CONFIG_IOMMU_HELPER (not configurable)

modulename: iommu-helper.ko

configname: CONFIG_IOMMU_HELPER

Linux Kernel Configuration
└─>Library routines
└─>IOMMU_HELPER
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
source code:
lib/iommu-helper.c