Re: [Qemu-devel] [fedora-virt] Windows KVM thinks hardware changed when ported to f16?

[Alon Levy <alevy@redhat.com>]

On Sun, Nov 13, 2011 at 04:03:56PM +0200, Avi Kivity wrote:
> On 11/13/2011 04:00 PM, Alon Levy wrote:
> > On Sun, Nov 13, 2011 at 02:48:32PM +0200, Avi Kivity wrote:
> > > On 11/13/2011 02:41 PM, Alon Levy wrote:
> > > > On Sun, Nov 13, 2011 at 12:29:01PM +0200, Avi Kivity wrote:
> > > > > On 11/12/2011 07:19 PM, Alon Levy wrote:
> > > > > > On Sat, Nov 12, 2011 at 09:22:27AM -0500, Tom Horsley wrote:
> > > > > > > I just submitted this bug:
> > > > > > > 
> > > > > > > https://bugzilla.redhat.com/show_bug.cgi?id=753437
> > > > > > > 
> > > > > > > Apparently Windows XP thinks the video hardware has changed
> > > > > > > on fedora 16 host (I was using qxl and spice on fedora 15 host).
> > > > > > > 
> > > > > > > If this is expected rather than a bug, which drivers do I
> > > > > > > install to made XP happy when hosted on fedora 16?
> > > > > > > 
> > > > > > > The Windows XP machine on fedora 15 currently has the
> > > > > > > Red Hat QXL GPU version 1.4.1.0 (9/29/2010) video
> > > > > > > driver.
> > > > > >
> > > > > > That's because it has. We changed the revision from 2 to 3, I need to
> > > > > > fix that I guess - make sure it doesn't change if you use -M something.
> > > > > >
> > > > > 
> > > > > This needs to be done real quick.
> > > >
> > > > So I want all machines < pc-1.0 to use rev=2 by default, and pc-1.0 to
> > > > have rev=3 by default?
> > > 
> > > Yes.  But what about all guests already created with 0.15?  If it's just
> > > Fedora, then there's a small number of them hopefully.  But we can't be
> > > sure of it.
> >
> > Going after each distribution that packages qemu? No way to do this, I
> > can just hope any packager who encounters this problem comes to
> > spice-devel/qemu-devel.
> >
> >
> 
> I'm talking about guests.  Images created with 0.15 know that rev=3,
> with 1.0 (or 0.15.next) they'll be back to rev=2.
> 

Ok, my mistake. So yes, there will now be both pc-0.14 with rev 3 and
2. For migrations there is no problem since the revision is migrated
(since it could be set from the command line anyway). Otherwise, doing
a shutdown, upgrading qemu, and starting the vm again - yes. Other then
"this should never have happened" any suggestions?

> -- 
> error compiling committee.c: too many arguments to function
> 
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