The request here is for an option to change existing VMs to use virtio. This is useful in a number of cases. One non-Linux-guest example would be if you want install the paravirtual network drives on Windows. You need to tell KVM to use virtio, but that wouldn't be a sane default for Windows because it doesn't ship those drivers out of the box.
The request here is for an option to change existing VMs to use virtio. This is useful in a number of cases. One non-Linux-guest example would be if you want install the paravirtual network drives on Windows. You need to tell KVM to use virtio, but that wouldn't be a sane default for Windows because it doesn't ship those drivers out of the box.