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From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Don Zickus <dzickus@redhat.com>
Cc: Shaun Ruffell <sruffell@digium.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Cyrill Gorcunov <gorcunov@openvz.org>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [regression 2.6.39-rc2][bisected] "perf, x86: P4 PMU - Read proper MSR register to catch" and NMIs
Date: Thu, 7 Apr 2011 07:18:50 +0400	[thread overview]
Message-ID: <BANLkTi=W45VbeBNThBqKv2Wbo+8sWxXjuA@mail.gmail.com> (raw)
In-Reply-To: <20110407001658.GW12642@redhat.com>

On Thursday, April 7, 2011, Don Zickus <dzickus@redhat.com> wrote:
> On Wed, Apr 06, 2011 at 05:30:36PM -0500, Shaun Ruffell wrote:
>> Hello Don,
>>
>> I was able to bisect it down to commit 242214f9c1eeaae40, but I'm not
>> certain where to go from here.  Is this something that is already known
>> or is there more information I should try to collect?
>
> Nope, this is an ongoing issue.  What happened was the perf P4 nmi handler
> was swallowing all the NMIs.  My patch fixed that and exposed a double NMI
> problem.  We have been chasing it for a couple of months.  I think Cyril
> was finally able to duplicate it (as he wrote the P4 code).  I have
> confidence that he will find a fix for it soon. :-)
>
> Thanks for the report though!
>
> Cheers,
> Don
>

Hi, yeah, i got it too and i hope to fix this issue soon. Will ping as
only get working fix.

  reply	other threads:[~2011-04-07  3:18 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-06 22:30 [regression 2.6.39-rc2][bisected] "perf, x86: P4 PMU - Read proper MSR register to catch" and NMIs Shaun Ruffell
2011-04-07  0:16 ` Don Zickus
2011-04-07  3:18   ` Cyrill Gorcunov [this message]
2011-04-07 14:38     ` Shaun Ruffell
2011-04-07 14:43       ` Cyrill Gorcunov
2011-04-13 19:33 ` Maciej Rutecki
2011-04-13 20:01   ` Cyrill Gorcunov
2011-04-13 20:35     ` Shaun Ruffell
2011-04-13 20:43       ` Cyrill Gorcunov
2011-04-13 21:22         ` Don Zickus
2011-04-13 21:25           ` Cyrill Gorcunov
2011-04-13 21:53             ` Shaun Ruffell
2011-04-14 14:30               ` Shaun Ruffell
2011-04-14 14:33                 ` Cyrill Gorcunov
2011-04-14  6:47     ` Ingo Molnar
2011-04-14  7:51       ` Cyrill Gorcunov
2011-04-14  8:05         ` Ingo Molnar
2011-04-14  9:27           ` Cyrill Gorcunov

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