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_USE_GENERIC_SMP_HELPERS
CONFIG_HAVE_SYSCALL_WRAPPERS
CONFIG_HAVE_FUNCTION_TRACER
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
CONFIG_HAVE_FTRACE_MCOUNT_RECORD
CONFIG_HAVE_C_RECORDMCOUNT
CONFIG_HAVE_SYSCALL_TRACEPOINTS
CONFIG_HAVE_DYNAMIC_FTRACE
CONFIG_HAVE_FUNCTION_GRAPH_TRACER
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API
CONFIG_HAVE_OPROFILE
CONFIG_HAVE_KPROBES
CONFIG_HAVE_KRETPROBES
CONFIG_HAVE_KVM
CONFIG_HAVE_ARCH_TRACEHOOK
CONFIG_INIT_ALL_POSSIBLE
CONFIG_HAVE_IRQ_WORK
CONFIG_HAVE_PERF_EVENTS
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG
CONFIG_HAVE_KERNEL_GZIP
CONFIG_HAVE_KERNEL_BZIP2
CONFIG_HAVE_KERNEL_LZMA
CONFIG_HAVE_KERNEL_LZO
CONFIG_HAVE_KERNEL_XZ
CONFIG_HAVE_GET_USER_PAGES_FAST
CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX
CONFIG_HAVE_ARCH_JUMP_LABEL
CONFIG_HAVE_RCU_TABLE_FREE
CONFIG_ARCH_INLINE_SPIN_TRYLOCK
CONFIG_ARCH_INLINE_SPIN_TRYLOCK_BH
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_UNLOCK
CONFIG_ARCH_INLINE_SPIN_UNLOCK_BH
CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQ
CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
CONFIG_ARCH_INLINE_READ_TRYLOCK
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_UNLOCK
CONFIG_ARCH_INLINE_READ_UNLOCK_BH
CONFIG_ARCH_INLINE_READ_UNLOCK_IRQ
CONFIG_ARCH_INLINE_READ_UNLOCK_IRQRESTORE
CONFIG_ARCH_INLINE_WRITE_TRYLOCK
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_UNLOCK
CONFIG_ARCH_INLINE_WRITE_UNLOCK_BH
CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQ
CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE

is selected by
CONFIG_ZCRYPT
CONFIG_CRYPTO_SHA1_S390
CONFIG_CRYPTO_SHA256_S390
CONFIG_CRYPTO_SHA512_S390
CONFIG_CRYPTO_DES_S390
CONFIG_CRYPTO_AES_S390
CONFIG_CRYPTO_GHASH_S390
CONFIG_ZFCP
CONFIG_WLAN
CONFIG_KEYBOARD_ATARI
CONFIG_KEYBOARD_ATKBD
CONFIG_KEYBOARD_LKKBD
CONFIG_KEYBOARD_GPIO_POLLED
CONFIG_KEYBOARD_HIL
CONFIG_KEYBOARD_HP6XX
CONFIG_KEYBOARD_NEWTON
CONFIG_KEYBOARD_STOWAWAY
CONFIG_KEYBOARD_SUNKBD
CONFIG_KEYBOARD_XTKBD
CONFIG_MOUSE_PS2
CONFIG_MOUSE_SERIAL
CONFIG_MOUSE_APPLETOUCH
CONFIG_MOUSE_BCM5974
CONFIG_MOUSE_ATARI
CONFIG_MOUSE_VSXXXAA
CONFIG_MOUSE_GPIO
CONFIG_JOYSTICK_ANALOG
CONFIG_JOYSTICK_A3D
CONFIG_JOYSTICK_ADI
CONFIG_JOYSTICK_COBRA
CONFIG_JOYSTICK_GF2K
CONFIG_JOYSTICK_GRIP
CONFIG_JOYSTICK_GRIP_MP
CONFIG_JOYSTICK_GUILLEMOT
CONFIG_JOYSTICK_INTERACT
CONFIG_JOYSTICK_SIDEWINDER
CONFIG_JOYSTICK_TMDC
CONFIG_JOYSTICK_WARRIOR
CONFIG_JOYSTICK_MAGELLAN
CONFIG_JOYSTICK_SPACEORB
CONFIG_JOYSTICK_SPACEBALL
CONFIG_JOYSTICK_STINGER
CONFIG_JOYSTICK_TWIDJOY
CONFIG_JOYSTICK_ZHENHUA
CONFIG_JOYSTICK_GAMECON
CONFIG_JOYSTICK_JOYDUMP
CONFIG_JOYSTICK_XPAD
CONFIG_JOYSTICK_XPAD_FF
CONFIG_TABLET_USB_ACECAD
CONFIG_TABLET_USB_AIPTEK
CONFIG_TABLET_USB_HANWANG
CONFIG_TABLET_USB_KBTAB
CONFIG_TABLET_USB_WACOM
CONFIG_TOUCHSCREEN_BITSY
CONFIG_TOUCHSCREEN_DYNAPRO
CONFIG_TOUCHSCREEN_HAMPSHIRE
CONFIG_TOUCHSCREEN_FUJITSU
CONFIG_TOUCHSCREEN_S3C2410
CONFIG_TOUCHSCREEN_GUNZE
CONFIG_TOUCHSCREEN_ELO
CONFIG_TOUCHSCREEN_WACOM_W8001
CONFIG_TOUCHSCREEN_MTOUCH
CONFIG_TOUCHSCREEN_INEXIO
CONFIG_TOUCHSCREEN_PENMOUNT
CONFIG_TOUCHSCREEN_TOUCHRIGHT
CONFIG_TOUCHSCREEN_TOUCHWIN
CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE
CONFIG_TOUCHSCREEN_USB_COMPOSITE
CONFIG_TOUCHSCREEN_TOUCHIT213
CONFIG_INPUT_MMA8450
CONFIG_INPUT_APANEL
CONFIG_INPUT_COBALT_BTNS
CONFIG_INPUT_WISTRON_BTNS
CONFIG_INPUT_ATI_REMOTE
CONFIG_INPUT_ATI_REMOTE2
CONFIG_INPUT_KEYSPAN_REMOTE
CONFIG_INPUT_KXTJ9_POLLED_MODE
CONFIG_INPUT_POWERMATE
CONFIG_INPUT_YEALINK
CONFIG_INPUT_CM109
CONFIG_INPUT_TWL4030_VIBRA
CONFIG_INPUT_TWL6040_VIBRA
CONFIG_INPUT_SGI_BTNS
CONFIG_HP_SDC_RTC
CONFIG_INPUT_RB532_BUTTON
CONFIG_INPUT_DM355EVM
CONFIG_INPUT_XEN_KBDDEV_FRONTEND
CONFIG_HVC_IUCV
CONFIG_RTC_CLASS
CONFIG_NET_DSA
CONFIG_BAYCOM_SER_FDX
CONFIG_BAYCOM_SER_HDX
CONFIG_IRDA
CONFIG_BT
CONFIG_DEBUG_KMEMLEAK