pass-though Intel gpu int o a vm

[Erik Skultety]

On Sat, Aug 08, 2020 at 06:44:26PM +0200, daggs wrote:
> Greetings,
>
> I have a server that run a vm with several nic pcie cards as pass-though.
> the board has an intel gpu and the hdmi output is not used.
> I thought of booting up another vm and pass the gpu into it.
> I found several discussions on the subject stating that it isn't possible but all of them are several years old.
> I wonder if that has changed? is there a way to pt the vga to a vm?
>
> Thanks,
>
> Dagg.
>

Hi,
libvirt has supported host device assignment for quite some time, so from that
perspective, you can follow [1] and see if your card works in the VM. The GPU
assignment involves the userspace VFIO driver and there are a few factors in
play which may render the assignment either not work at all or work with
limitations. In any case, this question would be better asked at
vfio-users at redhat.com mailing list should you experience any issues with [1].

Regards,
Erik

[1] https://libvirt.org/formatdomain.html#host-device-assignment

PS: You can even try assigning the GPU from within virt-manager which produces
the right XML bits for libvirt. I've never tried assigning an integrated Intel
GPU on my laptop (for obvious reasons), so I can't give you the kind of answer
guaranteeing this would work 100%.