> libvirt's "host-passthrough" uses "-cpu host', and it "-cpu host" > enables every feature that can be enabled on the host. >From my test results, I found that even when use host-passthrough mode, VM's cpu features are very different from host, this doesn't match what host-passthrough mode's explanation. libvirt's option exlanation: With this mode, the CPU visible to the guest should be exactly the same as the host CPU even in the aspects that libvirt does not understand. > If the behavior of "-cpu host" doesn't match libvirt expectations, we > need to clarify what are the requirements, and maybe have a "try to be > close to host CPU mode" as opposed to the current "enable everything > that can be enabled" mode. Does the results above indicates what you mean to do? or the current way doesn't work as we expect. Thanks! -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list