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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
commitf5efb41e793ce587836b89b7191083b9a6185ed5 (patch)
tree073c0d6b8bd2feb5b287d88211a772f186951266 /arch/i386
parent9062d888aa448318e38792b6879a795dd10adda4 (diff)
[PATCH] i386: Use safe_apic_wait_icr_idle in safe_apic_wait_icr_idle - i386
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 'arch/i386')
-rw-r--r--arch/i386/kernel/smp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index d14ffe2109b..f8667109db1 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -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