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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 | f5efb41e793ce587836b89b7191083b9a6185ed5 (patch) | |
| tree | 073c0d6b8bd2feb5b287d88211a772f186951266 /arch/i386/kernel | |
| parent | 9062d888aa448318e38792b6879a795dd10adda4 (diff) | |
| download | linux-f5efb41e793ce587836b89b7191083b9a6185ed5.tar.gz linux-f5efb41e793ce587836b89b7191083b9a6185ed5.tar.bz2 linux-f5efb41e793ce587836b89b7191083b9a6185ed5.zip | |
[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/kernel')
| -rw-r--r-- | arch/i386/kernel/smp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index d14ffe2109b8..f8667109db1c 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 |