Re: [Xen-devel] Re: [PATCH 0/3] VT-d: support Intel IGD passthrough

[Weidong Han <weidong.han@xxxxxxxxx>]

Andrew Lyon wrote:
> On Fri, Feb 5, 2010 at 2:11 AM, Han, Weidong <weidong.han@xxxxxxxxx> wrote:
>   
> > Current Xen only supports to pass-through primary gfx card. The secondary gfx 
> > pass-through patch is not in Xen yet. I think it needs to think more clearly 
> > about secondary gfx pass-through usage and implementation.
> >
> > Regards,
> > Weidong
> >     
> Do you have a patch for secondary passthru on Xen 4? I seem to recall
>   
No, we won't push this support in Xen 4, because it still needs more 
thinking about secondary gfx passthru usage and implementation.
> somebody had been successful with secondary passthru using an
> additional patch but I cannot find it.
>   
You can search subject "graphics passthrough with VT-d" in xen-devel 
mailing list. There are lots of discussion in the thread. I attached the 
mail which contains the patches for secondary gfx passthrough with some 
other hacks. You can have a try with them.
Regards,
Weidong

> I'd like to give it a try, I have one system with 2 x radeon x1950's
> and another with Quadro FX380 and GeForce 9500 GT, both currently
> running X, xen 3.4.2 with 2.6.31.12 suse patched dom0.
>
> Andy
>
>   
> > -----Original Message-----
> > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> > [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Christian Tramnitz
> > Sent: Thursday, February 04, 2010 8:15 PM
> > To: xen-devel@xxxxxxxxxxxxxxxxxxx
> > Subject: [Xen-devel] Re: [PATCH 0/3] VT-d: support Intel IGD passthrough
> >
> > Thanks for updating those patches to current xen.
> >
> > Is IGD pass-through also supposed to work when the IGD is not the
> > primary gfx card?
> >
> >
> > Best regards,
> >    Christian
> >
> >
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> >
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> >
> >

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