linux-kernel - Re: [PATCH -tip] perf, x86: fix unknown NMIs on a Pentium4 box

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Date:	Thu, 14 Apr 2011 22:14:40 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Shaun Ruffell <sruffell@...ium.com>
CC:	Ingo Molnar <mingo@...e.hu>, Lin Ming <ming.m.lin@...el.com>,
	Don Zickus <dzickus@...hat.com>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>,
	Robert Richter <robert.richter@....com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -tip] perf, x86: fix unknown NMIs on a Pentium4 box

On 04/14/2011 10:12 PM, Shaun Ruffell wrote:
> On Thu, Apr 14, 2011 at 09:49:37PM +0400, Cyrill Gorcunov wrote:
>> On 04/14/2011 09:44 PM, Ingo Molnar wrote:
>>>
>>> below is the commit which needs to be fixed - note that i improved the 
>>> changelog, please keep these fixes for future submissions.
>>
>> Yes, thanks, i'll ping back as only get nit resolved.
> 
> Cyrill, I had not been running perf when I was testing, but I was able to
> reproduce what Ingo reported. I'll make sure to run that on any future tests
> as well. My apologies.

It's mine error, no need for apologies. I suspect this issue might be related
to shared MSRs (iirc nehalem have some MSRs shared as well). I'm checking which
one might be involved.

-- 
    Cyrill
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