IOMMU Userspace API

modulename: iommufd.ko

configname: CONFIG_IOMMUFD

Linux Kernel Configuration
└─>Device Drivers
└─>IOMMU Hardware Support
└─>IOMMU Userspace API
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
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.

source code: