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arch/s390/Kconfig
17.4 KB
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config MMU |
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def_bool y |
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config ZONE_DMA |
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def_bool y |
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|
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config LOCKDEP_SUPPORT |
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def_bool y |
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config STACKTRACE_SUPPORT |
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def_bool y |
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config HAVE_LATENCYTOP_SUPPORT def_bool y |
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config RWSEM_GENERIC_SPINLOCK bool config RWSEM_XCHGADD_ALGORITHM |
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def_bool y |
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|
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config ARCH_HAS_ILOG2_U32 |
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def_bool n |
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config ARCH_HAS_ILOG2_U64 |
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def_bool n |
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config GENERIC_HWEIGHT |
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def_bool y |
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|
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config GENERIC_TIME_VSYSCALL def_bool y |
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config GENERIC_CLOCKEVENTS def_bool y |
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config GENERIC_BUG |
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def_bool y if BUG |
c0007f1a6 [S390] Use generi... |
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|
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config GENERIC_BUG_RELATIVE_POINTERS def_bool y |
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config NO_IOMEM |
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def_bool y |
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config NO_DMA def_bool y |
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config ARCH_DMA_ADDR_T_64BIT def_bool 64BIT |
b6b40c532 [S390] Define GEN... |
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config GENERIC_LOCKBREAK |
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def_bool y if SMP && PREEMPT |
b6b40c532 [S390] Define GEN... |
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|
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config PGSTE |
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def_bool y if KVM |
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|
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config VIRT_CPU_ACCOUNTING def_bool y |
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config ARCH_SUPPORTS_DEBUG_PAGEALLOC def_bool y |
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config S390 |
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def_bool y |
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select USE_GENERIC_SMP_HELPERS if SMP |
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select HAVE_SYSCALL_WRAPPERS |
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select HAVE_FUNCTION_TRACER |
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select HAVE_FUNCTION_TRACE_MCOUNT_TEST |
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select HAVE_FTRACE_MCOUNT_RECORD |
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select HAVE_C_RECORDMCOUNT |
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select HAVE_SYSCALL_TRACEPOINTS |
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select HAVE_DYNAMIC_FTRACE |
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select HAVE_FUNCTION_GRAPH_TRACER |
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select HAVE_REGS_AND_STACK_ACCESS_API |
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select HAVE_OPROFILE |
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select HAVE_KPROBES |
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select HAVE_KRETPROBES |
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select HAVE_KVM if 64BIT |
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select HAVE_ARCH_TRACEHOOK |
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select INIT_ALL_POSSIBLE |
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select HAVE_IRQ_WORK |
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select HAVE_PERF_EVENTS |
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select ARCH_HAVE_NMI_SAFE_CMPXCHG |
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select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_LZMA |
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select HAVE_KERNEL_LZO |
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select HAVE_KERNEL_XZ |
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select HAVE_ARCH_MUTEX_CPU_RELAX |
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select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 |
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select HAVE_RCU_TABLE_FREE if SMP |
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select ARCH_SAVE_PAGE_KEYS if HIBERNATION |
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select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP select ARCH_DISCARD_MEMBLOCK |
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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 |
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|
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config SCHED_OMIT_FRAME_POINTER |
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def_bool y |
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|
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source "init/Kconfig" |
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source "kernel/Kconfig.freezer" |
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menu "Base setup" comment "Processor type and features" |
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source "kernel/time/Kconfig" |
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config 64BIT |
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def_bool y prompt "64 bit kernel" |
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help |
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Select this option if you have an IBM z/Architecture machine |
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and want to use the 64 bit addressing mode. |
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config 32BIT |
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def_bool y if !64BIT |
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|
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config KTIME_SCALAR def_bool 32BIT |
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config SMP |
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def_bool y prompt "Symmetric multi-processing support" |
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---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. |
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See also the SMP-HOWTO available at <http://www.tldp.org/docs.html#howto>. |
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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 |
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default "32" if !64BIT default "64" if 64BIT |
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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 |
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def_bool y prompt "Support for hot-pluggable CPUs" |
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depends on SMP select HOTPLUG |
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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. |
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config SCHED_MC |
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def_bool n |
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config SCHED_BOOK |
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def_bool y prompt "Book scheduler support" |
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depends on SMP select SCHED_MC |
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help Book scheduler support improves the CPU scheduler's decision making when dealing with machines that have several books. |
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config MATHEMU |
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def_bool y prompt "IEEE FPU emulation" |
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depends on MARCH_G5 help This option is required for IEEE compliant floating point arithmetic |
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on older ESA/390 machines. Say Y unless you know your machine doesn't |
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need this. |
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config COMPAT |
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def_bool y prompt "Kernel support for 31 bit emulation" |
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depends on 64BIT |
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select COMPAT_BINFMT_ELF |
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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". |
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config SYSVIPC_COMPAT |
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def_bool y if COMPAT && SYSVIPC |
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|
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config AUDIT_ARCH |
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def_bool y |
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comment "Code generation options" choice prompt "Processor type" default MARCH_G5 config MARCH_G5 |
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bool "System/390 model G5 and G6" |
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depends on !64BIT |
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help Select this to build a 31 bit kernel that works |
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on all ESA/390 and z/Architecture machines. |
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config MARCH_Z900 |
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bool "IBM zSeries model z800 and z900" |
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help |
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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. |
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config MARCH_Z990 |
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bool "IBM zSeries model z890 and z990" |
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help |
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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. |
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|
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config MARCH_Z9_109 bool "IBM System z9" help |
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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. |
0efa47036 [S390] config opt... |
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|
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config MARCH_Z10 bool "IBM System z10" help |
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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. |
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|
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config MARCH_Z196 |
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bool "IBM zEnterprise 114 and 196" |
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help |
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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. |
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|
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endchoice config PACK_STACK |
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def_bool y prompt "Pack kernel stack" |
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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 |
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def_bool n prompt "Use 8kb for kernel stack instead of 16kb" |
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depends on PACK_STACK && 64BIT && !LOCKDEP |
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help If you say Y here and the compiler supports the -mkernel-backchain |
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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. |
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Say N if you are unsure. |
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config CHECK_STACK |
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def_bool y prompt "Detect kernel stack overflow" |
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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. |
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config WARN_DYNAMIC_STACK |
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def_bool n |
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prompt "Emit compiler warnings for function with dynamic stack usage" |
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help |
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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. |
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Say N if you are unsure. |
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comment "Kernel preemption" source "kernel/Kconfig.preempt" |
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config ARCH_SPARSEMEM_ENABLE def_bool y select SPARSEMEM_VMEMMAP_ENABLE select SPARSEMEM_VMEMMAP |
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select SPARSEMEM_STATIC if !64BIT |
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config ARCH_SPARSEMEM_DEFAULT def_bool y |
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config ARCH_SELECT_MEMORY_MODEL |
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def_bool y |
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|
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config ARCH_ENABLE_MEMORY_HOTPLUG |
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def_bool y if SPARSEMEM |
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|
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config ARCH_ENABLE_MEMORY_HOTREMOVE def_bool y |
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config ARCH_HIBERNATION_POSSIBLE |
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def_bool y if 64BIT |
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|
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source "mm/Kconfig" |
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comment "I/O subsystem configuration" |
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config QDIO |
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def_tristate y prompt "QDIO support" |
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---help--- |
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This driver provides the Queued Direct I/O base support for |
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IBM System z. |
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To compile this driver as a module, choose M here: the module will be called qdio. If unsure, say Y. |
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config CHSC_SCH |
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def_tristate m |
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prompt "Support for CHSC subchannels" |
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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. |
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comment "Misc" |
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config IPL |
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def_bool y prompt "Builtin IPL record support" |
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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 |
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default IPL_VM |
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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" |
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config FORCE_MAX_ZONEORDER int default "9" |
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config PFAULT |
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def_bool y prompt "Pseudo page fault support" |
1da177e4c Linux-2.6.12-rc2 |
408 409 410 411 412 413 414 415 416 417 418 |
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 |
6f9a3c330 [S390] cleanup s3... |
419 420 |
def_bool y prompt "VM shared kernel support" |
1da177e4c Linux-2.6.12-rc2 |
421 422 423 424 |
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. |
9c9c17613 [S390] nss: disab... |
425 426 |
Also if a kernel was IPL'ed from a shared segment the kexec system call will not work. |
1da177e4c Linux-2.6.12-rc2 |
427 428 429 430 |
You should only select this option if you know what you are doing and want to exploit this feature. config CMM |
6f9a3c330 [S390] cleanup s3... |
431 432 |
def_tristate n prompt "Cooperative memory management" |
1da177e4c Linux-2.6.12-rc2 |
433 434 435 436 437 438 439 440 441 |
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. |
1da177e4c Linux-2.6.12-rc2 |
442 |
config CMM_IUCV |
6f9a3c330 [S390] cleanup s3... |
443 444 |
def_bool y prompt "IUCV special message interface to cooperative memory management" |
1da177e4c Linux-2.6.12-rc2 |
445 446 447 448 |
depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) help Select this option to enable the special message interface to the cooperative memory management. |
1da177e4c Linux-2.6.12-rc2 |
449 |
config APPLDATA_BASE |
6f9a3c330 [S390] cleanup s3... |
450 451 |
def_bool n prompt "Linux - VM Monitor Stream, base infrastructure" |
c185b783b [S390] Remove con... |
452 |
depends on PROC_FS |
1da177e4c Linux-2.6.12-rc2 |
453 454 455 456 457 458 459 460 461 462 463 464 465 |
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 |
6f9a3c330 [S390] cleanup s3... |
466 467 |
def_tristate m prompt "Monitor memory management statistics" |
62fb2ba3d [PATCH] appldata_... |
468 |
depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
1da177e4c Linux-2.6.12-rc2 |
469 470 471 472 473 474 475 476 477 478 479 480 481 482 |
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 |
6f9a3c330 [S390] cleanup s3... |
483 484 |
def_tristate m prompt "Monitor OS statistics" |
1da177e4c Linux-2.6.12-rc2 |
485 486 487 488 489 490 491 492 493 494 495 496 497 |
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 |
6f9a3c330 [S390] cleanup s3... |
498 499 |
def_tristate m prompt "Monitor overall network statistics" |
70193af91 [S390] Fix applda... |
500 |
depends on APPLDATA_BASE && NET |
1da177e4c Linux-2.6.12-rc2 |
501 502 503 504 505 506 507 508 509 510 511 |
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. |
61d48c2c3 [S390] Kconfig: u... |
512 |
source kernel/Kconfig.hz |
24bbb1faf [PATCH] s390_hypf... |
513 |
config S390_HYPFS_FS |
6f9a3c330 [S390] cleanup s3... |
514 515 |
def_bool y prompt "s390 hypervisor file system support" |
24bbb1faf [PATCH] s390_hypf... |
516 |
select SYS_HYPERVISOR |
24bbb1faf [PATCH] s390_hypf... |
517 518 519 |
help This is a virtual file system intended to provide accounting information in an s390 hypervisor environment. |
cf13f0eaf [PATCH] kexec: s3... |
520 |
config KEXEC |
6f9a3c330 [S390] cleanup s3... |
521 522 |
def_bool n prompt "kexec system call" |
cf13f0eaf [PATCH] kexec: s3... |
523 524 525 526 |
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. |
60a0c68df [S390] kdump back... |
527 528 529 |
config CRASH_DUMP bool "kernel crash dumps" depends on 64BIT |
96603b505 [S390] Kconfig: S... |
530 |
select KEXEC |
60a0c68df [S390] kdump back... |
531 532 533 534 535 536 |
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 |
411ed3225 [S390] zfcpdump s... |
537 |
config ZFCPDUMP |
6f9a3c330 [S390] cleanup s3... |
538 539 |
def_bool n prompt "zfcpdump support" |
411ed3225 [S390] zfcpdump s... |
540 |
select SMP |
411ed3225 [S390] zfcpdump s... |
541 542 |
help Select this option if you want to build an zfcpdump enabled kernel. |
e403149c9 Kbuild/doc: fix l... |
543 |
Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. |
411ed3225 [S390] zfcpdump s... |
544 |
|
fa5877439 s390: KVM guest: ... |
545 |
config S390_GUEST |
6f9a3c330 [S390] cleanup s3... |
546 547 |
def_bool y prompt "s390 guest support for KVM (EXPERIMENTAL)" |
fa5877439 s390: KVM guest: ... |
548 |
depends on 64BIT && EXPERIMENTAL |
80629b0b0 [S390] kvm-s390: ... |
549 |
select VIRTUALIZATION |
fa5877439 s390: KVM guest: ... |
550 551 |
select VIRTIO select VIRTIO_RING |
faeba830b s390: use virtio_... |
552 |
select VIRTIO_CONSOLE |
fa5877439 s390: KVM guest: ... |
553 |
help |
20766c083 KVM: s390: change... |
554 555 556 557 |
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. |
bcf5cef7d [S390] secure com... |
558 559 |
config SECCOMP |
6f9a3c330 [S390] cleanup s3... |
560 561 |
def_bool y prompt "Enable seccomp to safely compute untrusted bytecode" |
bcf5cef7d [S390] secure com... |
562 |
depends on PROC_FS |
bcf5cef7d [S390] secure com... |
563 564 565 566 567 568 569 570 571 572 573 574 |
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. |
1da177e4c Linux-2.6.12-rc2 |
575 |
endmenu |
155af2f95 [S390] s390: hibe... |
576 577 578 579 580 |
menu "Power Management" source "kernel/power/Kconfig" endmenu |
d5950b435 [NET]: add a top-... |
581 |
source "net/Kconfig" |
1da177e4c Linux-2.6.12-rc2 |
582 |
config PCMCIA |
61d48c2c3 [S390] Kconfig: u... |
583 |
def_bool n |
1da177e4c Linux-2.6.12-rc2 |
584 |
|
61d48c2c3 [S390] Kconfig: u... |
585 586 |
config CCW def_bool y |
1da177e4c Linux-2.6.12-rc2 |
587 |
|
61d48c2c3 [S390] Kconfig: u... |
588 |
source "drivers/Kconfig" |
1da177e4c Linux-2.6.12-rc2 |
589 590 |
source "fs/Kconfig" |
1da177e4c Linux-2.6.12-rc2 |
591 592 593 594 595 596 597 |
source "arch/s390/Kconfig.debug" source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig" |
77b455f1b KVM: s390: add kv... |
598 599 |
source "arch/s390/kvm/Kconfig" |