[PATCH] i386: Use safe_apic_wait_icr_idle in safe_apic_wait_icr_idle - i386
Use safe_apic_wait_icr_idle to check ICR idle bit if the vector is
NMI_VECTOR to avoid potential hangups in the event of crash when kdump
tries to stop the other CPUs.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index d14ffe2..f866710 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -175,7 +175,10 @@
/*
* Wait for idle.
*/
- apic_wait_icr_idle();
+ if (unlikely(vector == NMI_VECTOR))
+ safe_apic_wait_icr_idle();
+ else
+ apic_wait_icr_idle();
/*
* prepare target chip field