default or selected kernelversion does not have config value CONFIG_X86_USE_3DNOW.
Result is shown for kernelversion 6.9.9

CONFIG_X86_USE_3DNOW (not configurable)

configname: CONFIG_X86_USE_3DNOW

Linux Kernel Configuration
└─>X86_USE_3DNOW
In linux kernel since version 2.6.12