CONFIG_ARCH_S390 is not available for thedefaultarchitecture x86.
Result is shown for architecture s390
default or selected kernelversion does not have config value CONFIG_ARCH_S390.
Result is shown for kernelversion 5.4.123
CONFIG_ARCH_S390 (not configurable)
configname: CONFIG_ARCH_S390
Linux Kernel Configuration
└─>ARCH_S390