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-config MMU
- def_bool y
-
-config ZONE_DMA
- def_bool y
-
-config LOCKDEP_SUPPORT
- def_bool y
-
-config STACKTRACE_SUPPORT
- def_bool y
-
-config HAVE_LATENCYTOP_SUPPORT
- def_bool y
-
-config RWSEM_GENERIC_SPINLOCK
- bool
-
-config RWSEM_XCHGADD_ALGORITHM
- def_bool y
-
-config ARCH_HAS_ILOG2_U32
- def_bool n
-
-config ARCH_HAS_ILOG2_U64
- def_bool n
-
-config GENERIC_HWEIGHT
- def_bool y
-
-config GENERIC_TIME_VSYSCALL
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config GENERIC_BUG
- def_bool y if BUG
-
-config GENERIC_BUG_RELATIVE_POINTERS
- def_bool y
-
-config NO_IOMEM
- def_bool y
-
-config NO_DMA
- def_bool y
-
-config ARCH_DMA_ADDR_T_64BIT
- def_bool 64BIT
-
-config GENERIC_LOCKBREAK
- def_bool y if SMP && PREEMPT
-
-config PGSTE
- def_bool y if KVM
-
-config VIRT_CPU_ACCOUNTING
- def_bool y
-
-config ARCH_SUPPORTS_DEBUG_PAGEALLOC
- def_bool y
-
-config S390
- def_bool y
- select USE_GENERIC_SMP_HELPERS if SMP
- select GENERIC_CPU_DEVICES if !SMP
- select HAVE_SYSCALL_WRAPPERS
- select HAVE_FUNCTION_TRACER
- select HAVE_FUNCTION_TRACE_MCOUNT_TEST
- select HAVE_FTRACE_MCOUNT_RECORD
- select HAVE_C_RECORDMCOUNT
- select HAVE_SYSCALL_TRACEPOINTS
- select HAVE_DYNAMIC_FTRACE
- select HAVE_FUNCTION_GRAPH_TRACER
- select HAVE_REGS_AND_STACK_ACCESS_API
- select HAVE_OPROFILE
- select HAVE_KPROBES
- select HAVE_KRETPROBES
- select HAVE_KVM if 64BIT
- select HAVE_ARCH_TRACEHOOK
- select INIT_ALL_POSSIBLE
- select HAVE_IRQ_WORK
- select HAVE_PERF_EVENTS
- select ARCH_HAVE_NMI_SAFE_CMPXCHG
- select HAVE_KERNEL_GZIP
- select HAVE_KERNEL_BZIP2
- select HAVE_KERNEL_LZMA
- select HAVE_KERNEL_LZO
- select HAVE_KERNEL_XZ
- select HAVE_ARCH_MUTEX_CPU_RELAX
- select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
- select ARCH_SAVE_PAGE_KEYS if HIBERNATION
- select HAVE_MEMBLOCK
- select HAVE_MEMBLOCK_NODE_MAP
- select ARCH_DISCARD_MEMBLOCK
- select ARCH_INLINE_SPIN_TRYLOCK
- select ARCH_INLINE_SPIN_TRYLOCK_BH
- select ARCH_INLINE_SPIN_LOCK
- select ARCH_INLINE_SPIN_LOCK_BH
- select ARCH_INLINE_SPIN_LOCK_IRQ
- select ARCH_INLINE_SPIN_LOCK_IRQSAVE
- select ARCH_INLINE_SPIN_UNLOCK
- select ARCH_INLINE_SPIN_UNLOCK_BH
- select ARCH_INLINE_SPIN_UNLOCK_IRQ
- select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
- select ARCH_INLINE_READ_TRYLOCK
- select ARCH_INLINE_READ_LOCK
- select ARCH_INLINE_READ_LOCK_BH
- select ARCH_INLINE_READ_LOCK_IRQ
- select ARCH_INLINE_READ_LOCK_IRQSAVE
- select ARCH_INLINE_READ_UNLOCK
- select ARCH_INLINE_READ_UNLOCK_BH
- select ARCH_INLINE_READ_UNLOCK_IRQ
- select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
- select ARCH_INLINE_WRITE_TRYLOCK
- select ARCH_INLINE_WRITE_LOCK
- select ARCH_INLINE_WRITE_LOCK_BH
- select ARCH_INLINE_WRITE_LOCK_IRQ
- select ARCH_INLINE_WRITE_LOCK_IRQSAVE
- select ARCH_INLINE_WRITE_UNLOCK
- select ARCH_INLINE_WRITE_UNLOCK_BH
- select ARCH_INLINE_WRITE_UNLOCK_IRQ
- select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
-
-config SCHED_OMIT_FRAME_POINTER
- def_bool y
-
-source "init/Kconfig"
-
-source "kernel/Kconfig.freezer"
-
-menu "Base setup"
-
-comment "Processor type and features"
-
-source "kernel/time/Kconfig"
-
-config 64BIT
- def_bool y
- prompt "64 bit kernel"
- help
- Select this option if you have an IBM z/Architecture machine
- and want to use the 64 bit addressing mode.
-
-config 32BIT
- def_bool y if !64BIT
-
-config KTIME_SCALAR
- def_bool 32BIT
-
-config SMP
- def_bool y
- prompt "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 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" if !64BIT
- default "64" if 64BIT
- 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
- def_bool y
- prompt "Support for hot-pluggable CPUs"
- depends on SMP
- select HOTPLUG
- 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 SCHED_MC
- def_bool n
-
-config SCHED_BOOK
- def_bool y
- prompt "Book scheduler support"
- depends on SMP
- select SCHED_MC
- help
- Book scheduler support improves the CPU scheduler's decision making
- when dealing with machines that have several books.
-
-config MATHEMU
- def_bool y
- prompt "IEEE FPU emulation"
- depends on MARCH_G5
- help
- This option is required for IEEE compliant floating point arithmetic
- on older ESA/390 machines. Say Y unless you know your machine doesn't
- need this.
-
-config COMPAT
- def_bool y
- prompt "Kernel support for 31 bit emulation"
- depends on 64BIT
- select COMPAT_BINFMT_ELF
- select ARCH_WANT_OLD_COMPAT_IPC
- 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 SYSVIPC_COMPAT
- def_bool y if COMPAT && SYSVIPC
-
-config KEYS_COMPAT
- def_bool y if COMPAT && KEYS
-
-config AUDIT_ARCH
- def_bool y
-
-comment "Code generation options"
-
-choice
- prompt "Processor type"
- default MARCH_G5
-
-config MARCH_G5
- bool "System/390 model G5 and G6"
- depends on !64BIT
- help
- Select this to build a 31 bit kernel that works
- on all ESA/390 and z/Architecture machines.
-
-config MARCH_Z900
- bool "IBM zSeries model z800 and z900"
- help
- Select this to enable optimizations for model z800/z900 (2064 and
- 2066 series). This will enable some optimizations that are not
- available on older ESA/390 (31 Bit) only CPUs.
-
-config MARCH_Z990
- bool "IBM zSeries model z890 and z990"
- help
- Select this to enable optimizations for model z890/z990 (2084 and
- 2086 series). The kernel will be slightly faster but will not work
- on older machines.
-
-config MARCH_Z9_109
- bool "IBM System z9"
- help
- Select this to enable optimizations for IBM System z9 (2094 and
- 2096 series). The kernel will be slightly faster but will not work
- on older machines.
-
-config MARCH_Z10
- bool "IBM System z10"
- help
- Select this to enable optimizations for IBM System z10 (2097 and
- 2098 series). The kernel will be slightly faster but will not work
- on older machines.
-
-config MARCH_Z196
- bool "IBM zEnterprise 114 and 196"
- help
- Select this to enable optimizations for IBM zEnterprise 114 and 196
- (2818 and 2817 series). The kernel will be slightly faster but will
- not work on older machines.
-
-endchoice
-
-config PACK_STACK
- def_bool y
- prompt "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
- def_bool n
- prompt "Use 8kb for kernel stack instead of 16kb"
- depends on PACK_STACK && 64BIT && !LOCKDEP
- help
- If you say Y here and the compiler supports the -mkernel-backchain
- option the kernel will use a smaller kernel stack size. The reduced
- size is 8kb instead of 16kb. This allows to run more threads 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
- def_bool y
- prompt "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_DYNAMIC_STACK
- def_bool n
- prompt "Emit compiler warnings for function with dynamic stack usage"
- help
- This option enables the compiler option -mwarn-dynamicstack. If the
- compiler supports this options generates warnings for functions
- that dynamically allocate stack space using alloca.
-
- Say N if you are unsure.
-
-comment "Kernel preemption"
-
-source "kernel/Kconfig.preempt"
-
-config ARCH_SPARSEMEM_ENABLE
- def_bool y
- select SPARSEMEM_VMEMMAP_ENABLE
- select SPARSEMEM_VMEMMAP
- select SPARSEMEM_STATIC if !64BIT
-
-config ARCH_SPARSEMEM_DEFAULT
- def_bool y
-
-config ARCH_SELECT_MEMORY_MODEL
- def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y if SPARSEMEM
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
- def_bool y
-
-config ARCH_HIBERNATION_POSSIBLE
- def_bool y if 64BIT
-
-source "mm/Kconfig"
-
-comment "I/O subsystem configuration"
-
-config QDIO
- def_tristate y
- prompt "QDIO support"
- ---help---
- This driver provides the Queued Direct I/O base support for
- IBM System z.
-
- To compile this driver as a module, choose M here: the
- module will be called qdio.
-
- If unsure, say Y.
-
-config CHSC_SCH
- def_tristate m
- prompt "Support for CHSC subchannels"
- help
- This driver allows usage of CHSC subchannels. A CHSC subchannel
- is usually present on LPAR only.
- The driver creates a device /dev/chsc, which may be used to
- obtain I/O configuration information about the machine and
- to issue asynchronous chsc commands (DANGEROUS).
- You will usually only want to use this interface on a special
- LPAR designated for system management.
-
- To compile this driver as a module, choose M here: the
- module will be called chsc_sch.
-
- If unsure, say N.
-
-comment "Misc"
-
-config IPL
- def_bool y
- prompt "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_VM
- 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 FORCE_MAX_ZONEORDER
- int
- default "9"
-
-config PFAULT
- def_bool y
- prompt "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
- def_bool y
- prompt "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.
- Also if a kernel was IPL'ed from a shared segment the kexec system
- call will not work.
- You should only select this option if you know what you are
- doing and want to exploit this feature.
-
-config CMM
- def_tristate n
- prompt "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_IUCV
- def_bool y
- prompt "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 APPLDATA_BASE
- def_bool n
- prompt "Linux - VM Monitor Stream, base infrastructure"
- depends on PROC_FS
- 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
- def_tristate m
- prompt "Monitor memory management statistics"
- depends on APPLDATA_BASE && VM_EVENT_COUNTERS
- 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
- def_tristate m
- prompt "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
- def_tristate m
- prompt "Monitor overall network statistics"
- depends on APPLDATA_BASE && NET
- 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.
-
-source kernel/Kconfig.hz
-
-config S390_HYPFS_FS
- def_bool y
- prompt "s390 hypervisor file system support"
- select SYS_HYPERVISOR
- help
- This is a virtual file system intended to provide accounting
- information in an s390 hypervisor environment.
-
-config KEXEC
- def_bool n
- prompt "kexec system call"
- help
- kexec is a system call that implements the ability to shutdown your
- current kernel, and to start another kernel. It is like a reboot
- but is independent of hardware/microcode support.
-
-config CRASH_DUMP
- bool "kernel crash dumps"
- depends on 64BIT
- select KEXEC
- help
- Generate crash dump after being started by kexec.
- Crash dump kernels are loaded in the main kernel with kexec-tools
- into a specially reserved region and then later executed after
- a crash by kdump/kexec.
- For more details see Documentation/kdump/kdump.txt
-
-config ZFCPDUMP
- def_bool n
- prompt "zfcpdump support"
- select SMP
- help
- Select this option if you want to build an zfcpdump enabled kernel.
- Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
-
-config S390_GUEST
- def_bool y
- prompt "s390 guest support for KVM (EXPERIMENTAL)"
- depends on 64BIT && EXPERIMENTAL
- select VIRTUALIZATION
- select VIRTIO
- select VIRTIO_RING
- select VIRTIO_CONSOLE
- help
- Select this option if you want to run the kernel as a guest under
- the KVM hypervisor. This will add detection for KVM as well as a
- virtio transport. If KVM is detected, the virtio console will be
- the default console.
-
-config SECCOMP
- def_bool y
- prompt "Enable seccomp to safely compute untrusted bytecode"
- depends on PROC_FS
- help
- This kernel feature is useful for number crunching applications
- that may need to compute untrusted bytecode during their
- execution. By using pipes or other transports made available to
- the process as file descriptors supporting the read/write
- syscalls, it's possible to isolate those applications in
- their own address space using seccomp. Once seccomp is
- enabled via /proc/<pid>/seccomp, it cannot be disabled
- and the task is only allowed to execute a few safe syscalls
- defined by each seccomp mode.
-
- If unsure, say Y.
-
-endmenu
-
-menu "Power Management"
-
-source "kernel/power/Kconfig"
-
-endmenu
-
-source "net/Kconfig"
-
-config PCMCIA
- def_bool n
-
-config CCW
- def_bool y
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/s390/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
-
-source "arch/s390/kvm/Kconfig"