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+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+
+config MMU
+        bool
+        default y
+
+config RWSEM_GENERIC_SPINLOCK
+        bool
+
+config RWSEM_XCHGADD_ALGORITHM
+        bool
+        default y
+
+config GENERIC_CALIBRATE_DELAY
+        bool
+        default y
+
+config GENERIC_BUST_SPINLOCK
+        bool
+
+mainmenu "Linux Kernel Configuration"
+
+config ARCH_S390
+        bool
+        default y
+
+config UID16
+        bool
+        default y
+        depends on ARCH_S390X = 'n'
+
+source "init/Kconfig"
+
+menu "Base setup"
+
+comment "Processor type and features"
+
+config ARCH_S390X
+        bool "64 bit kernel"
+        help
+          Select this option if you have a 64 bit IBM zSeries machine
+          and want to use the 64 bit addressing mode.
+
+config 64BIT
+        def_bool ARCH_S390X
+
+config ARCH_S390_31
+        bool
+        depends on ARCH_S390X = 'n'
+        default y
+
+config SMP
+        bool "Symmetric multi-processing support"
+        ---help---
+          This enables support for systems with more than one CPU. If you have
+          a system with only one CPU, like most personal computers, say N. If
+          you have a system with more than one CPU, say Y.
+
+          If you say N here, the kernel will run on single and multiprocessor
+          machines, but will use only one CPU of a multiprocessor machine. If
+          you say Y here, the kernel will run on many, but not all,
+          singleprocessor machines. On a singleprocessor machine, the kernel
+          will run faster if you say N here.
+
+          See also the <file:Documentation/smp.txt> and the SMP-HOWTO
+          available at <http://www.tldp.org/docs.html#howto>.
+
+          Even if you don't know what to do here, say Y.
+
+config NR_CPUS
+        int "Maximum number of CPUs (2-64)"
+        range 2 64
+        depends on SMP
+        default "32"
+        help
+          This allows you to specify the maximum number of CPUs which this
+          kernel will support.  The maximum supported value is 64 and the
+          minimum value which makes sense is 2.
+
+          This is purely to save memory - each supported CPU adds
+          approximately sixteen kilobytes to the kernel image.
+
+config HOTPLUG_CPU
+        bool "Support for hot-pluggable CPUs"
+        depends on SMP
+        select HOTPLUG
+        default n
+        help
+          Say Y here to be able to turn CPUs off and on. CPUs
+          can be controlled through /sys/devices/system/cpu/cpu#.
+          Say N if you want to disable CPU hotplug.
+
+config MATHEMU
+        bool "IEEE FPU emulation"
+        depends on MARCH_G5
+        help
+          This option is required for IEEE compliant floating point arithmetic
+          on older S/390 machines. Say Y unless you know your machine doesn't
+          need this.
+
+config S390_SUPPORT
+        bool "Kernel support for 31 bit emulation"
+        depends on ARCH_S390X
+        help
+          Select this option if you want to enable your system kernel to
+          handle system-calls from ELF binaries for 31 bit ESA.  This option
+          (and some other stuff like libraries and such) is needed for
+          executing 31 bit applications.  It is safe to say "Y".
+
+config COMPAT
+        bool
+        depends on S390_SUPPORT
+        default y
+
+config SYSVIPC_COMPAT
+        bool
+        depends on COMPAT && SYSVIPC
+        default y
+
+config BINFMT_ELF32
+        tristate "Kernel support for 31 bit ELF binaries"
+        depends on S390_SUPPORT
+        help
+          This allows you to run 32-bit Linux/ELF binaries on your zSeries
+          in 64 bit mode. Everybody wants this; say Y.
+
+comment "Code generation options"
+
+choice
+        prompt "Processor type"
+        default MARCH_G5
+
+config MARCH_G5
+        bool "S/390 model G5 and G6"
+        depends on ARCH_S390_31
+        help
+          Select this to build a 31 bit kernel that works
+          on all S/390 and zSeries machines.
+
+config MARCH_Z900
+        bool "IBM eServer zSeries model z800 and z900"
+        help
+          Select this to optimize for zSeries machines. This
+          will enable some optimizations that are not available
+          on older 31 bit only CPUs.
+
+config MARCH_Z990
+        bool "IBM eServer zSeries model z890 and z990"
+        help
+          Select this enable optimizations for model z890/z990.
+          This will be slightly faster but does not work on
+          older machines such as the z900.
+
+endchoice
+
+config PACK_STACK
+        bool "Pack kernel stack"
+        help
+          This option enables the compiler option -mkernel-backchain if it
+          is available. If the option is available the compiler supports
+          the new stack layout which dramatically reduces the minimum stack
+          frame size. With an old compiler a non-leaf function needs a
+          minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
+          -mkernel-backchain the minimum size drops to 16 byte on 31 bit
+          and 24 byte on 64 bit.
+
+          Say Y if you are unsure.
+
+config SMALL_STACK
+        bool "Use 4kb/8kb for kernel stack instead of 8kb/16kb"
+        depends on PACK_STACK
+        help
+          If you say Y here and the compiler supports the -mkernel-backchain
+          option the kernel will use a smaller kernel stack size. For 31 bit
+          the reduced size is 4kb instead of 8kb and for 64 bit it is 8kb
+          instead of 16kb. This allows to run more thread on a system and
+          reduces the pressure on the memory management for higher order
+          page allocations.
+
+          Say N if you are unsure.
+
+
+config CHECK_STACK
+        bool "Detect kernel stack overflow"
+        help
+          This option enables the compiler option -mstack-guard and
+          -mstack-size if they are available. If the compiler supports them
+          it will emit additional code to each function prolog to trigger
+          an illegal operation if the kernel stack is about to overflow.
+
+          Say N if you are unsure.
+
+config STACK_GUARD
+        int "Size of the guard area (128-1024)"
+        range 128 1024
+        depends on CHECK_STACK
+        default "256"
+        help
+          This allows you to specify the size of the guard area at the lower
+          end of the kernel stack. If the kernel stack points into the guard
+          area on function entry an illegal operation is triggered. The size
+          needs to be a power of 2. Please keep in mind that the size of an
+          interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
+          The minimum size for the stack guard should be 256 for 31 bit and
+          512 for 64 bit.
+
+config WARN_STACK
+        bool "Emit compiler warnings for function with broken stack usage"
+        help
+          This option enables the compiler options -mwarn-framesize and
+          -mwarn-dynamicstack. If the compiler supports these options it
+          will generate warnings for function which either use alloca or
+          create a stack frame bigger then CONFIG_WARN_STACK_SIZE.
+
+          Say N if you are unsure.
+
+config WARN_STACK_SIZE
+        int "Maximum frame size considered safe (128-2048)"
+        range 128 2048
+        depends on WARN_STACK
+        default "256"
+        help
+          This allows you to specify the maximum frame size a function may
+          have without the compiler complaining about it.
+
+comment "I/O subsystem configuration"
+
+config MACHCHK_WARNING
+        bool "Process warning machine checks"
+        help
+          Select this option if you want the machine check handler on IBM S/390 or
+          zSeries to process warning machine checks (e.g. on power failures).
+          If unsure, say "Y".
+
+config QDIO
+        tristate "QDIO support"
+        ---help---
+          This driver provides the Queued Direct I/O base support for the
+          IBM S/390 (G5 and G6) and eServer zSeries (z800, z890, z900 and z990).
+
+          For details please refer to the documentation provided by IBM at
+          <http://www10.software.ibm.com/developerworks/opensource/linux390>
+
+          To compile this driver as a module, choose M here: the
+          module will be called qdio.
+
+          If unsure, say Y.
+
+config QDIO_PERF_STATS
+        bool "Performance statistics in /proc"
+        depends on QDIO
+        help
+          Say Y here to get performance statistics in /proc/qdio_perf
+
+          If unsure, say N.
+
+config QDIO_DEBUG
+        bool "Extended debugging information"
+        depends on QDIO
+        help
+          Say Y here to get extended debugging output in /proc/s390dbf/qdio...
+          Warning: this option reduces the performance of the QDIO module.
+
+          If unsure, say N.
+
+comment "Misc"
+
+config PREEMPT
+        bool "Preemptible Kernel"
+        help
+          This option reduces the latency of the kernel when reacting to
+          real-time or interactive events by allowing a low priority process to
+          be preempted even if it is in kernel mode executing a system call.
+          This allows applications to run more reliably even when the system is
+          under load.
+
+          Say N if you are unsure.
+
+config IPL
+        bool "Builtin IPL record support"
+        help
+          If you want to use the produced kernel to IPL directly from a
+          device, you have to merge a bootsector specific to the device
+          into the first bytes of the kernel. You will have to select the
+          IPL device.
+
+choice
+        prompt "IPL method generated into head.S"
+        depends on IPL
+        default IPL_TAPE
+        help
+          Select "tape" if you want to IPL the image from a Tape.
+
+          Select "vm_reader" if you are running under VM/ESA and want
+          to IPL the image from the emulated card reader.
+
+config IPL_TAPE
+        bool "tape"
+
+config IPL_VM
+        bool "vm_reader"
+
+endchoice
+
+source "fs/Kconfig.binfmt"
+
+config PROCESS_DEBUG
+        bool "Show crashed user process info"
+        help
+          Say Y to print all process fault locations to the console.  This is
+          a debugging option; you probably do not want to set it unless you
+          are an S390 port maintainer.
+
+config PFAULT
+        bool "Pseudo page fault support"
+        help
+          Select this option, if you want to use PFAULT pseudo page fault
+          handling under VM. If running native or in LPAR, this option
+          has no effect. If your VM does not support PFAULT, PAGEEX
+          pseudo page fault handling will be used.
+          Note that VM 4.2 supports PFAULT but has a bug in its
+          implementation that causes some problems.
+          Everybody who wants to run Linux under VM != VM4.2 should select
+          this option.
+
+config SHARED_KERNEL
+        bool "VM shared kernel support"
+        help
+          Select this option, if you want to share the text segment of the
+          Linux kernel between different VM guests. This reduces memory
+          usage with lots of guests but greatly increases kernel size.
+          You should only select this option if you know what you are
+          doing and want to exploit this feature.
+
+config CMM
+        tristate "Cooperative memory management"
+        help
+          Select this option, if you want to enable the kernel interface
+          to reduce the memory size of the system. This is accomplished
+          by allocating pages of memory and put them "on hold". This only
+          makes sense for a system running under VM where the unused pages
+          will be reused by VM for other guest systems. The interface
+          allows an external monitor to balance memory of many systems.
+          Everybody who wants to run Linux under VM should select this
+          option.
+
+config CMM_PROC
+        bool "/proc interface to cooperative memory management"
+        depends on CMM
+        help
+          Select this option to enable the /proc interface to the
+          cooperative memory management.
+
+config CMM_IUCV
+        bool "IUCV special message interface to cooperative memory management"
+        depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
+        help
+          Select this option to enable the special message interface to
+          the cooperative memory management.
+
+config VIRT_TIMER
+        bool "Virtual CPU timer support"
+        help
+          This provides a kernel interface for virtual CPU timers.
+          Default is disabled.
+
+config VIRT_CPU_ACCOUNTING
+        bool "Base user process accounting on virtual cpu timer"
+        depends on VIRT_TIMER
+        help
+          Select this option to use CPU timer deltas to do user
+          process accounting.
+
+config APPLDATA_BASE
+        bool "Linux - VM Monitor Stream, base infrastructure"
+        depends on PROC_FS && VIRT_TIMER=y
+        help
+          This provides a kernel interface for creating and updating z/VM APPLDATA
+          monitor records. The monitor records are updated at certain time
+          intervals, once the timer is started.
+          Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
+          i.e. enables or disables monitoring on the Linux side.
+          A custom interval value (in seconds) can be written to
+          /proc/appldata/interval.
+
+          Defaults are 60 seconds interval and timer off.
+          The /proc entries can also be read from, showing the current settings.
+
+config APPLDATA_MEM
+        tristate "Monitor memory management statistics"
+        depends on APPLDATA_BASE
+        help
+          This provides memory management related data to the Linux - VM Monitor
+          Stream, like paging/swapping rate, memory utilisation, etc.
+          Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
+          APPLDATA monitor record, i.e. enables or disables monitoring this record
+          on the z/VM side.
+
+          Default is disabled.
+          The /proc entry can also be read from, showing the current settings.
+
+          This can also be compiled as a module, which will be called
+          appldata_mem.o.
+
+config APPLDATA_OS
+        tristate "Monitor OS statistics"
+        depends on APPLDATA_BASE
+        help
+          This provides OS related data to the Linux - VM Monitor Stream, like
+          CPU utilisation, etc.
+          Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
+          APPLDATA monitor record, i.e. enables or disables monitoring this record
+          on the z/VM side.
+
+          Default is disabled.
+          This can also be compiled as a module, which will be called
+          appldata_os.o.
+
+config APPLDATA_NET_SUM
+        tristate "Monitor overall network statistics"
+        depends on APPLDATA_BASE
+        help
+          This provides network related data to the Linux - VM Monitor Stream,
+          currently there is only a total sum of network I/O statistics, no
+          per-interface data.
+          Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
+          APPLDATA monitor record, i.e. enables or disables monitoring this record
+          on the z/VM side.
+
+          Default is disabled.
+          This can also be compiled as a module, which will be called
+          appldata_net_sum.o.
+
+config NO_IDLE_HZ
+        bool "No HZ timer ticks in idle"
+        help
+          Switches the regular HZ timer off when the system is going idle.
+          This helps z/VM to detect that the Linux system is idle. VM can
+          then "swap-out" this guest which reduces memory usage. It also
+          reduces the overhead of idle systems.
+
+          The HZ timer can be switched on/off via /proc/sys/kernel/hz_timer.
+          hz_timer=0 means HZ timer is disabled. hz_timer=1 means HZ
+          timer is active.
+
+config NO_IDLE_HZ_INIT
+        bool "HZ timer in idle off by default"
+        depends on NO_IDLE_HZ
+        help
+          The HZ timer is switched off in idle by default. That means the
+          HZ timer is already disabled at boot time.
+
+endmenu
+
+config PCMCIA
+        bool
+        default n
+
+source "drivers/base/Kconfig"
+
+source "drivers/scsi/Kconfig"
+
+source "drivers/s390/Kconfig"
+
+source "net/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/s390/oprofile/Kconfig"
+
+source "arch/s390/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"