鲲鹏架构安装openstack Q版本，计算节点virt_type配置为qemu提示CPU不支持主机传递。

计算节点nova服务报错，virt_type配置为qemu提示CPU不支持主机传递

: libvirtError: unsupported configuration: CPU mode 'host-passthrough' for aarch64 qemu domain on aarch64 host is not supported by hypervisor
2020-07-23 05:04:40.095 27687 ERROR nova.virt.libvirt.driver [req-1de2f511-9aa9-4cab-82bb-91e4f79c2fd5 36f76aaaee804f95878dcce4ff134f4f 82fc4d5bb8fc4c5aab5feef3e6d67fa9 - 3202a33cfd45412083d2bff97867f8e7 3202a33cfd45412083d2bff97867f8e7] [instance: 3207095d-36da-44ca-9c89-352cba5b8d36] Failed to start libvirt guest: libvirtError: unsupported configuration: CPU mode 'host-passthrough' for aarch64 qemu domain on aarch64 host is not supported by hypervisor
2020-07-23 05:04:40.097 27687 INFO os_vif [req-1de2f511-9aa9-4cab-82bb-91e4f79c2fd5 36f76aaaee804f95878dcce4ff134f4f 82fc4d5bb8fc4c5aab5feef3e6d67fa9 - 3202a33cfd45412083d2bff97867f8e7 3202a33cfd45412083d2bff97867f8e7] Successfully unplugged vif VIFBridge(active=False,address=fa:16:3e:3e:90:2b,bridge_name='brq74c9b052-a5',has_traffic_filtering=True,id=8c304a6a-6a0b-4ada-8b2d-89535d5b251f,network=Network(74c9b052-a5cd-4ebd-9067-f81fdfd2d8e3),plugin='linux_bridge',port_profile=<?>,preserve_on_delete=False,vif_name='tap8c304a6a-6a')
2020-07-23 05:04:40.105 27687 INFO nova.virt.libvirt.driver [req-1de2f511-9aa9-4cab-82bb-91e4f79c2fd5 36f76aaaee804f95878dcce4ff134f4f 82fc4d5bb8fc4c5aab5feef3e6d67fa9 - 3202a33cfd45412083d2bff97867f8e7 3202a33cfd45412083d2bff97867f8e7] [instance: 3207095d-36da-44ca-9c89-352cba5b8d36] Deleting instance files /var/lib/nova/instances/3207095d-36da-44ca-9c89-352cba5b8d36_del
2020-07-23 05:04:40.106 27687 INFO nova.virt.libvirt.driver [req-1de2f511-9aa9-4cab-82bb-91e4f79c2fd5 36f76aaaee804f95878dcce4ff134f4f 82fc4d5bb8fc4c5aab5feef3e6d67fa9 - 3202a33cfd45412083d2bff97867f8e7 3202a33cfd45412083d2bff97867f8e7] [instance: 3207095d-36da-44ca-9c89-352cba5b8d36] Deletion of /var/lib/nova/instances/3207095d-36da-44ca-9c89-352cba5b8d36_del complete
2020-07-23 05:04:40.208 27687 ERROR nova.compute.manager [req-1de2f511-9aa9-4cab-82bb-91e4f79c2fd5 36f76aaaee804f95878dcce4ff134f4f 82fc4d5bb8fc4c5aab5feef3e6d67fa9 - 3202a33cfd45412083d2bff97867f8e7 3202a33cfd45412083d2bff97867f8e7] [instance: 3207095d-36da-44ca-9c89-352cba5b8d36] Instance failed to spawn: libvirtError: unsupported configuration: CPU mode 'host-passthrough' for aarch64 qemu domain on aarch64 host is not supported by hypervisor

修改计算节点nova配置，virt_type改为使用kvm

vi /etc/nova/nova.conf
[libvirt]
virt_type = kvm

重启openstack-nova-compute服务

systemctl restart openstack-nova-compute