<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) --> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0001' bus='0x01' slot='0x00' function='0x0'/> </source> </hostdev> <!-- This hostdev can't share the PHB that was just created, because its isolation group is 2 (IOMMU group 1) --> <interface type='hostdev' managed='yes'> <source> <address type='pci' domain='0x0005' bus='0x90' slot='0x01' function='0x0'/> </source> <mac address='52:54:00:6d:90:02'/> </interface> <!-- This hostdev will be placed on the first PHB, since its isolation group is 1 (IOMMU group 0) just like the first hostdev --> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0001' bus='0x01' slot='0x00' function='0x1'/> </source> </hostdev> <controller type='usb' model='none'/> <memballoon model='none'/> </devices> </domain>