CONFIG_SYS_HAS_CPU_LOONGSON2F is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_SYS_HAS_CPU_LOONGSON2F (not configurable)

configname: CONFIG_SYS_HAS_CPU_LOONGSON2F

Linux Kernel Configuration
└─>CPU selection
└─>SYS_HAS_CPU_LOONGSON2F
In linux kernel since version 2.6.33 (release Date: 2010-02-24)