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//0x4 bytes (sizeof)
enum _IOMMU_DEVICE_CREATION_CONFIGURATION_TYPE
{
    IommuDeviceCreationConfigTypeNone = 0,
    IommuDeviceCreationConfigTypeAcpi = 1,
    IommuDeviceCreationConfigTypeDeviceId = 2,
    IommuDeviceCreationConfigTypePasid = 3,
    IommuDeviceCreationConfigTypeMax = 4
};