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i386: Fix the K7 NMI watchdog checkbit

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The performance counters on K7 are only 48 bits wide, so using bit 63 to
check if the counter overflowed is wrong. Let's use bit 47 instead.

Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Cc: Don Zickus <dzickus@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Björn Steinbrink 2007-07-22 11:12:41 +02:00 committed by Linus Torvalds
parent e05aff854c
commit a284b0518d
1 changed files with 1 additions and 1 deletions
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arch/i386/kernel/cpu/perfctr-watchdog.c
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@ -325,7 +325,7 @@ static struct wd_ops k7_wd_ops = {
.stop = single_msr_stop_watchdog,
.perfctr = MSR_K7_PERFCTR0,
.evntsel = MSR_K7_EVNTSEL0,
.checkbit = 1ULL<<63,
.checkbit = 1ULL<<47,
};
/* Intel Model 6 (PPro+,P2,P3,P-M,Core1) */