On Tue, Jul 30, 2019 at 08:06:01PM +0800, 王金磊 wrote: "host-model" is a CPU type that will be expanded to a named CPU model and feature list that matches the host's CPU, as reported by the 'virsh domcapabilities' command. Libvirt actually stores two XML documents for most guests. There is the persistent config which is the master configuration that exists even when the guest is stopped. Then their is the live config which only exists whde the guest is running. When you ran 'virsh dumpxml' on a running guest, it will show you the live config, and that has the CPU model expanded to a named CPU + features, hence you see it reported as 'custom'. If you run 'virsh dumpxml --inactive' you'll see the persistent config and that should still report 'host-model'. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|