CONFIG_LAZY_FPU is not available for thedefaultarchitecture x86.
Result is shown for architecture nds32
default or selected kernelversion does not have config value CONFIG_LAZY_FPU.
Result is shown for kernelversion 6.9.2

lazy FPU support

configname: CONFIG_LAZY_FPU

Linux Kernel Configuration
└─>lazy FPU support
In linux kernel since version 5 (release Date: 2019-03-03)  
Say Y here to enable the lazy FPU scheme. The lazy FPU scheme can
enhance system performance by reducing the context switch
frequency of the FPU register.

For nomal case, say Y.

depends
CONFIG_FPU