cpu-nofallback.xml

<domain type='kvm'>
  <name>QEMUGuest1</name>
  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
  <memory unit='KiB'>219100</memory>
  <currentMemory unit='KiB'>219100</currentMemory>
  <vcpu placement='static'>6</vcpu>
  <os>
    <type arch='x86_64' machine='pc'>hvm</type>
    <boot dev='network'/>
  </os>
  <cpu match='exact'>
    <model fallback='forbid'>Westmere</model>
    <feature policy='disable' name='sse4.1'/>
    <feature policy='disable' name='sse4.2'/>
    <feature policy='disable' name='popcnt'/>
    <feature policy='disable' name='aes'/>
  </cpu>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
      <emulator>/usr/bin/qemu-system-x86_64</emulator>
  </devices>
</domain>