# SPDX-License-Identifier: GPL-2.0-only config IOMMUFD tristate "IOMMU Userspace API" select INTERVAL_TREE select INTERVAL_TREE_SPAN_ITER select IOMMU_API default n help Provides /dev/iommu, the user API to control the IOMMU subsystem as it relates to managing IO page tables that point at user space memory. If you don't know what to do here, say N.