On 2009年9月18日, Han, Weidong wrote:
> Stefano Stabellini wrote:
> > On 2009年9月16日, 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.
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