CONFIG_CHECK_CACHE_COHERENCY is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_CHECK_CACHE_COHERENCY (not configurable)

configname: CONFIG_CHECK_CACHE_COHERENCY

Linux Kernel Configuration
└─>Processor support
└─>CHECK_CACHE_COHERENCY
In linux kernel since version 2.6.23 (release Date: 2007-10-09)