From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Pekka Enberg <penberg@kernel.org>
Cc: Sasha Levin <levinsasha928@gmail.com>,
Asias He <asias.hejun@gmail.com>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
KVM General <kvm@vger.kernel.org>
Subject: Re: perf uncore & lkvm woes
Date: Thu, 16 Aug 2012 11:16:33 +0400 [thread overview]
Message-ID: <20120816071633.GA1209@moon> (raw)
In-Reply-To: <20120816070743.GB32081@moon>
On Thu, Aug 16, 2012 at 11:07:43AM +0400, Cyrill Gorcunov wrote:
> On Thu, Aug 16, 2012 at 10:01:58AM +0300, Pekka Enberg wrote:
> > Hello,
> > [ 0.248962] Pid: 0, comm: swapper/0 Not tainted 3.6.0-rc1+ #24
> > [penberg@tux ~]$ cat perf-kvmtool-issue
> > Hello,
> >
> > Has anyone seen this? It's kvmtool/next with 3.6.0-rc1. Looks like we
> > are doing uncore_init() on virtualized CPU which breaks boot.
>
> Hi, I guess some cpuid/msr bit is not cleared again ;) I'll take a look
> once time permit.
If only I'm not missing something we've two options 1) either tune up
cpu model via cpuid interception in lkvm (which is bad I think)
2) provide some new kernel boot line option to not use unboxed pmu.
Cyrill
next prev parent reply other threads:[~2012-08-16 7:16 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-16 7:01 perf uncore & lkvm woes Pekka Enberg
2012-08-16 7:07 ` Cyrill Gorcunov
2012-08-16 7:16 ` Cyrill Gorcunov [this message]
2012-08-16 7:16 ` Pekka Enberg
2012-08-16 7:19 ` Peter Zijlstra
2012-08-16 7:38 ` Yan, Zheng
2012-08-16 7:41 ` Pekka Enberg
2012-08-16 7:46 ` Cyrill Gorcunov
2012-08-16 8:45 ` Avi Kivity
2012-08-16 9:06 ` Cyrill Gorcunov
2012-08-16 9:23 ` Pekka Enberg
2012-08-16 8:40 ` Avi Kivity
2012-08-16 11:06 ` Avi Kivity
2012-08-16 11:17 ` Peter Zijlstra
2012-08-16 11:25 ` Avi Kivity
2012-08-17 1:40 ` Yan, Zheng
2012-08-17 6:56 ` Peter Zijlstra
2012-08-19 9:55 ` Avi Kivity
2012-08-20 4:15 ` Yan, Zheng
2012-08-20 8:49 ` Avi Kivity
2012-08-21 1:11 ` Yan, Zheng
2012-08-21 8:32 ` Avi Kivity
2012-08-21 9:07 ` Yan, Zheng
2012-08-20 5:30 ` Yan, Zheng
2012-08-20 8:48 ` Avi Kivity
2012-08-21 7:11 ` Peter Zijlstra
2012-08-21 8:34 ` Avi Kivity
2012-08-21 10:35 ` Peter Zijlstra
2012-08-22 8:53 ` Avi Kivity
2012-08-16 14:28 ` David Ahern
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