kvm tools: Introduce KVM_VIRTIO_MMIO_AREA

This area is used for virtio-mmio.

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

x86/include/kvm/kvm-arch.h

@@ -21,6 +21,7 @@
  * from.  Note that this is a PCI bus address (though same on x86).
  */
 #define KVM_PCI_MMIO_AREA	(KVM_MMIO_START + 0x1000000)
+#define KVM_VIRTIO_MMIO_AREA	(KVM_MMIO_START + 0x2000000)
 
 struct kvm {
 	int			sys_fd;		/* For system ioctls(), i.e. /dev/kvm */