CONFIG_MAXPHYSMEM_128GB is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT or riscv
default or selected kernelversion does not have config value CONFIG_MAXPHYSMEM_128GB.
Result is shown for kernelversion 6.9.9
128GiB
configname: CONFIG_MAXPHYSMEM_128GB
Maximum Physical Memory
└─>128GiB