I've tested this on x86 (xenial ocata) - cpu-mode "none" works, as expected. Neither host-model nor host-passthrough work - the error how ever is not the same - in fact the xml to create the instance doesn't get passed through at all. It is a generic openstack instance creation error.
Error creating server: xenial-SERVERNAME
Error creating server
I've tested this on x86 (xenial ocata) - cpu-mode "none" works, as expected. Neither host-model nor host-passthrough work - the error how ever is not the same - in fact the xml to create the instance doesn't get passed through at all. It is a generic openstack instance creation error.
Error creating server: xenial-SERVERNAME
Error creating server