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//0x28 bytes (sizeof)
struct _EXT_IOMMU_DEVICE
{
    VOID* Context;                                                          //0x0
    struct _EXT_IOMMU* Iommu;                                               //0x8
    struct _EXT_IOMMU_DOMAIN* Domain;                                       //0x10
    ULONGLONG AssociatedDomainId;                                           //0x18
    USHORT FirmwareDomainId;                                                //0x20
    UCHAR FaultReportingEnabled;                                            //0x22
};