//0x38 bytes (sizeof)
struct _IOMMU_RESERVED_DEVICE
{
struct _EXT_IOMMU_DEVICE_ID* DeviceId; //0x0
VOID* PageTable; //0x8
union _LARGE_INTEGER PageTablePhysical; //0x10
ULONG RegionCount; //0x18
struct _EXT_IOMMU_RESERVED_MEMORY_REGION Regions[1]; //0x20
};