Re: [Xen-users] [Xen-devel] VGA passthough still not working

[<djmagee@xxxxxxxxxxxx>]

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Konrad Rzeszutek Wilk
> Sent: Monday, January 23, 2012 8:50 PM
> To: Tobias Geiger
> Cc: Sandi Romih; chris; xen-devel@xxxxxxxxxxxxxxxxxxx; xen-
> users@xxxxxxxxxxxxxxxxxxx; Ian Campbell
> Subject: Re: [Xen-devel] [Xen-users] VGA passthough still not working
> 
> On Mon, Jan 23, 2012 at 02:17:42PM +0100, Tobias Geiger wrote:
> > Hello!
> >
> > The thing is, you either dont need patches at all to get it to work
> (ATI), or
> > you need to customize patches reflecting your individual setup
> (NVIDIA);
> >
> > To be more specific:
> > I can confirm that passing through a ATI Card works "out of the box"
> - either
> > to Windows 7 or Windows XP;
> > In the past i had a setup running with a NVIDIA card, it only worked
> with
> > special patches (the ones David packed together and offers as
> tarball) and - as
> > far as i can tell - are not generaly working for all NVIDIA Cards,
> i.e. you
> > have to adjust Memory-Adresses in the acpi.dst (iirc). - and even
> then the
> > passed through Card worked only with Windows XP - NOT with Windows
7;
> >
> > Both setup have the "flaw" that they only work once - meaning you
> can't reboot
> > your DomU , cause after the reboot the passed-through Card doesnt
> have correct
> > 3D-Accelleration any more (was/is the case with NVIDIA and ATI,
> Windows XP and
> > Windows7 )
> 
> For me it was with ATI with Windows7. Hadn't tried other OSes.
> 
> Anybody had luck with passing the card more than once to a guest? With
> any random set of patches?

Yes, I've had a machine running for a couple of weeks, hosting a Windows
7 domu with a passed-through Radeon 4770.  I've rebooted the virtual
machine multiple times, as well as gone through a couple of xl
destroy/create cycles.

I only pass it through as a secondary card, as I have the IGD as the
primary on the host.  The machine is a DQ67SW with a Core i5.  This is
running xen-unstable (c/s 24465) on a 3.2.1 dom0, with no extra patches.

I haven't, however, had any luck passing through the IGD to anything
other than a Windows XP, and that includes running the latest qemu-xen
with Jean's patches (opregion, host bridge config space mapping).  I've
been intending to start a separate thread for that...


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