Messages in this thread | | | Date | Fri, 7 Jan 2011 14:10:52 -0500 | From | Don Zickus <> | Subject | Re: [PATCH -tip/master] perf, x86: P4 PMU - Fix unflagged overflows handling v4 |
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On Fri, Jan 07, 2011 at 09:42:06PM +0300, Cyrill Gorcunov wrote: > Don found that P4 PMU reads CCCR register instead of counter > itself (in attempt to catch unflagged event) this makes P4 > NMI handler to consume all NMIs it observes. So the other > NMI users such as kgdb simply have no chance to get NMI > on their hands.
Acked-by: Don Zickus <dzickus@redhat.com>
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