linux-kernel - Re: [bisected] Clocksource tsc unstable git

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Message-ID: <20101029131332.GC21125@aftab>
Date:	Fri, 29 Oct 2010 15:13:32 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Markus Trippelsdorf <markus@...ppelsdorf.de>
Cc:	Borislav Petkov <bp@...en8.de>, john stultz <johnstul@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hpa@...ux.intel.com" <hpa@...ux.intel.com>,
	Ingo Molnar <mingo@...e.hu>,
	"Herrmann3, Andreas" <Andreas.Herrmann3@....com>,
	"heiko.carstens@...ibm.com" <heiko.carstens@...ibm.com>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"avi@...hat.com" <avi@...hat.com>,
	"mtosatti@...hat.com" <mtosatti@...hat.com>
Subject: Re: [bisected] Clocksource tsc unstable git

On Fri, Oct 29, 2010 at 07:54:38AM -0400, Markus Trippelsdorf wrote:
> On Fri, Oct 29, 2010 at 01:39:34PM +0200, Borislav Petkov wrote:
> > On Fri, Oct 29, 2010 at 07:34:33AM -0400, Markus Trippelsdorf wrote:
> > > > Markus, can you verify this on your system by compiling x86info from
> > > > git://git.choralone.org/git/x86info and doing
> > > > 
> > > > ./lsmsr Int
> > > 
> > > 
> > > x86info v1.28beta.  Dave Jones 2001-2010
> > > Feedback to <davej@...hat.com>.
> > > 
> > > Found 4 CPUs
> > > --------------------------------------------------------------------------
> > > CPU #1
> > > EFamily: 1 EModel: 0 Family: 15 Model: 4 Stepping: 2
> > > CPU Model: Quad-Core Opteron/Phenom II (RB-C2)
> > 
> > well, x86info doesn't help - there's a lsmsr tool which is being built
> > too but no need, I can infer the info from your revision: your CPU is
> > RB-C2 which does SMI initiated C1E.
> 
> Sorry. Here is the correct output:
> 
> IntPendingMessage    = 0x0000000008c200b0

Yep, bit 27 is set, SmiOnCmpHalt.

Thanks.

-- 
Regards/Gruss,
Boris.

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