Virtual KMS (EXPERIMENTAL)

modulename: vkms.ko

configname: CONFIG_DRM_VKMS

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Virtual KMS (EXPERIMENTAL)
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Virtual Kernel Mode-Setting (VKMS) is used for testing or for
running GPU in a headless machines. Choose this option to get
a VKMS.

If M is selected the module will be called vkms.

source code:
drivers/gpu/drm//vkms/