default or selected kernelversion does not have config value CONFIG_DCACHE_WORD_ACCESS.
Result is shown for kernelversion 6.9-rc6

CONFIG_DCACHE_WORD_ACCESS (not configurable)

configname: CONFIG_DCACHE_WORD_ACCESS

Linux Kernel Configuration
└─>File systems
└─>DCACHE_WORD_ACCESS
In linux kernel since version 3.1 (release Date: 2011-10-24)