Juno has added support in nova/neutron for SR-IOV networking.(nic type etc) Isn't there a similar requirement for PCI passthrough devices too( non SR-IOV)? Can the 'direct' nic type be used for this?

Has anyone really tried this out? i.e. using the direct or macvtap vnic type for PCI passthrough? Do we still need the sriovnicswitch mechanism driver in non SR-IOV pci passthrough?