[Libvir] about domctl

Hi, Dan I have a question about domctl(Xen hypervisor call). It seems not working on Fedora7(i386). But sysctl works fine. for example "virsh setmem" does not set memory. "virsh vcpuinfo " shows following message on dom0 (strange) VCPU: 0 CPU: 0 State: blocked CPU time: 0.0s CPU Affinity: - Would you investigate this issue? I look around the code but it should be works. Thanks Atsushi SAKAI