The fixed "usr.lib.libvirt.virt-aa-helper" from Jamie and a "apparmor_parser -r /etc/apparmor.d/usr.lib.libvirt.virt-aa-helper" helps and the guest is starting again.
The newest kernel, apparmor and libs fixed my problem with 100% load and very slow guests.
The fixed "usr.lib. libvirt. virt-aa- helper" from Jamie and a "apparmor_parser -r /etc/apparmor. d/usr.lib. libvirt. virt-aa- helper" helps and the guest is starting again.
The newest kernel, apparmor and libs fixed my problem with 100% load and very slow guests.