x86, perfctr: don't use CCCR_OVF_PMI1 on Pentium 4Ds

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Currently, setup_p4_watchdog() use CCCR_OVF_PMI1 to enable the counter
overflow interrupts to the second logical core. But this bit doesn't work
on Pentium 4 Ds (model 4, stepping 4) and this patch avoids its use on
these processors. Tested on 4 different machines that have this
specific model with success.

Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Cc: jvillalovos@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Aristeu Rozanski 2008-08-14 16:32:15 -04:00 • committed by Ingo Molnar

parent 975439fe73

commit dcc9841668

1 changed files with 7 additions and 1 deletions

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arch/x86/kernel/cpu/perfctr-watchdog.c

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