core-admin/templates/libvirt/devices/pci.xml

<hostdev type="pci" managed="yes">
    <source>
        <address
            bus="0x{{ device.bus }}"
            slot="0x{{ device.device }}"
            function="0x{{ device.function }}" />
    </source>
</hostdev>

{# vim : set ft=jinja ts=4 sts=4 sw=4 et : #}