diff options
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 786 |
1 files changed, 497 insertions, 289 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 2a8af5e1634..bb63499fc5d 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -1,18 +1,8 @@ -# -# For a description of the syntax of this configuration file, -# see Documentation/kbuild/kconfig-language.txt. -# - -config SCHED_MC - def_bool y - depends on SMP - config MMU def_bool y config ZONE_DMA def_bool y - depends on 64BIT config LOCKDEP_SUPPORT def_bool y @@ -30,93 +20,328 @@ config RWSEM_XCHGADD_ALGORITHM def_bool y config ARCH_HAS_ILOG2_U32 - bool - default n + def_bool n config ARCH_HAS_ILOG2_U64 - bool - default n + def_bool n config GENERIC_HWEIGHT def_bool y -config GENERIC_TIME - def_bool y +config GENERIC_BUG + def_bool y if BUG -config GENERIC_TIME_VSYSCALL +config GENERIC_BUG_RELATIVE_POINTERS def_bool y -config GENERIC_CLOCKEVENTS - def_bool y +config ARCH_DMA_ADDR_T_64BIT + def_bool 64BIT -config GENERIC_BUG - bool - depends on BUG - default y +config GENERIC_LOCKBREAK + def_bool y if SMP && PREEMPT -config NO_IOMEM - def_bool y +config PGSTE + def_bool y if KVM -config NO_DMA +config ARCH_SUPPORTS_DEBUG_PAGEALLOC def_bool y -config GENERIC_LOCKBREAK - bool - default y - depends on SMP && PREEMPT +config KEXEC + def_bool y -config PGSTE - bool - default y if KVM +config AUDIT_ARCH + def_bool y -config VIRT_CPU_ACCOUNTING +config NO_IOPORT_MAP def_bool y -mainmenu "Linux Kernel Configuration" +config PCI_QUIRKS + def_bool n config S390 def_bool y - select USE_GENERIC_SMP_HELPERS if SMP - select HAVE_SYSCALL_WRAPPERS + select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS + select ARCH_HAVE_NMI_SAFE_CMPXCHG + 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_TRYLOCK + 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_SPIN_LOCK + select ARCH_INLINE_SPIN_LOCK_BH + select ARCH_INLINE_SPIN_LOCK_IRQ + select ARCH_INLINE_SPIN_LOCK_IRQSAVE + select ARCH_INLINE_SPIN_TRYLOCK + select ARCH_INLINE_SPIN_TRYLOCK_BH + 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_WRITE_LOCK + select ARCH_INLINE_WRITE_LOCK_BH + select ARCH_INLINE_WRITE_LOCK_IRQ + select ARCH_INLINE_WRITE_LOCK_IRQSAVE + select ARCH_INLINE_WRITE_TRYLOCK + select ARCH_INLINE_WRITE_UNLOCK + select ARCH_INLINE_WRITE_UNLOCK_BH + select ARCH_INLINE_WRITE_UNLOCK_IRQ + select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE + select ARCH_SAVE_PAGE_KEYS if HIBERNATION + select ARCH_USE_CMPXCHG_LOCKREF + select ARCH_WANT_IPC_PARSE_VERSION + select BUILDTIME_EXTABLE_SORT + select CLONE_BACKWARDS2 + select GENERIC_CLOCKEVENTS + select GENERIC_CPU_DEVICES if !SMP + select GENERIC_FIND_FIRST_BIT + select GENERIC_SMP_IDLE_THREAD + select GENERIC_TIME_VSYSCALL + select HAVE_ALIGNED_STRUCT_PAGE if SLUB + select HAVE_ARCH_AUDITSYSCALL + select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 + select HAVE_ARCH_SECCOMP_FILTER + select HAVE_ARCH_TRACEHOOK + select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT + select HAVE_BPF_JIT if 64BIT && PACK_STACK + select HAVE_CMPXCHG_DOUBLE + select HAVE_CMPXCHG_LOCAL + select HAVE_C_RECORDMCOUNT + select HAVE_DEBUG_KMEMLEAK + select HAVE_DYNAMIC_FTRACE + select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER - select HAVE_OPROFILE + select HAVE_FUNCTION_TRACE_MCOUNT_TEST + select HAVE_FUTEX_CMPXCHG if FUTEX + select HAVE_KERNEL_BZIP2 + select HAVE_KERNEL_GZIP + select HAVE_KERNEL_LZ4 + select HAVE_KERNEL_LZMA + select HAVE_KERNEL_LZO + select HAVE_KERNEL_XZ select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_KVM if 64BIT - select HAVE_ARCH_TRACEHOOK - select INIT_ALL_POSSIBLE + select HAVE_MEMBLOCK + select HAVE_MEMBLOCK_NODE_MAP + select HAVE_MEMBLOCK_PHYS_MAP + select HAVE_MOD_ARCH_SPECIFIC + select HAVE_OPROFILE + select HAVE_PERF_EVENTS + select HAVE_REGS_AND_STACK_ACCESS_API + select HAVE_SYSCALL_TRACEPOINTS + select HAVE_UID16 if 32BIT + select HAVE_VIRT_CPU_ACCOUNTING + select KTIME_SCALAR if 32BIT + select MODULES_USE_ELF_RELA + select NO_BOOTMEM + select OLD_SIGACTION + select OLD_SIGSUSPEND3 + select SYSCTL_EXCEPTION_TRACE + select TTY + select VIRT_CPU_ACCOUNTING + select VIRT_TO_BUS + +config SCHED_OMIT_FRAME_POINTER + def_bool y source "init/Kconfig" source "kernel/Kconfig.freezer" -menu "Base setup" +menu "Processor type and features" + +config HAVE_MARCH_Z900_FEATURES + def_bool n + +config HAVE_MARCH_Z990_FEATURES + def_bool n + select HAVE_MARCH_Z900_FEATURES + +config HAVE_MARCH_Z9_109_FEATURES + def_bool n + select HAVE_MARCH_Z990_FEATURES + +config HAVE_MARCH_Z10_FEATURES + def_bool n + select HAVE_MARCH_Z9_109_FEATURES + +config HAVE_MARCH_Z196_FEATURES + def_bool n + select HAVE_MARCH_Z10_FEATURES + +config HAVE_MARCH_ZEC12_FEATURES + def_bool n + select HAVE_MARCH_Z196_FEATURES + +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" + select HAVE_MARCH_Z900_FEATURES if 64BIT + 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" + select HAVE_MARCH_Z990_FEATURES if 64BIT + 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" + select HAVE_MARCH_Z9_109_FEATURES if 64BIT + 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" + select HAVE_MARCH_Z10_FEATURES if 64BIT + 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" + select HAVE_MARCH_Z196_FEATURES if 64BIT + 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. + +config MARCH_ZEC12 + bool "IBM zBC12 and zEC12" + select HAVE_MARCH_ZEC12_FEATURES if 64BIT + help + Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and + 2827 series). The kernel will be slightly faster but will not work on + older machines. + +endchoice + +config MARCH_G5_TUNE + def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT + +config MARCH_Z900_TUNE + def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT + +config MARCH_Z990_TUNE + def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT + +config MARCH_Z9_109_TUNE + def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT -comment "Processor type and features" +config MARCH_Z10_TUNE + def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT -source "kernel/time/Kconfig" +config MARCH_Z196_TUNE + def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT + +config MARCH_ZEC12_TUNE + def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT + +choice + prompt "Tune code generation" + default TUNE_DEFAULT + help + Cause the compiler to tune (-mtune) the generated code for a machine. + This will make the code run faster on the selected machine but + somewhat slower on other machines. + This option only changes how the compiler emits instructions, not the + selection of instructions itself, so the resulting kernel will run on + all other machines. + +config TUNE_DEFAULT + bool "Default" + help + Tune the generated code for the target processor for which the kernel + will be compiled. + +config TUNE_G5 + bool "System/390 model G5 and G6" + +config TUNE_Z900 + bool "IBM zSeries model z800 and z900" + +config TUNE_Z990 + bool "IBM zSeries model z890 and z990" + +config TUNE_Z9_109 + bool "IBM System z9" + +config TUNE_Z10 + bool "IBM System z10" + +config TUNE_Z196 + bool "IBM zEnterprise 114 and 196" + +config TUNE_ZEC12 + bool "IBM zBC12 and zEC12" + +endchoice config 64BIT - bool "64 bit kernel" + def_bool y + prompt "64 bit kernel" help - Select this option if you have a 64 bit IBM zSeries machine + Select this option if you have an IBM z/Architecture machine and want to use the 64 bit addressing mode. config 32BIT - bool - default y if !64BIT + def_bool y if !64BIT + +config COMPAT + def_bool y + prompt "Kernel support for 31 bit emulation" + depends on 64BIT + select COMPAT_BINFMT_ELF if BINFMT_ELF + select ARCH_WANT_OLD_COMPAT_IPC + select COMPAT_OLD_SIGACTION + 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 SMP - bool "Symmetric multi-processing support" + 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 + If you say N here, the kernel will run on uni- 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 + uniprocessor machines. On a uniprocessor machine, the kernel will run faster if you say N here. See also the SMP-HOWTO available at @@ -125,128 +350,88 @@ config SMP 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 + int "Maximum number of CPUs (2-256)" + range 2 256 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 + kernel will support. The maximum supported value is 256 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" + def_bool y + prompt "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 SCHED_MC + def_bool n -config COMPAT - bool "Kernel support for 31 bit emulation" - depends on 64BIT - select COMPAT_BINFMT_ELF +config SCHED_BOOK + def_bool y + prompt "Book scheduler support" + depends on SMP + select SCHED_MC 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 - bool - depends on COMPAT && SYSVIPC - default y + Book scheduler support improves the CPU scheduler's decision making + when dealing with machines that have several books. -config AUDIT_ARCH - bool - default y +source kernel/Kconfig.preempt -config S390_SWITCH_AMODE - bool "Switch kernel/user addressing modes" +config MATHEMU + def_bool y + prompt "IEEE FPU emulation" + depends on MARCH_G5 help - This option allows to switch the addressing modes of kernel and user - space. The kernel parameter switch_amode=on will enable this feature, - default is disabled. Enabling this (via kernel parameter) on machines - earlier than IBM System z9-109 EC/BC will reduce system performance. + 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. - Note that this option will also be selected by selecting the execute - protection option below. Enabling the execute protection via the - noexec kernel parameter will also switch the addressing modes, - independent of the switch_amode kernel parameter. +source kernel/Kconfig.hz +endmenu -config S390_EXEC_PROTECT - bool "Data execute protection" - select S390_SWITCH_AMODE - help - This option allows to enable a buffer overflow protection for user - space programs and it also selects the addressing mode option above. - The kernel parameter noexec=on will enable this feature and also - switch the addressing modes, default is disabled. Enabling this (via - kernel parameter) on machines earlier than IBM System z9-109 EC/BC - will reduce system performance. +menu "Memory setup" -comment "Code generation options" +config ARCH_SPARSEMEM_ENABLE + def_bool y + select SPARSEMEM_VMEMMAP_ENABLE + select SPARSEMEM_VMEMMAP + select SPARSEMEM_STATIC if !64BIT -choice - prompt "Processor type" - default MARCH_G5 +config ARCH_SPARSEMEM_DEFAULT + def_bool y -config MARCH_G5 - bool "S/390 model G5 and G6" - depends on !64BIT - help - Select this to build a 31 bit kernel that works - on all S/390 and zSeries machines. +config ARCH_SELECT_MEMORY_MODEL + def_bool y -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 ARCH_ENABLE_MEMORY_HOTPLUG + def_bool y if SPARSEMEM -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. +config ARCH_ENABLE_MEMORY_HOTREMOVE + def_bool y -config MARCH_Z9_109 - bool "IBM System z9" - help - Select this to enable optimizations for IBM System z9-109, IBM - System z9 Enterprise Class (z9 EC), and IBM System z9 Business - Class (z9 BC). The kernel will be slightly faster but will not - work on older machines such as the z990, z890, z900, and z800. +config ARCH_ENABLE_SPLIT_PMD_PTLOCK + def_bool y + depends on 64BIT -config MARCH_Z10 - bool "IBM System z10" - help - Select this to enable optimizations for IBM System z10. The - kernel will be slightly faster but will not work on older - machines such as the z990, z890, z900, z800, z9-109, z9-ec - and z9-bc. +config FORCE_MAX_ZONEORDER + int + default "9" -endchoice +source "mm/Kconfig" config PACK_STACK - bool "Pack kernel 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 @@ -258,20 +443,9 @@ config PACK_STACK Say Y if you are unsure. -config SMALL_STACK - bool "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 - bool "Detect kernel stack overflow" + 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 @@ -294,68 +468,91 @@ config STACK_GUARD 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" +config WARN_DYNAMIC_STACK + def_bool n + prompt "Emit compiler warnings for function with dynamic 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 than CONFIG_WARN_STACK_SIZE. + 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. -config WARN_STACK_SIZE - int "Maximum frame size considered safe (128-2048)" - range 128 2048 - depends on WARN_STACK - default "2048" - help - This allows you to specify the maximum frame size a function may - have without the compiler complaining about it. +endmenu -config ARCH_POPULATES_NODE_MAP - def_bool y +menu "I/O subsystem" -comment "Kernel preemption" +config QDIO + def_tristate y + prompt "QDIO support" + ---help--- + This driver provides the Queued Direct I/O base support for + IBM System z. -source "kernel/Kconfig.preempt" + To compile this driver as a module, choose M here: the + module will be called qdio. -config ARCH_SPARSEMEM_ENABLE - def_bool y - select SPARSEMEM_VMEMMAP_ENABLE - select SPARSEMEM_VMEMMAP - select SPARSEMEM_STATIC if !64BIT + If unsure, say Y. -config ARCH_SPARSEMEM_DEFAULT - def_bool y +menuconfig PCI + bool "PCI support" + default n + depends on 64BIT + select PCI_MSI + help + Enable PCI support. -config ARCH_SELECT_MEMORY_MODEL - def_bool y +if PCI -config ARCH_ENABLE_MEMORY_HOTPLUG - def_bool y - depends on SPARSEMEM +config PCI_NR_FUNCTIONS + int "Maximum number of PCI functions (1-4096)" + range 1 4096 + default "64" + help + This allows you to specify the maximum number of PCI functions which + this kernel will support. -config ARCH_ENABLE_MEMORY_HOTREMOVE - def_bool y +config PCI_NR_MSI + int "Maximum number of MSI interrupts (64-32768)" + range 64 32768 + default "256" + help + This defines the number of virtual interrupts the kernel will + provide for MSI interrupts. If you configure your system to have + too few drivers will fail to allocate MSI interrupts for all + PCI devices. -source "mm/Kconfig" +source "drivers/pci/Kconfig" +source "drivers/pci/pcie/Kconfig" +source "drivers/pci/hotplug/Kconfig" -comment "I/O subsystem configuration" +endif # PCI -config QDIO - tristate "QDIO support" - ---help--- - This driver provides the Queued Direct I/O base support for - IBM System z. +config PCI_DOMAINS + def_bool PCI - To compile this driver as a module, choose M here: the - module will be called qdio. +config HAS_IOMEM + def_bool PCI - If unsure, say Y. +config IOMMU_HELPER + def_bool PCI + +config HAS_DMA + def_bool PCI + select HAVE_DMA_API_DEBUG + +config NEED_SG_DMA_LENGTH + def_bool PCI + +config HAVE_DMA_ATTRS + def_bool PCI + +config NEED_DMA_MAP_STATE + def_bool PCI config CHSC_SCH - tristate "Support for CHSC subchannels" + 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. @@ -370,49 +567,100 @@ config CHSC_SCH If unsure, say N. -comment "Misc" - -config IPL - bool "Builtin IPL record support" +config SCM_BUS + def_bool y + depends on 64BIT + prompt "SCM bus driver" 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. + Bus driver for Storage Class Memory. -choice - prompt "IPL method generated into head.S" - depends on IPL - default IPL_VM +config EADM_SCH + def_tristate m + prompt "Support for EADM subchannels" + depends on SCM_BUS help - Select "tape" if you want to IPL the image from a Tape. + This driver allows usage of EADM subchannels. EADM subchannels act + as a communication vehicle for SCM increments. - Select "vm_reader" if you are running under VM/ESA and want - to IPL the image from the emulated card reader. + To compile this driver as a module, choose M here: the + module will be called eadm_sch. -config IPL_TAPE - bool "tape" +endmenu -config IPL_VM - bool "vm_reader" +menu "Dump support" -endchoice +config CRASH_DUMP + bool "kernel crash dumps" + depends on 64BIT && SMP + 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. + Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. + This option also enables s390 zfcpdump. + See also <file:Documentation/s390/zfcpdump.txt> -source "fs/Kconfig.binfmt" +endmenu -config FORCE_MAX_ZONEORDER - int - default "9" +menu "Executable file formats / Emulations" + +source "fs/Kconfig.binfmt" -config PROCESS_DEBUG - bool "Show crashed user process info" +config SECCOMP + def_bool y + prompt "Enable seccomp to safely compute untrusted bytecode" + depends on PROC_FS 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. + 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" + +config ARCH_HIBERNATION_POSSIBLE + def_bool y if 64BIT + +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" + +menu "Virtualization" config PFAULT - bool "Pseudo page fault support" + 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 @@ -425,6 +673,7 @@ config PFAULT config SHARED_KERNEL bool "VM shared kernel support" + depends on !JUMP_LABEL help Select this option, if you want to share the text segment of the Linux kernel between different VM guests. This reduces memory @@ -435,7 +684,8 @@ config SHARED_KERNEL doing and want to exploit this feature. config CMM - tristate "Cooperative memory management" + 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 @@ -446,29 +696,17 @@ config CMM 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" + 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 PAGE_STATES - bool "Unused page notification" - help - This enables the notification of unused pages to the - hypervisor. The ESSA instruction is used to do the states - changes between a page that has content and the unused state. - config APPLDATA_BASE - bool "Linux - VM Monitor Stream, base infrastructure" + 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 @@ -483,7 +721,8 @@ config APPLDATA_BASE The /proc entries can also be read from, showing the current settings. config APPLDATA_MEM - tristate "Monitor memory management statistics" + 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 @@ -499,7 +738,8 @@ config APPLDATA_MEM appldata_mem.o. config APPLDATA_OS - tristate "Monitor OS statistics" + def_tristate m + prompt "Monitor OS statistics" depends on APPLDATA_BASE help This provides OS related data to the Linux - VM Monitor Stream, like @@ -513,7 +753,8 @@ config APPLDATA_OS appldata_os.o. config APPLDATA_NET_SUM - tristate "Monitor overall network statistics" + 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, @@ -527,62 +768,29 @@ config APPLDATA_NET_SUM This can also be compiled as a module, which will be called appldata_net_sum.o. -source kernel/Kconfig.hz - config S390_HYPFS_FS - bool "s390 hypervisor file system support" + def_bool y + prompt "s390 hypervisor file system support" select SYS_HYPERVISOR - default y help This is a virtual file system intended to provide accounting information in an s390 hypervisor environment. -config KEXEC - bool "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 ZFCPDUMP - bool "zfcpdump support" - select SMP - default n - 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. +source "arch/s390/kvm/Kconfig" config S390_GUEST -bool "s390 guest support for KVM (EXPERIMENTAL)" - depends on 64BIT && EXPERIMENTAL + def_bool y + prompt "s390 support for virtio devices" + depends on 64BIT + select TTY + 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. -endmenu + Enabling this option adds support for virtio based paravirtual device + drivers on s390. -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" + Select this option if you want to run the kernel as a guest under + the KVM hypervisor. -source "arch/s390/kvm/Kconfig" +endmenu |