Comment 6 for bug 1852432

Verified on disco with the following test case:

$ uname -r
5.0.0-38-generic
$ echo 64 | sudo tee /sys/class/net/ens1f0/device/sriov_numvfs && virsh attach-interface iov hostdev 0000:08:02.6 --managed --live
64
Interface attached successfully