[libvirt-users] Which objects does dynamic_ownership apply to?

Hi, I'm playing with dynamic ownership and not all objects have their owners changed. Is dynamic_ownership and its scope documented somewhere, besides the comment in qemu.conf? And what kinds of objects are handled by dynamic ownership? While some objects seem to be handled, other objects are apparently unaffected. For instance /dev/hwrng or a USB host device keep their root owners and are inaccessible to the VM. Is that expected or do I have anything wrong? Thanks, Milan