CONFIG_CPU_UCV2 is not available for thedefaultarchitecture x86.
Result is shown for architecture unicore32

CONFIG_CPU_UCV2 (not configurable)

modulename: cache-ucv2.ko

configname: CONFIG_CPU_UCV2

Linux Kernel Configuration
└─>CPU_UCV2
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
source code:
/arch/unicore32/mm/