linux-kernel - Re: [PATCH] x86/pvclock-xen: zero last

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Date:	Fri, 26 Nov 2010 11:40:47 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	"Xen-devel@...ts.xensource.com" <Xen-devel@...ts.xensource.com>,
	kvm-devel <kvm@...r.kernel.org>,
	Glauber Costa <glommer@...hat.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Virtualization <virtualization@...ts.linux-foundation.org>,
	Olivier Hanesse <olivier.hanesse@...il.com>,
	Avi Kivity <avi@...hat.com>,
	Eelco Dolstra <e.dolstra@...elft.nl>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86/pvclock-xen: zero last_value on resume


* Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> On 10/26/2010 09:59 AM, Jeremy Fitzhardinge wrote:
> >
> > If the guest domain has been suspend/resumed or migrated, then the
> > system clock backing the pvclock clocksource may revert to a smaller
> > value (ie, can be non-monotonic across the migration/save-restore).
> > Make sure we zero last_value in that case so that the domain
> > continues to see clock updates.
> 
> Ping?  Looks like this fell through the gaps.

Does not apply cleanly here - mind resending the latest version?

Thanks,

	Ingo
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