CONFIG_VFIO_MDEV (not configurable)

modulename: mdev.ko

configname: CONFIG_VFIO_MDEV

Linux Kernel Configuration
└─>Device Drivers
└─>VFIO Non-Privileged userspace driver framework
└─>VFIO_MDEV
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/vfio/mdev/
depends
CONFIG_VFIO