[Xen-users] Re: trouble with onboard gfx in dom0

[Dima Tisnek <dimaqq@xxxxxxxxx>]

And I have to take back being able to passthrough pcie gfx.
I gets passed but guest drivers keep resetting the card on any
significant memory traffic -- a second of gaming or a minute of moving
2d windows around on the screen.

Anyhow, onboard gfx dom0 issue persists :-(

On 4 October 2011 11:03, Dima Tisnek <dimaqq@xxxxxxxxx> wrote:
> Running Xorg in dom0 (xen 4.1.1, linux both jeremy's git and vanilla
> 3.0.4) I get this error:
>
> [ Â 719.850] (II) VESA(0): initializing int10
> [ Â 719.851] (WW) System lacks support for changing MTRRs
> [ Â 719.851] (EE) VESA(0): V_BIOS address 0x30000 out of range
>
> Onboard gfx is 00:02.0 0300: 8086:0102 (rev 09), intel's gma hd 2000
> integrated in the processor.
> Xorg runs fine if same kernel is booted natively, without xen.
>
> I understand that dom0 runs in PV mode, thus xorg drivers may need to
> be patched, right?
>
> While on the subject, is it so that dom0 is always PV and cannot be HVM?
>
> Is there a way to gfx_passthrough or pci_passthrough a device from
> xen/hw to dom0?
>
> Or, should I instead have minimal dom0 and separate linux domU to
> passthrough noboard video to?
>
> Setup, gotten for this very purpose is sb with vt-d (dq67sw, i7-2600,
> additional pcie gfx card).
> Both gfx are enabled in bios.
> I was able to passthrough pcie gfx to hvm guest if dom0 is jeremy's
> git, but not vanilla 3.0.4.
> After considerable trouble also pass through a single onboard pci
> device, usb controller, to same hvm guest, even though it's not
> supposed to be possible according to xen wiki as almost all onboard
> pci devices are on the same bus.
> I was unable to passthrough usb 3.0 controller, onboard but own pcie
> device behind pci bridge in pci topology. HVM notices the controller,
> installs drivers, but cannot start the device with code 10. ð
>
> Thanks,
> Dima
>

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