pci-root-address.xml

<domain type='qemu'>
  <name>fdr-br</name>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='static' cpuset='0-1'>2</vcpu>
  <os>
    <type arch='x86_64' machine='pc-1.2'>hvm</type>
    <boot dev='hd'/>
  </os>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <controller type='pci' index='0' model='pci-root'>
      <address type='pci' domain='0' bus='0' slot='0' function='0'/>
    </controller>
  </devices>
</domain>