Index: sys/dev/virtio/virtio.h
===================================================================
--- sys/dev/virtio/virtio.h
+++ sys/dev/virtio/virtio.h
@@ -33,6 +33,7 @@
 
 #include <dev/virtio/virtio_ids.h>
 #include <dev/virtio/virtio_config.h>
+#include <sys/endian.h>
 
 struct vq_alloc_info;
 
@@ -84,14 +85,15 @@
 
 /*
  * Read/write a variable amount from the device specific (ie, network)
- * configuration region. This region is encoded in the same endian as
- * the guest.
+ * configuration region. According to virtio-1.0 section 2.4, this
+ * region uses little-endian format for multi-byte fields
  */
 void	 virtio_read_device_config(device_t dev, bus_size_t offset,
 	     void *dst, int length);
 void	 virtio_write_device_config(device_t dev, bus_size_t offset,
 	     void *src, int length);
 
+
 /* Inlined device specific read/write functions for common lengths. */
 #define VIRTIO_RDWR_DEVICE_CONFIG(size, type)				\
 static inline type							\
Index: sys/dev/virtio/virtio.c
===================================================================
--- sys/dev/virtio/virtio.c
+++ sys/dev/virtio/virtio.c
@@ -250,17 +250,65 @@
 void
 virtio_read_device_config(device_t dev, bus_size_t offset, void *dst, int len)
 {
-
 	VIRTIO_BUS_READ_DEVICE_CONFIG(device_get_parent(dev),
 	    offset, dst, len);
+#if _BYTE_ORDER != _LITTLE_ENDIAN
+	switch(len){
+		case 1:
+			break;
+		case 2: {
+			uint16_t *val = dst;
+			*val = le16toh(*val);
+			}
+			break;
+		case 4: {
+			uint32_t *val = dst;
+			*val = le32toh(*val);
+			}
+			break;
+		case 8: {
+			uint64_t *val = dst;
+			*val = le64toh(*val);
+			}
+		default:
+			device_printf(dev, "WARNING: unhandled len %d. \
+					Byte ordering may be incorrect.", len);
+	}
+#endif
 }
 
 void
 virtio_write_device_config(device_t dev, bus_size_t offset, void *dst, int len)
 {
-
+#if _BYTE_ORDER != _LITTLE_ENDIAN
+	switch(len){
+	case 1:
+		break;
+	case 2: {
+		uint16_t val = htole16(*(uint16_t*)dst);
+		VIRTIO_BUS_WRITE_DEVICE_CONFIG(device_get_parent(dev),
+					offset, &val, len);
+		}
+		return;
+	case 4: {
+		uint32_t val = htole32(*(uint32_t*)dst);
+		VIRTIO_BUS_WRITE_DEVICE_CONFIG(device_get_parent(dev),
+				offset, &val, len);
+		}
+		return;
+	case 8: {
+		uint64_t val = htole64(*(uint64_t*)dst);
+		VIRTIO_BUS_WRITE_DEVICE_CONFIG(device_get_parent(dev),
+				offset, &val, len);
+		}
+		return;
+	default:
+		device_printf(dev, "WARNING: unhandled len %d. \
+				Byte ordering may be incorrect.", len);
+	}
+#endif
 	VIRTIO_BUS_WRITE_DEVICE_CONFIG(device_get_parent(dev),
-	    offset, dst, len);
+			offset, dst, len);
 }
 
 static int
Index: sys/powerpc/conf/GENERIC64
===================================================================
--- sys/powerpc/conf/GENERIC64
+++ sys/powerpc/conf/GENERIC64
@@ -252,3 +252,12 @@
 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
+