[vfio-users] BSOD when installing drivers for R9 290

[Stewart Adam]

On 2016-01-17 1:27 PM, Eric Griffith wrote:
> On Jan 17, 2016 13:15, "Stewart Adam" <maillist at diffingo.com
> <mailto:maillist at diffingo.com>> wrote:
>  >
>  > On 2016-01-07 11:30 AM, Eric Griffith wrote:
>  >>
>  >> My problem is.. The Win7 (and Win8.1) guests are perfectly fine and stable
>  >> until I try to install the amd crimson drivers. Then Windows BSODs, yelling
>  >> about an unhandled exception. If I unpack the install and install things
>  >> piecemeal, then I can install the HDMI audio driver, and everything else
>  >> okay...except for the display driver. Installing the display driver causes
>  >> the BSOD.
>  >
>  > How are you booting the guest (e.g. manually executing QEMU, or manually
> created libvirt XML or virt-manager+libvirt)?
>  >
>
> Virt-manager+libvirt
>
>  > I had a very similar symptom on my guest, in the end it was the guest's
> machine flag "vmport=off" that virt-manager had added that resulted in the
> hang/BSOD upon installation of the driver.
>
> I tried removing the vmport=off flag but still BSOD'ed :(
>
> > After attempting a driver install, does the guest boot correctly but hang
> when attempting to show the login screen (i.e. when the 3D driver initializes)?
>
> Sometimes yes, other times itd just do the boot as if I had never tried to
> install the driver.

Sounds like the same issue I was experiencing... Have you also added a 
ioh3420 device edited your configuration so that the GPU is attached to it 
instead the default PCI/PCIE buses? If you're not sure, please attach the 
output of "virsh dumpxml your-vm-name".

Stewart