CONFIG_CPU_HAS_CACHEV2 is not available for thedefaultarchitecture x86.
Result is shown for architecture csky

CONFIG_CPU_HAS_CACHEV2 (not configurable)

configname: CONFIG_CPU_HAS_CACHEV2

Linux Kernel Configuration
└─>CPU_HAS_CACHEV2
In linux kernel since version 4.2 (release Date: 2015-08-30)