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    SubjectRe: [tip:perf/urgent] perf, x86: Catch spurious interrupts after disabling counters
    On 29.09.10 11:27:45, Cyrill Gorcunov wrote:
    > On Wed, Sep 29, 2010 at 05:12:53PM +0200, Robert Richter wrote:
    > > On 29.09.10 17:01:40, Robert Richter wrote:
    > > > Right, I wasn't remembering correctly, it was P6 and core. And yes, P4
    > > > requires the fix. Will send a patch for this.
    > >
    > > Ok, Cyrill is sending the patch.
    > >
    > > Thanks,
    > >
    > > -Robert
    > >
    >
    > Managed to implement it earlier then I thought.
    >
    > Cyrill
    > ---
    > Subject: [PATCH -tip] perf, x86: Handle in flight IRQs on P4 platform
    >
    > Stephane reported we've missed to guard P4 platform
    > against spurious in-flight performance IRQs. Fix it.
    >
    > [ the patch is a complement to commit 63e6be6d98e1 ]
    >
    > Reported-by: Stephane Eranian <eranian@google.com>
    > Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
    > CC: Robert Richter <robert.richter@amd.com>
    > CC: Lin Ming <ming.m.lin@intel.com>
    > ---
    > arch/x86/kernel/cpu/perf_event_p4.c | 6 +++++-
    > 1 file changed, 5 insertions(+), 1 deletion(-)

    The fix looks correct to me.

    -Robert

    --
    Advanced Micro Devices, Inc.
    Operating System Research Center



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