CONFIG_S390 is not available for thedefaultarchitecture x86.
Result is shown for architecture s390

CONFIG_S390 (not configurable)

configname: CONFIG_S390

Linux Kernel Configuration
└─>S390
In linux kernel since version 2.6.16 (release Date: 2006-03-19)  
selects
CONFIG_ARCH_DISCARD_MEMBLOCK
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG
CONFIG_ARCH_INLINE_READ_LOCK
CONFIG_ARCH_INLINE_READ_LOCK_BH
CONFIG_ARCH_INLINE_READ_LOCK_IRQ
CONFIG_ARCH_INLINE_READ_LOCK_IRQSAVE
CONFIG_ARCH_INLINE_READ_TRYLOCK
CONFIG_ARCH_INLINE_READ_UNLOCK
CONFIG_ARCH_INLINE_READ_UNLOCK_BH
CONFIG_ARCH_INLINE_READ_UNLOCK_IRQ
CONFIG_ARCH_INLINE_READ_UNLOCK_IRQRESTORE
CONFIG_ARCH_INLINE_SPIN_LOCK
CONFIG_ARCH_INLINE_SPIN_LOCK_BH
CONFIG_ARCH_INLINE_SPIN_LOCK_IRQ
CONFIG_ARCH_INLINE_SPIN_LOCK_IRQSAVE
CONFIG_ARCH_INLINE_SPIN_TRYLOCK
CONFIG_ARCH_INLINE_SPIN_TRYLOCK_BH
CONFIG_ARCH_INLINE_SPIN_UNLOCK
CONFIG_ARCH_INLINE_SPIN_UNLOCK_BH
CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQ
CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
CONFIG_ARCH_INLINE_WRITE_LOCK
CONFIG_ARCH_INLINE_WRITE_LOCK_BH
CONFIG_ARCH_INLINE_WRITE_LOCK_IRQ
CONFIG_ARCH_INLINE_WRITE_LOCK_IRQSAVE
CONFIG_ARCH_INLINE_WRITE_TRYLOCK
CONFIG_ARCH_INLINE_WRITE_UNLOCK
CONFIG_ARCH_INLINE_WRITE_UNLOCK_BH
CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQ
CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
CONFIG_ARCH_SAVE_PAGE_KEYS
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW
CONFIG_ARCH_USE_CMPXCHG_LOCKREF
CONFIG_ARCH_WANT_IPC_PARSE_VERSION
CONFIG_BUILDTIME_EXTABLE_SORT
CONFIG_CLONE_BACKWARDS2
CONFIG_GENERIC_CLOCKEVENTS
CONFIG_GENERIC_CPU_DEVICES
CONFIG_GENERIC_SMP_IDLE_THREAD
CONFIG_GENERIC_TIME_VSYSCALL
CONFIG_HAVE_ALIGNED_STRUCT_PAGE
CONFIG_HAVE_ARCH_JUMP_LABEL
CONFIG_HAVE_ARCH_SECCOMP_FILTER
CONFIG_HAVE_ARCH_TRACEHOOK
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE
CONFIG_HAVE_BPF_JIT
CONFIG_HAVE_CMPXCHG_DOUBLE
CONFIG_HAVE_CMPXCHG_LOCAL
CONFIG_HAVE_C_RECORDMCOUNT
CONFIG_HAVE_DEBUG_KMEMLEAK
CONFIG_HAVE_DYNAMIC_FTRACE
CONFIG_HAVE_FTRACE_MCOUNT_RECORD
CONFIG_HAVE_FUNCTION_GRAPH_TRACER
CONFIG_HAVE_FUNCTION_TRACER
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
CONFIG_HAVE_FUTEX_CMPXCHG
CONFIG_HAVE_KERNEL_BZIP2
CONFIG_HAVE_KERNEL_GZIP
CONFIG_HAVE_KERNEL_LZ4
CONFIG_HAVE_KERNEL_LZMA
CONFIG_HAVE_KERNEL_LZO
CONFIG_HAVE_KERNEL_XZ
CONFIG_HAVE_KPROBES
CONFIG_HAVE_KRETPROBES
CONFIG_HAVE_KVM
CONFIG_HAVE_MEMBLOCK
CONFIG_HAVE_MEMBLOCK_NODE_MAP
CONFIG_HAVE_MOD_ARCH_SPECIFIC
CONFIG_HAVE_OPROFILE
CONFIG_HAVE_PERF_EVENTS
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API
CONFIG_HAVE_SYSCALL_TRACEPOINTS
CONFIG_HAVE_UID16
CONFIG_HAVE_VIRT_CPU_ACCOUNTING
CONFIG_INIT_ALL_POSSIBLE
CONFIG_KTIME_SCALAR
CONFIG_MODULES_USE_ELF_RELA
CONFIG_OLD_SIGACTION
CONFIG_OLD_SIGSUSPEND3
CONFIG_SYSCTL_EXCEPTION_TRACE
CONFIG_USE_GENERIC_SMP_HELPERS
CONFIG_VIRT_CPU_ACCOUNTING
CONFIG_VIRT_TO_BUS