Commit a284b051 authored by Björn Steinbrink's avatar Björn Steinbrink Committed by Linus Torvalds
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i386: Fix the K7 NMI watchdog checkbit

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: default avatarBjörn Steinbrink <>
Cc: Don Zickus <>
Signed-off-by: default avatarAndi Kleen <>
Signed-off-by: default avatarLinus Torvalds <>
parent e05aff85
......@@ -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) */
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