Enable AMD IOMMU internals in DebugFS

modulename: debugfs.ko

configname: CONFIG_AMD_IOMMU_DEBUGFS

Linux Kernel Configuration
└─>Device Drivers
└─>IOMMU Hardware Support
└─>Enable AMD IOMMU internals in DebugFS
In linux kernel since version 4.2 (release Date: 2015-08-30)  
!!!WARNING!!! !!!WARNING!!! !!!WARNING!!! !!!WARNING!!!

DO NOT ENABLE THIS OPTION UNLESS YOU REALLY, -REALLY- KNOW WHAT YOU ARE DOING!!!
Exposes AMD IOMMU device internals in DebugFS.

This option is -NOT- intended for production environments, and should
not generally be enabled.

source code: