CONFIG_CPU_COPY_V3 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_CPU_COPY_V3.
Result is shown for kernelversion 6.2.5

CONFIG_CPU_COPY_V3 (not configurable)

modulename: copypage-v3.ko

configname: CONFIG_CPU_COPY_V3

Linux Kernel Configuration
└─>CPU_COPY_V3
In linux kernel since version 2.6.12  
source code:
arch/arm/mm/copypage-v3.c
depends
CONFIG_MMU