CONFIG_ARM_HEAVY_MB is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_ARM_HEAVY_MB (not configurable)

configname: CONFIG_ARM_HEAVY_MB

Linux Kernel Configuration
└─>ARM_HEAVY_MB
In linux kernel since version 3.10 (release Date: 2013-06-30)  
is depended by
CONFIG_ARCH_MSTARV7