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Date: Thu, 26 Aug 2010 13:18:29 +0400
Message-ID: <AANLkTim3+u-fV-RAC=Odede6BfGdYoXsN55Tqw6iSfVT@mail.gmail.com>
Subject: Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Robert Richter <robert.richter@amd.com>
Cc: Don Zickus <dzickus@redhat.com>, Ingo Molnar <mingo@elte.hu>,
        Peter Zijlstra <peterz@infradead.org>, Lin Ming <ming.m.lin@intel.com>,
        "fweisbec@gmail.com" <fweisbec@gmail.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Huang, Ying" <ying.huang@intel.com>, Yinghai Lu <yinghai@kernel.org>,
        Andi Kleen <andi@firstfloor.org>
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On Thu, Aug 26, 2010 at 1:00 PM, Robert Richter <robert.richter@amd.com> wrote:
...
>
> This could also be a race in the counter handling code, or we do not
> proper count the number of handled counters. Maybe 2 counters actually
> fired but we only noticed one counter and then accidentially cleared
> the 2nd without processing it.
>
> -Robert
>

Any chance to get it tested on P4 machine since it has a bit
different design?

Cyrill