CONFIG_TILE_GXIO is not available for thedefaultarchitecture x86.
Result is shown for architecture tile

CONFIG_TILE_GXIO (not configurable)

modulename: iorpc_globals.ko

configname: CONFIG_TILE_GXIO

Linux Kernel Configuration
└─>TILE_GXIO
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
/arch/tile/gxio/
depends
CONFIG_TILEGX