716 	unsigned long minsz, ddwsz;  in tce_iommu_ioctl()  local
748 		minsz = offsetofend(struct vfio_iommu_spapr_tce_info,  in tce_iommu_ioctl()
751 		if (copy_from_user(&info, (void __user *)arg, minsz))  in tce_iommu_ioctl()
754 		if (info.argsz < minsz)  in tce_iommu_ioctl()
774 			minsz = ddwsz;  in tce_iommu_ioctl()
776 		if (copy_to_user((void __user *)arg, &info, minsz))  in tce_iommu_ioctl()
790 		minsz = offsetofend(struct vfio_iommu_type1_dma_map, size);  in tce_iommu_ioctl()
792 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
795 		if (param.argsz < minsz)  in tce_iommu_ioctl()
852 		minsz = offsetofend(struct vfio_iommu_type1_dma_unmap,  in tce_iommu_ioctl()
855 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
858 		if (param.argsz < minsz)  in tce_iommu_ioctl()
890 		minsz = offsetofend(struct vfio_iommu_spapr_register_memory,  in tce_iommu_ioctl()
893 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
896 		if (param.argsz < minsz)  in tce_iommu_ioctl()
916 		minsz = offsetofend(struct vfio_iommu_spapr_register_memory,  in tce_iommu_ioctl()
919 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
922 		if (param.argsz < minsz)  in tce_iommu_ioctl()
977 		minsz = offsetofend(struct vfio_iommu_spapr_tce_create,  in tce_iommu_ioctl()
980 		if (copy_from_user(&create, (void __user *)arg, minsz))  in tce_iommu_ioctl()
983 		if (create.argsz < minsz)  in tce_iommu_ioctl()
997 		if (!ret && copy_to_user((void __user *)arg, &create, minsz))  in tce_iommu_ioctl()
1011 		minsz = offsetofend(struct vfio_iommu_spapr_tce_remove,  in tce_iommu_ioctl()
1014 		if (copy_from_user(&remove, (void __user *)arg, minsz))  in tce_iommu_ioctl()
1017 		if (remove.argsz < minsz)  in tce_iommu_ioctl()