Re: pass-though Intel gpu int o a vm

Sent: Tuesday, August 11, 2020 at 10:11 AM From: "Erik Skultety" <eskultet(a)redhat.com&gt; To: "daggs" <daggs(a)gmx.com&gt; Cc: libvirt-users(a)redhat.com Subject: Re: pass-though Intel gpu int o a vm 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(a)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%.