Min version	2003/XP64 SP1
Max version	7 SP1
x64 offset offset:bitpos	Field Name
0x0000	union <unnamed-tag> u1
0x0008	struct _MMADDRESS_NODE * LeftChild
0x0010	struct _MMADDRESS_NODE * RightChild
0x0018	uint64_t StartingVpn
0x0020	uint64_t EndingVpn