//0x18 bytes (sizeof)
struct _GIC_MSIFRAME_ENTRY
{
UCHAR Type; //0x0
UCHAR Length; //0x1
USHORT Reserved1; //0x2
ULONG Identifier; //0x4
ULONGLONG PhysicalAddress; //0x8
ULONG Flags; //0x10
USHORT SpiCount; //0x14
USHORT SpiBase; //0x16
};