785 	unsigned long minsz, ddwsz;  in tce_iommu_ioctl()  local
827 		minsz = offsetofend(struct vfio_iommu_spapr_tce_info,  in tce_iommu_ioctl()
830 		if (copy_from_user(&info, (void __user *)arg, minsz))  in tce_iommu_ioctl()
833 		if (info.argsz < minsz)  in tce_iommu_ioctl()
853 			minsz = ddwsz;  in tce_iommu_ioctl()
855 		if (copy_to_user((void __user *)arg, &info, minsz))  in tce_iommu_ioctl()
869 		minsz = offsetofend(struct vfio_iommu_type1_dma_map, size);  in tce_iommu_ioctl()
871 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
874 		if (param.argsz < minsz)  in tce_iommu_ioctl()
935 		minsz = offsetofend(struct vfio_iommu_type1_dma_unmap,  in tce_iommu_ioctl()
938 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
941 		if (param.argsz < minsz)  in tce_iommu_ioctl()
977 		minsz = offsetofend(struct vfio_iommu_spapr_register_memory,  in tce_iommu_ioctl()
984 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
987 		if (param.argsz < minsz)  in tce_iommu_ioctl()
1010 		minsz = offsetofend(struct vfio_iommu_spapr_register_memory,  in tce_iommu_ioctl()
1013 		if (copy_from_user(&param, (void __user *)arg, minsz))  in tce_iommu_ioctl()
1016 		if (param.argsz < minsz)  in tce_iommu_ioctl()
1075 		minsz = offsetofend(struct vfio_iommu_spapr_tce_create,  in tce_iommu_ioctl()
1078 		if (copy_from_user(&create, (void __user *)arg, minsz))  in tce_iommu_ioctl()
1081 		if (create.argsz < minsz)  in tce_iommu_ioctl()
1098 		if (!ret && copy_to_user((void __user *)arg, &create, minsz))  in tce_iommu_ioctl()
1116 		minsz = offsetofend(struct vfio_iommu_spapr_tce_remove,  in tce_iommu_ioctl()
1119 		if (copy_from_user(&remove, (void __user *)arg, minsz))  in tce_iommu_ioctl()
1122 		if (remove.argsz < minsz)  in tce_iommu_ioctl()