vagrant-libvirt/spec/unit/templates/domain_cpu_mode_passthrough.xml

<domain type='' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name></name>
  <title></title>
  <description></description>
  <uuid></uuid>
  <memory></memory>
  <vcpu>1</vcpu>
  <cpu mode='host-passthrough'>
    <feature policy='optional' name='vmx'/>
    <feature policy='optional' name='svm'/>
    <topology sockets='1' cores='2' threads='1'/>
  </cpu>
  <os>
    <type>hvm</type>
    <bootmenu enable='no'/>
    <kernel></kernel>
    <initrd></initrd>
    <cmdline></cmdline>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'>
  </clock>
  <devices>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target port='0'/>
    </console>
    <input type='mouse' bus='ps2'>
    </input>
    <graphics type='vnc' port='-1' autoport='yes' websocket='-1' listen='127.0.0.1' keymap='en-us'/>
    <video>
      <model type='cirrus' vram='16384' heads='1'/>
    </video>
  </devices>
</domain>