[libvirt-users] virDomainSetSchedulerParameters() does not support KVM?

Hi, I have one RHEL 5.5 Xen box and one RHEL 5.5 KVM box. In the Xen box, the following command works well: $ virsh schedinfo RHELu3T Scheduler : credit weight : 256 cap : 0 But in KVM box, it can not work: $ virsh schedinfo RHEL5u3 Scheduler : Unknown error: this function is not supported by the hypervisor: virDomainGetSchedulerType Is it because that the libvirt APIs virDomainGetSchedulerParameters() and virDomainSetSchedulerParameters() does not support KVM? Is there any plan for libvirt to support that? Or any equivalent in libvirt can be used to do the same thing for KVM？ Thanks! Qian