Comment 80 for bug 1787405

Did cosmic as well now.
First verified that with the non-proposed version it fails (on 1:2.12+dfsg-3ubuntu8.1 / 4.6.0-2ubuntu3)
=> fails as expected (can't even define the XML)

Then upgraded to 1:2.12+dfsg-3ubuntu8.2 and 4.6.0-2ubuntu3.1 from cosmic proposed.

With that qemu works as intended and gets the ap passed through.
But libvirt in 4.6 has gained the (unwelcome) smartness to add display=off which is useful for other mdevs but breaks vfio-ap usage.
That causes this:
error: internal error: qemu unexpectedly closed the monitor: 2018-12-06T07:48:27.407849Z qemu-system-s390x: -device vfio-ap,id=hostdev0,sysfsdev=/sys/bus/mdev/devices/24f952b3-03d1-4df2-9967-0d5f7d63d5f2,display=off: Property '.display' not found

This is still no regression (only the new feature is incomplete on cosmic).
We can either release 4.6.0-2ubuntu3.1 or wait for 4.6.0-2ubuntu3.2 which I start to prep now.
Yet I need to find the right fix first ...

Setting c-verified as well (for qemu and kernel to get their SRU queues flushed at least).

Summarizing:
- kernel verified B&C
- qemu verified B&C
- libvirt verified B
- libvirt will get a follow on fix for C to handle display
- Setting the libvirt task back to in progress