CONFIG_VTAG_ICACHE is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_VTAG_ICACHE.
Result is shown for kernelversion 5.4.123

Support for Virtual Tagged I-cache

configname: CONFIG_VTAG_ICACHE

Linux/MIPS Kernel Configuration
└─>CPU selection
└─>Support for Virtual Tagged I-cache
In linux kernel since version 2.6.12