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| author | Fernando Luis [** ISO-8859-1 charset **] VázquezCao <fernando@oss.ntt.co.jp> | 2007-05-02 19:27:18 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:18 +0200 |
| commit | 70ae77f497a57b3ef6b0987b6310327264517cb0 (patch) | |
| tree | d9ef56b103a6b3d33dd7280b276c08ee5a6b4f49 | |
| parent | f5efb41e793ce587836b89b7191083b9a6185ed5 (diff) | |
| download | linux-70ae77f497a57b3ef6b0987b6310327264517cb0.tar.gz linux-70ae77f497a57b3ef6b0987b6310327264517cb0.tar.bz2 linux-70ae77f497a57b3ef6b0987b6310327264517cb0.zip | |
[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>
| -rw-r--r-- | include/asm-x86_64/ipi.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/asm-x86_64/ipi.h b/include/asm-x86_64/ipi.h index 26961e671948..a7c75ea408a8 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 |