Index: sys/modules/Makefile
===================================================================
--- sys/modules/Makefile
+++ sys/modules/Makefile
@@ -766,6 +766,7 @@
 .if ${MACHINE_ARCH} == "powerpc64"
 _ipmi=		ipmi
 _nvram=		opal_nvram
+_virtio=	virtio
 .endif
 .if ${MACHINE_ARCH} == "powerpc64" || ${MACHINE_ARCH} == "powerpc"
 # Don't build powermac_nvram for powerpcspe, it's never supported.
Index: sys/powerpc/conf/GENERIC64
===================================================================
--- sys/powerpc/conf/GENERIC64
+++ sys/powerpc/conf/GENERIC64
@@ -256,3 +256,12 @@
 options 	EVDEV_SUPPORT		# evdev support in legacy drivers
 device		evdev			# input event device support
 device		uinput			# install /dev/uinput cdev
+
+# VirtIO support
+device          virtio                  # Generic VirtIO bus (required)
+device          virtio_pci              # VirtIO PCI device
+device          vtnet                   # VirtIO Ethernet device
+device          virtio_blk              # VirtIO Block device
+device          virtio_scsi             # VirtIO SCSI device
+device          virtio_balloon          # VirtIO Memory Balloon device
+