RE: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Fri, 18 Sep 2009, Han, Weidong wrote:
> Stefano Stabellini wrote:
> > On Wed, 16 Sep 2009, Han, Weidong wrote:
> >> I heard VT-d didn't work with stubdom, it needs some efforts to
> >> support it. Actually I didn't try stubdom with VT-d. 
> >> 
> > 
> > You are right, currently stubdom doesn't work with passthrough.
> > I have a patch series to make it work but it is not finished yet and I
> > have been pulled on other projects; I hope to resume my work on that
> > in the near future.
> > 
> > In any case the fact the currently passthrough doesn't work with
> > stubdom is not a good reason for introducing even more problematic
> > changes.
> 
> There are many changes on qemu for gfx passthrough, copying and mapping vbios 
> in qemu just a small part. If other changes on qemu can be implemented 
> correspondingly in stubdom, why not copying and mapping vbios in qemu?
> 

Because it would require the stubdom to be able to read the vgabios and
it would be better if we avoid it.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel