveira Costa's avatar Glauber de Oliveira Costa Committed by Ingo Molnar
Browse files

x86: add barriers statement 



goal is to have i386 and x86_64 closer, so we
add barriers to match

Signed-off-by: default avatarGlauber Costa <gcosta@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 148a30f8

arch/x86/kernel/smpboot_32.c

+4 −0
Original line number Diff line number Diff line
@@ -180,6 +180,9 @@ static void __cpuinit start_secondary(void *unused) 
	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 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) 
	Dprintk("Waiting for send to finish...\n");

	send_status = safe_apic_wait_icr_idle();



	mb();

	atomic_set(&init_deasserted, 1);



	/*

arch/x86/kernel/smpboot_64.c

+1 −0
Original line number Diff line number Diff line
@@ -239,6 +239,7 @@ void __cpuinit start_secondary(void) 


	setup_secondary_clock();



	wmb();

	cpu_idle();

}