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[PATCH] x86-64: Use safe_apic_wait_icr_idle in __send_IPI_dest_field - x86_64 

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 f5efb41e79
commit 70ae77f497
1 changed files with 4 additions and 1 deletions
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5
include/asm-x86_64/ipi.h
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@ -85,7 +85,10 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector, unsigned
/*
* 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