[libvirt-users] trying to get "pages" output in virsh capabilities

When running "virsh capabilities" one of my systems shows a couple entries for "pages" under host/cpu. (One for 4KB, one for 2MB.) On my other system I'm missing the "pages" entries. Is there something that I need to configure, or is this a libvirt version issue, or what? The system with the "pages" entries is running 1.2.9, while the system without them is running 1.2.2. Thanks, Chris