Re: [Xen-devel] Xen VGA graphics passthrough for secondary adapters, vBAR=pBAR etc

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Mon, 12 Apr 2010, Pasi Kärkkäinen wrote:
> On Mon, Apr 12, 2010 at 10:34:14AM +0100, Stefano Stabellini wrote:
> > On Mon, 12 Apr 2010, Pasi Kärkkäinen wrote:
> > > Hello,
> > > 
> > > Now that Xen 4.0.0 is out and has support for primary graphics passthru
> > > and many people have been using it already and asking for a status update
> > > for secondary adapter passthru I thought of opening a new thread about 
> > > this.
> > > 
> > > What are the actual issues that need to be resolved to get the 
> > > secondary graphics passthru working? Probably related to VGA BIOS 
> > > execution
> > > in the guest? 
> > > 
> > > How about the vBAR=pBAR stuff required for some (Nvidia) cards? 
> > > How do we get that functionality integrated so people don't need 
> > > additional patches? 
> > > 
> > > Was there also a problem that a working VGA BIOS cannot be copied from 
> > > some cards 
> > > and they need to use/load it from a file? 
> > > 
> > > Thanks!
> > > 
> > 
> > I think is worth letting people know that the only devices supported by
> > Nvidia in the pci passthrough scenario are Quadro FX 3800, 4800 and
> > 5800 at the moment.
> > 
> 
> Yeah.. I guess you mean 'official support' here? What does that mean 
> practically? 
> FLR support? 
> 

It means that the retail Nvidia drivers have been tested in this use
case and probably contain some changes to make sure it works properly.

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