<interface type='network'>
     <source network='default'/>
    </interface>
    <input type='tablet' bus='usb' />




 <memory>786432</memory>
 <currentMemory>786432</currentMemory>
  <memtune>
   <hard_limit>786432</hard_limit>
  </memtune>
 <vcpu>8</vcpu>
<cpu>
  <topology sockets='2' cores='2' threads='2'/>
 </cpu>