[libvirt-users] Resource control is not supported on this host

[Allence]

Libvirt release version V4.1.0
It add a element is cachetune
After we add this, We can use host-cpu-cache
But when i add it, my host get a error message:
"Resource control is not supported on this host"
Why? 
Following is my environment:
kernel :        4.1.5,
libvirt  :        4.1.0 
qemu :        2.9
host   :        lfs-7.0


my add cachetune in xml:
    <cachetune vcpus='0-3'>
      <cache id='1' level='3' type='data' size='3' unit='MiB'/>
    </cachetune>
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