Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=70ae77f497a57b3ef6b0987b6310327264517cb0
Commit: 70ae77f497a57b3ef6b0987b6310327264517cb0
Parent: f5efb41e793ce587836b89b7191083b9a6185ed5
Author: Fernando Luis [** ISO-8859-1 charset **] V�zquezCao <[EMAIL
PROTECTED]>
AuthorDate: Wed May 2 19:27:18 2007 +0200
Committer: Andi Kleen <[EMAIL PROTECTED]>
CommitDate: Wed May 2 19:27:18 2007 +0200
[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 <[EMAIL PROTECTED]>
Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>
---
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 26961e6..a7c75ea 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
-
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