Metadatacopystruct _DMA_IOMMU_INTERFACE_EX { unsigned __int64 Size;/* 0x0 8 */ unsigned long Version;/* 0x8 4 */ /* 4 bytes padding */ union { struct _DMA_IOMMU_INTERFACE_V1 V1;/* 0x10 104 */ struct _DMA_IOMMU_INTERFACE_V2 V2;/* 0x10 176 */ struct _DMA_IOMMU_INTERFACE_V3 V3;/* 0x10 216 */ struct _DMA_IOMMU_INTERFACE_V4 V4;/* 0x10 224 */ };/* 0x10 224 */};