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[PATCH] i386: Use safe_apic_wait_icr_idle in safe_apic_wait_icr_idle - i386

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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>
This commit is contained in:
Fernando Luis [** ISO-8859-1 charset **] VzquezCao 2007-05-02 19:27:18 +02:00 committed by Andi Kleen
parent 9062d888aa
commit f5efb41e79
1 changed files with 4 additions and 1 deletions
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5
arch/i386/kernel/smp.c
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@ -175,7 +175,10 @@ static inline void __send_IPI_dest_field(unsigned long mask, int vector)
/*
* 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