CONFIG_ALPHA_AVANTI_CH is not available for thedefaultarchitecture x86.
Result is shown for architecture alpha
default or selected kernelversion does not have config value CONFIG_ALPHA_AVANTI_CH.
Result is shown for kernelversion 6.9.9

Avanti

configname: CONFIG_ALPHA_AVANTI_CH

Alpha system type
└─>Avanti
In linux kernel since version 2.6.12