Creating a virtio-net VF returns an error from the command line:
# echo 3 > /sys/bus/pci/drivers/virtio-pci/0000:41:00.2/sriov_numvfs
write error: Function not implemented
The host-side dmesg shows the following:
[ 301.204661] virtio-pci 0000:41:00.2: Driver doesn't support SRIOV configuration via sysfs
Virtio SR-IOV is only supported starting from the following kernel version:
| Release | |
| Upstream | 4.18 with commit cfecc2918d2b3 |
| Ubuntu | Ubuntu-hwe-4.18.0-9.10_18.04.1 |
| CentOS | 3.10.0-957.el7 / 7.6.1810 |