<domain type='qemu'> <name>guest</name> <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid> <memory unit='KiB'>524288</memory> <vcpu placement='static'>1</vcpu> <os> <type arch='ppc64' machine='pseries'>hvm</type> </os> <devices> <emulator>/usr/bin/qemu-system-ppc64</emulator> <!-- This hostdev will cause a new PHB to be created because its isolation group is 1 (IOMMU group 0). It will be PHB 2 due to the address --> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0001' bus='0x01' slot='0x00' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/> </hostdev> <!-- This hostdev will be placed on the same PHB, since its isolation group is also 1 (IOMMU group 0) --> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0001' bus='0x01' slot='0x00' function='0x1'/> </source> </hostdev> <controller type='usb' model='none'/> <memballoon model='none'/> </devices> </domain>