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AFAIR with Xen 4.3.0, Xen has to be patched with

ftp://ftp.enjellic.com/pub/xen/xen-4.2.0.ati-passthrough.patch

cd /path/to/your/xen-4.3.0/directory

wget ftp://ftp.enjellic.com/pub/xen/xen-4.2.0.ati-passthrough.patch -O - | patch -p1

Install xen (make & Co).

This patch below was sent to Xen mailing list a couple months ago. It should prevent you from getting error code 12.

Download the following script to manage domU.

ftp://ftp.enjellic.com/pub/xen/run-passthrough

Update it to your own needs.

When installing AMD driver avoid to install Catalyst Center -- to avoid blue screen.

I did it several time with my HD 7970 and it worked perfectly.

http://www.davidgis.fr/blog/index.php?2013/07/13/954-xen-430-stable-vga-passthrourh-for-ati
http://www.davidgis.fr/blog/index.php?2013/04/05/937-xen-43-unstable-vga-passthrough-hd-7970-windows-7-64-bits-with-more-than-3gb-for-ram

De : Toby Miller <tobycmiller@xxxxxxxxx>
À : xen-users@xxxxxxxxxxxxx; gordan@xxxxxxxxxx
Envoyé le : Mercredi 2 octobre 2013 14h58
Objet : Re: [Xen-users] VGA Passthrough of AMD FirePro W7000 to Windows 8: Not enough resources

>> gordan@xxxxxxxxxx wrote:
> On Sun, 29 Sep 2013 15:01:01 +0100, Toby Miller<tobycmiller@xxxxxxxxx>
> wrote:
>> >I'm using Xen 4.3, installed from source on Ubuntu 13.04. I've
>> >successfully installed a Windows 8 guest, and had Xen pass it an AMD
>> >FirePro W7000 GPU (technically 2 PCI devices - the second is for the
>> >sound), as well as the virtualised graphics adapter. Windows finds
>> >the
>> >card fine, and I've installed AMD's drivers. Device Manager says that
>> >the card cannot find enough resources (code 12). I've checked the IO,
>> >IRQ, and Memory details in DM, and there don't seem to be any
>> >clashes.
>> >
>> >I did try disabling the virtualised card from Windows, but it seemed
>> >to keep using it anyway, even after a restart. It didn't make any
>> >difference to the FirePro in any case.
>> >
>> >I'd be grateful for some help.
> I haven't tried Windows 8, but on XP64 disabling the Cirrus card in
> device manager fixed the problem for me with Nvidia card passthrough.
>
> You could try setting gfx_passthru=1, which should disable the
> Cirrus emulation alltogether. That may make Windows domU completely
> fail to boot, though.
>
> Did you do a clean Win8 install and reboot the host fully? Is the
> FirePro the primary GPU on the host? Or is it completely untouched
> in dom0 (no dom0 or BIOS output on it)?
>
> Gordan
Thanks for your reply. It turns out the problem was that I'd forgotten
to put device_model_version="qemu-xen-traditional", so I was using a
qemu that didn't support gfx_passthrough. The FirePro is not used in
dom0 at all. I'm using pciback to hide it.

I now have another problem though. The Ubuntu host crashes a lot when
the Windows 8 guest is running. Mostly it happens when I try to shut
down Windows - I think it might be a result of the FirePro card being
released -, but sometimes it happens randomly too. The screen completely
freezes, and no ssh or anything. I should mention that I'm not passing
through the audio pci device for the FirePro, although it is bound to
pciback so the host can't be using it either. If I try to pass that
through it never actually boots. I've had a lot of blue screens, and a
lot of host crashes. I'm passing through a USB device too (i.e. the PCI
USB device), and that works fine.

Googling doesn't seem to come up with much for host crashes. What can I
do to diagnose the problem? There's nothing in the syslog.

Thanks a lot!

Toby

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