Min version	XP	2003/XP64 SP1	2003/XP64 SP1	8
Max version	2003/XP64 SP2	8 Pre RTM	10 TH2
Architecture	x86	x64	x86	x64
x86 offset offset:bitpos	Field Name				x64 offset offset:bitpos
0x0000	int16_t Type				0x0000
0x0002	uint16_t Size				0x0002
				uint16_t AllocationProcessorNumber	0x0004
				uint16_t Reserved	0x0006
0x0004	struct _MDL * MdlAddress				0x0008
0x0008	unsigned long Flags				0x0010
0x000C	union __unnamed AssociatedIrp	union <unnamed-tag> AssociatedIrp			0x0018
0x0010	struct _LIST_ENTRY ThreadListEntry				0x0020
0x0018	struct _IO_STATUS_BLOCK IoStatus				0x0030
0x0020	char RequestorMode				0x0040
0x0021	uint8_t PendingReturned				0x0041
0x0022	char StackCount				0x0042
0x0023	char CurrentLocation				0x0043
0x0024	uint8_t Cancel				0x0044
0x0025	uint8_t CancelIrql				0x0045
0x0026	char ApcEnvironment				0x0046
0x0027	uint8_t AllocationFlags				0x0047
0x0028	struct _IO_STATUS_BLOCK * UserIosb				0x0048
0x002C	struct _KEVENT * UserEvent				0x0050
0x0030	union __unnamed Overlay	union <unnamed-tag> Overlay			0x0058
0x0038	function * CancelRoutine				0x0068
0x003C	void * UserBuffer				0x0070
0x0040	union __unnamed Tail	union <unnamed-tag> Tail			0x0078