19.3.

virsh edit Intel-L1

# virsh edit Intel-L1

<cpu mode='host-passthrough'/>

<cpu mode='host-passthrough'/>

<cpu mode ='custom' match ='exact' check='partial'>
  <model fallback='allow'>Haswell-noTSX</model>
  <feature policy='require' name='vmx'/>
  ...
</cpu>

<cpu mode ='custom' match ='exact' check='partial'>
  <model fallback='allow'>Haswell-noTSX</model>
  <feature policy='require' name='vmx'/>
  ...
</cpu>