CONFIG_CPU_HAS_ICACHE_INS is not available for the selected architecture x86.
Result is shown for architecture csky

CPU has Icache invalidate instructions

configname: CONFIG_CPU_HAS_ICACHE_INS

Linux Kernel Configuration
└─>Processor type and features
└─>CPU has Icache invalidate instructions
In linux kernel since version 5.1 (release Date: 2019-05-05)