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authorFernando Luis [** ISO-8859-1 charset **] VázquezCao <fernando@oss.ntt.co.jp>2007-05-02 19:27:18 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:18 +0200
commit70ae77f497a57b3ef6b0987b6310327264517cb0 (patch)
treed9ef56b103a6b3d33dd7280b276c08ee5a6b4f49 /include/asm-x86_64
parentf5efb41e793ce587836b89b7191083b9a6185ed5 (diff)
[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>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/ipi.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/asm-x86_64/ipi.h b/include/asm-x86_64/ipi.h
index 26961e67194..a7c75ea408a 100644
--- a/include/asm-x86_64/ipi.h
+++ b/include/asm-x86_64/ipi.h
@@ -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