Do you mean virtio-vga / virtio-gpu?
virtio-vga. To be specific (libvirt):
<video>
<model type='virtio' heads='1' primary='yes'>
<acceleration accel3d='no'/>
</model>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x02' function='0x0'/>
</video>
which results in:
-device virtio-vga,id=video0,virgl=off,max_outputs=1,bus=pci.0,addr=0x2
This works perfectly with my Fedora 32 and Arch guests and the change is really worth it.