linux-kernel - Re: [PATCH 1/6] KVM: SVM: Advance instruction pointer in dr

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Message-ID: <20110222143306.GJ16508@amd.com>
Date:	Tue, 22 Feb 2011 15:33:06 +0100
From:	"Roedel, Joerg" <Joerg.Roedel@....com>
To:	Avi Kivity <avi@...hat.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Zachary Amsden <zamsden@...hat.com>
Subject: Re: [PATCH 1/6] KVM: SVM: Advance instruction pointer in
 dr_intercept

On Tue, Feb 22, 2011 at 09:01:51AM -0500, Avi Kivity wrote:
> On 02/22/2011 01:14 PM, Roedel, Joerg wrote:
> > On Wed, Feb 09, 2011 at 12:29:39PM -0500, Joerg Roedel wrote:
> > >  In the dr_intercept function a new cpu-feature called
> > >  decode-assists is implemented and used when available. This
> > >  code-path does not advance the guest-rip causing the guest
> > >  to dead-loop over mov-dr instructions. This is fixed by this
> > >  patch.
> > >
> >
> > Btw. Can you meanwhile apply this patch? It fixes a bug which sends the
> > guest into an endless loop when decode assists is available on the host.
> 
> Yes of course - should have done that myself.  Applied now, and queued 
> for 2.6.38.

Great, thanks.

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