Comment 7 for bug 1922907

I tried

dpkg -l |grep libvirt
ii libvirt-clients 6.0.0-0ubuntu8.9~focalppa3 amd64 Programs for the libvirt library
ii libvirt-daemon 6.0.0-0ubuntu8.9~focalppa3 amd64 Virtualization daemon
ii libvirt-daemon-driver-qemu 6.0.0-0ubuntu8.9~focalppa3 amd64 Virtualization daemon QEMU connection driver
ii libvirt-daemon-driver-storage-rbd 6.0.0-0ubuntu8.9~focalppa3 amd64 Virtualization daemon RBD storage driver
ii libvirt-daemon-system 6.0.0-0ubuntu8.9~focalppa3 amd64 Libvirt daemon configuration files
ii libvirt-daemon-system-systemd 6.0.0-0ubuntu8.9~focalppa3 amd64 Libvirt daemon configuration files (systemd)
ii libvirt0:amd64 6.0.0-0ubuntu8.9~focalppa3 amd64 library for interfacing with different virtualization systems

But still has error:

virsh cpu-compare /tmp/old_host.xml
CPU described in /tmp/old_host.xml is incompatible with host CPU