CONFIG_SH_DIRECT_MAPPED is not available for thedefaultarchitecture x86.
Result is shown for architecture sh
default or selected kernelversion does not have config value CONFIG_SH_DIRECT_MAPPED.
Result is shown for kernelversion 5.3.7

Use direct-mapped caching

configname: CONFIG_SH_DIRECT_MAPPED

Linux Kernel Configuration
└─>Cache configuration
└─>Use direct-mapped caching
In linux kernel since version 2.6.16 (release Date: 2006-03-19)  
Selecting this option will configure the caches to be direct-mapped,
even if the cache supports a 2 or 4-way mode. This is useful primarily
for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
SH4-202, SH4-501, etc.)

Turn this option off for platforms that do not have a direct-mapped
cache, and you have no need to run the caches in such a configuration.