[libvirt-users] How to set cpuset.cpus dynamically?

Hi all, I have been trying to run a VM on some particular cpu cores. Now the thing is I can set cpuset with virt-install and that will reflect in VM's XML and it will define the affinity. But what about cpuset.cpus? That is inherited directly from the parent. Is there any way to set it when launching the VM? Again, if I have given cpuset during virt-install, why doesn't cpuset.cpus reflect the value instead of inheriting it from parent? Thanks.   ~Peeyush Gupta