CONFIG_IOMMU_IO_PGTABLE (not configurable)

modulename: io-pgtable.ko

configname: CONFIG_IOMMU_IO_PGTABLE

Linux Kernel Configuration
└─>Device Drivers
└─>IOMMU Hardware Support
└─>Generic IOMMU Pagetable Support
└─>IOMMU_IO_PGTABLE
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/iommu/io-pgtable.c