CONFIG_CMODEL_MEDANY is not available for thedefaultarchitecture x86.
Result is shown for architecture riscv

medium any code model

configname: CONFIG_CMODEL_MEDANY

Kernel Code Model
└─>medium any code model
In linux kernel since version 4.2 (release Date: 2015-08-30)  
is selected by
CONFIG_MAXPHYSMEM_128GB