Index: /trunk/src/VBox/Devices/VirtIO/Virtio.h
===================================================================
--- /trunk/src/VBox/Devices/VirtIO/Virtio.h	(revision 64832)
+++ /trunk/src/VBox/Devices/VirtIO/Virtio.h	(revision 64833)
@@ -58,4 +58,7 @@
 
 #define VPCI_F_NOTIFY_ON_EMPTY              0x01000000
+#define VPCI_F_ANY_LAYOUT                   0x08000000
+#define VPCI_F_RING_INDIRECT_DESC           0x10000000
+#define VPCI_F_RING_EVENT_IDX               0x20000000
 #define VPCI_F_BAD_FEATURE                  0x40000000
 
@@ -63,4 +66,5 @@
 #define VRINGDESC_F_NEXT                    0x01
 #define VRINGDESC_F_WRITE                   0x02
+#define VRINGDESC_F_INDIRECT                0x04
 
 typedef struct VRingDesc