Index: /trunk/src/VBox/VMM/include/APICInternal.h
===================================================================
--- /trunk/src/VBox/VMM/include/APICInternal.h	(revision 60471)
+++ /trunk/src/VBox/VMM/include/APICInternal.h	(revision 60472)
@@ -194,4 +194,6 @@
 /** DFR - Valid bits. */
 #define XAPIC_DFR                            UINT32_C(0xf0000000)
+/** DFR - Reserved bits that must always remain set. */
+#define XAPIC_DFR_RSVD_MB1                   UINT32_C(0x0fffffff)
 /** DFR - The model. */
 #define XAPIC_DFR_MODEL                      UINT32_C(0xf)