[libvirt-users] Why Guest does not retain Host CPU flags

[Jiri Denemark]

On Fri, Feb 17, 2017 at 11:23:54 +0530, akhilesh rawat wrote:
> ok thanks , but then can we know which all list of feature are supported by
> QEMU/KVM release.
> http://www.linux-kvm.org/page/KVM_Features

This page is not really about CPU features. It's not so easy to tell
whether a given CPU feature will be available to a guest or not as it
depends on a lot of things: QEMU and KVM version, machine type, hardware
settings, and even a specific revision of a given CPU model installed in
your host. Probably the simplest way to see the features is to check
them in a guest OS.

If everything goes well you should be able to get similar info from
libvirt via "virsh domcapabilities" command soon. Hopefully with QEMU
2.9.0 and libvirt 3.1.0.

Jirka