default or selected kernelversion does not have config value CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE.
Result is shown for kernelversion 6.9-rc5
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE (not configurable)
configname: CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE
Linux Kernel Configuration
└─>Library routines
└─>ARCH_HAS_UACCESS_FLUSHCACHE