CONFIG_VIRTIO_CONSOLE (not configurable)

modulename: virtio_console.ko

configname: CONFIG_VIRTIO_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>VIRTIO_CONSOLE
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
source code:

depends
 or CONFIG_VIRTIO or CONFIG_TTY or &

is depended by
CONFIG_LGUEST_GUEST