CONFIG_INTEL_GTT (not configurable)

modulename: intel-gtt.ko

configname: CONFIG_INTEL_GTT

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>PCI support
└─>INTEL_GTT
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/char/agp/intel-gtt.c