linux-kernel - Re: [patch 134/149] x86, paravirt: Add a global synchronization point for pvclock

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Message-ID: <20100708110334.GT4689@redhat.com>
Date:	Thu, 8 Jul 2010 14:03:34 +0300
From:	Gleb Natapov <gleb@...hat.com>
To:	Peter Palfrader <peter@...frader.org>,
	Glauber Costa <glommer@...hat.com>, Greg KH <gregkh@...e.de>,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Zachary Amsden <zamsden@...hat.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Avi Kivity <avi@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>
Subject: Re: [patch 134/149] x86, paravirt: Add a global synchronization
 point for pvclock

On Thu, Jul 08, 2010 at 10:51:14AM +0200, Peter Palfrader wrote:
> On Thu, 08 Jul 2010, Gleb Natapov wrote:
> 
> > > > And what if you provide -cpu qemu64,-kvmclock to qemu command line?
> > > 
> > > Adding that to the glob of options that already were there from libvirt
> > > didn't disable it, but using an LD_PRELOAD wrapper[1] to that purpose on
> > > the host when starting kvm did help.
> > > 
> > Strange. -kvmclock should have had the same effect. What qemu is it?
> > What is your command line?
> 
> | QEMU PC emulator version 0.11.1 (qemu-kvm-0.11.1), Copyright (c) 2003-2008 Fabrice Bellard
> from the debian package qemu-kvm (0.11.1+dfsg-1~bpo50+1)
That explain it. 0.11 is really old. Don't have this ability.

> [should we trim the CC list?  If yes, to what?]
Better not to.

--
			Gleb.
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