Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/arch/s390/Kconfig

  1 config MMU
  2         def_bool y
  3 
  4 config ZONE_DMA
  5         def_bool y
  6 
  7 config LOCKDEP_SUPPORT
  8         def_bool y
  9 
 10 config STACKTRACE_SUPPORT
 11         def_bool y
 12 
 13 config HAVE_LATENCYTOP_SUPPORT
 14         def_bool y
 15 
 16 config RWSEM_GENERIC_SPINLOCK
 17         bool
 18 
 19 config RWSEM_XCHGADD_ALGORITHM
 20         def_bool y
 21 
 22 config ARCH_HAS_ILOG2_U32
 23         def_bool n
 24 
 25 config ARCH_HAS_ILOG2_U64
 26         def_bool n
 27 
 28 config GENERIC_HWEIGHT
 29         def_bool y
 30 
 31 config GENERIC_BUG
 32         def_bool y if BUG
 33 
 34 config GENERIC_BUG_RELATIVE_POINTERS
 35         def_bool y
 36 
 37 config ARCH_DMA_ADDR_T_64BIT
 38         def_bool 64BIT
 39 
 40 config GENERIC_LOCKBREAK
 41         def_bool y if SMP && PREEMPT
 42 
 43 config PGSTE
 44         def_bool y if KVM
 45 
 46 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 47         def_bool y
 48 
 49 config KEXEC
 50         def_bool y
 51 
 52 config AUDIT_ARCH
 53         def_bool y
 54 
 55 config NO_IOPORT_MAP
 56         def_bool y
 57 
 58 config PCI_QUIRKS
 59         def_bool n
 60 
 61 config ARCH_SUPPORTS_UPROBES
 62         def_bool 64BIT
 63 
 64 config S390
 65         def_bool y
 66         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 67         select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 68         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 69         select ARCH_INLINE_READ_LOCK
 70         select ARCH_INLINE_READ_LOCK_BH
 71         select ARCH_INLINE_READ_LOCK_IRQ
 72         select ARCH_INLINE_READ_LOCK_IRQSAVE
 73         select ARCH_INLINE_READ_TRYLOCK
 74         select ARCH_INLINE_READ_UNLOCK
 75         select ARCH_INLINE_READ_UNLOCK_BH
 76         select ARCH_INLINE_READ_UNLOCK_IRQ
 77         select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
 78         select ARCH_INLINE_SPIN_LOCK
 79         select ARCH_INLINE_SPIN_LOCK_BH
 80         select ARCH_INLINE_SPIN_LOCK_IRQ
 81         select ARCH_INLINE_SPIN_LOCK_IRQSAVE
 82         select ARCH_INLINE_SPIN_TRYLOCK
 83         select ARCH_INLINE_SPIN_TRYLOCK_BH
 84         select ARCH_INLINE_SPIN_UNLOCK
 85         select ARCH_INLINE_SPIN_UNLOCK_BH
 86         select ARCH_INLINE_SPIN_UNLOCK_IRQ
 87         select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
 88         select ARCH_INLINE_WRITE_LOCK
 89         select ARCH_INLINE_WRITE_LOCK_BH
 90         select ARCH_INLINE_WRITE_LOCK_IRQ
 91         select ARCH_INLINE_WRITE_LOCK_IRQSAVE
 92         select ARCH_INLINE_WRITE_TRYLOCK
 93         select ARCH_INLINE_WRITE_UNLOCK
 94         select ARCH_INLINE_WRITE_UNLOCK_BH
 95         select ARCH_INLINE_WRITE_UNLOCK_IRQ
 96         select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
 97         select ARCH_SAVE_PAGE_KEYS if HIBERNATION
 98         select ARCH_SUPPORTS_ATOMIC_RMW
 99         select ARCH_USE_CMPXCHG_LOCKREF
100         select ARCH_WANT_IPC_PARSE_VERSION
101         select BUILDTIME_EXTABLE_SORT
102         select CLONE_BACKWARDS2
103         select DYNAMIC_FTRACE if FUNCTION_TRACER
104         select GENERIC_CLOCKEVENTS
105         select GENERIC_CPU_DEVICES if !SMP
106         select GENERIC_FIND_FIRST_BIT
107         select GENERIC_SMP_IDLE_THREAD
108         select GENERIC_TIME_VSYSCALL
109         select HAVE_ALIGNED_STRUCT_PAGE if SLUB
110         select HAVE_ARCH_AUDITSYSCALL
111         select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
112         select HAVE_ARCH_SECCOMP_FILTER
113         select HAVE_ARCH_TRACEHOOK
114         select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
115         select HAVE_BPF_JIT if 64BIT && PACK_STACK
116         select HAVE_CMPXCHG_DOUBLE
117         select HAVE_CMPXCHG_LOCAL
118         select HAVE_C_RECORDMCOUNT
119         select HAVE_DEBUG_KMEMLEAK
120         select HAVE_DYNAMIC_FTRACE if 64BIT
121         select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT
122         select HAVE_FTRACE_MCOUNT_RECORD
123         select HAVE_FUNCTION_GRAPH_TRACER if 64BIT
124         select HAVE_FUNCTION_TRACER if 64BIT
125         select HAVE_FUTEX_CMPXCHG if FUTEX
126         select HAVE_KERNEL_BZIP2
127         select HAVE_KERNEL_GZIP
128         select HAVE_KERNEL_LZ4
129         select HAVE_KERNEL_LZMA
130         select HAVE_KERNEL_LZO
131         select HAVE_KERNEL_XZ
132         select HAVE_KPROBES
133         select HAVE_KRETPROBES
134         select HAVE_KVM if 64BIT
135         select HAVE_MEMBLOCK
136         select HAVE_MEMBLOCK_NODE_MAP
137         select HAVE_MEMBLOCK_PHYS_MAP
138         select HAVE_MOD_ARCH_SPECIFIC
139         select HAVE_OPROFILE
140         select HAVE_PERF_EVENTS
141         select HAVE_REGS_AND_STACK_ACCESS_API
142         select HAVE_SYSCALL_TRACEPOINTS
143         select HAVE_UID16 if 32BIT
144         select HAVE_VIRT_CPU_ACCOUNTING
145         select MODULES_USE_ELF_RELA
146         select NO_BOOTMEM
147         select OLD_SIGACTION
148         select OLD_SIGSUSPEND3
149         select SYSCTL_EXCEPTION_TRACE
150         select TTY
151         select VIRT_CPU_ACCOUNTING
152         select VIRT_TO_BUS
153         select ARCH_HAS_SG_CHAIN
154 
155 config SCHED_OMIT_FRAME_POINTER
156         def_bool y
157 
158 source "init/Kconfig"
159 
160 source "kernel/Kconfig.freezer"
161 
162 menu "Processor type and features"
163 
164 config HAVE_MARCH_Z900_FEATURES
165         def_bool n
166 
167 config HAVE_MARCH_Z990_FEATURES
168         def_bool n
169         select HAVE_MARCH_Z900_FEATURES
170 
171 config HAVE_MARCH_Z9_109_FEATURES
172         def_bool n
173         select HAVE_MARCH_Z990_FEATURES
174 
175 config HAVE_MARCH_Z10_FEATURES
176         def_bool n
177         select HAVE_MARCH_Z9_109_FEATURES
178 
179 config HAVE_MARCH_Z196_FEATURES
180         def_bool n
181         select HAVE_MARCH_Z10_FEATURES
182 
183 config HAVE_MARCH_ZEC12_FEATURES
184         def_bool n
185         select HAVE_MARCH_Z196_FEATURES
186 
187 choice
188         prompt "Processor type"
189         default MARCH_G5
190 
191 config MARCH_G5
192         bool "System/390 model G5 and G6"
193         depends on !64BIT
194         help
195           Select this to build a 31 bit kernel that works
196           on all ESA/390 and z/Architecture machines.
197 
198 config MARCH_Z900
199         bool "IBM zSeries model z800 and z900"
200         select HAVE_MARCH_Z900_FEATURES if 64BIT
201         help
202           Select this to enable optimizations for model z800/z900 (2064 and
203           2066 series). This will enable some optimizations that are not
204           available on older ESA/390 (31 Bit) only CPUs.
205 
206 config MARCH_Z990
207         bool "IBM zSeries model z890 and z990"
208         select HAVE_MARCH_Z990_FEATURES if 64BIT
209         help
210           Select this to enable optimizations for model z890/z990 (2084 and
211           2086 series). The kernel will be slightly faster but will not work
212           on older machines.
213 
214 config MARCH_Z9_109
215         bool "IBM System z9"
216         select HAVE_MARCH_Z9_109_FEATURES if 64BIT
217         help
218           Select this to enable optimizations for IBM System z9 (2094 and
219           2096 series). The kernel will be slightly faster but will not work
220           on older machines.
221 
222 config MARCH_Z10
223         bool "IBM System z10"
224         select HAVE_MARCH_Z10_FEATURES if 64BIT
225         help
226           Select this to enable optimizations for IBM System z10 (2097 and
227           2098 series). The kernel will be slightly faster but will not work
228           on older machines.
229 
230 config MARCH_Z196
231         bool "IBM zEnterprise 114 and 196"
232         select HAVE_MARCH_Z196_FEATURES if 64BIT
233         help
234           Select this to enable optimizations for IBM zEnterprise 114 and 196
235           (2818 and 2817 series). The kernel will be slightly faster but will
236           not work on older machines.
237 
238 config MARCH_ZEC12
239         bool "IBM zBC12 and zEC12"
240         select HAVE_MARCH_ZEC12_FEATURES if 64BIT
241         help
242           Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
243           2827 series). The kernel will be slightly faster but will not work on
244           older machines.
245 
246 endchoice
247 
248 config MARCH_G5_TUNE
249         def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT
250 
251 config MARCH_Z900_TUNE
252         def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
253 
254 config MARCH_Z990_TUNE
255         def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT
256 
257 config MARCH_Z9_109_TUNE
258         def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT
259 
260 config MARCH_Z10_TUNE
261         def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
262 
263 config MARCH_Z196_TUNE
264         def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
265 
266 config MARCH_ZEC12_TUNE
267         def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
268 
269 choice
270         prompt "Tune code generation"
271         default TUNE_DEFAULT
272         help
273           Cause the compiler to tune (-mtune) the generated code for a machine.
274           This will make the code run faster on the selected machine but
275           somewhat slower on other machines.
276           This option only changes how the compiler emits instructions, not the
277           selection of instructions itself, so the resulting kernel will run on
278           all other machines.
279 
280 config TUNE_DEFAULT
281         bool "Default"
282         help
283           Tune the generated code for the target processor for which the kernel
284           will be compiled.
285 
286 config TUNE_G5
287         bool "System/390 model G5 and G6"
288 
289 config TUNE_Z900
290         bool "IBM zSeries model z800 and z900"
291 
292 config TUNE_Z990
293         bool "IBM zSeries model z890 and z990"
294 
295 config TUNE_Z9_109
296         bool "IBM System z9"
297 
298 config TUNE_Z10
299         bool "IBM System z10"
300 
301 config TUNE_Z196
302         bool "IBM zEnterprise 114 and 196"
303 
304 config TUNE_ZEC12
305         bool "IBM zBC12 and zEC12"
306 
307 endchoice
308 
309 config 64BIT
310         def_bool y
311         prompt "64 bit kernel"
312         help
313           Select this option if you have an IBM z/Architecture machine
314           and want to use the 64 bit addressing mode.
315 
316 config 32BIT
317         def_bool y if !64BIT
318 
319 config COMPAT
320         def_bool y
321         prompt "Kernel support for 31 bit emulation"
322         depends on 64BIT
323         select COMPAT_BINFMT_ELF if BINFMT_ELF
324         select ARCH_WANT_OLD_COMPAT_IPC
325         select COMPAT_OLD_SIGACTION
326         help
327           Select this option if you want to enable your system kernel to
328           handle system-calls from ELF binaries for 31 bit ESA.  This option
329           (and some other stuff like libraries and such) is needed for
330           executing 31 bit applications.  It is safe to say "Y".
331 
332 config SYSVIPC_COMPAT
333         def_bool y if COMPAT && SYSVIPC
334 
335 config KEYS_COMPAT
336         def_bool y if COMPAT && KEYS
337 
338 config SMP
339         def_bool y
340         prompt "Symmetric multi-processing support"
341         ---help---
342           This enables support for systems with more than one CPU. If you have
343           a system with only one CPU, like most personal computers, say N. If
344           you have a system with more than one CPU, say Y.
345 
346           If you say N here, the kernel will run on uni- and multiprocessor
347           machines, but will use only one CPU of a multiprocessor machine. If
348           you say Y here, the kernel will run on many, but not all,
349           uniprocessor machines. On a uniprocessor machine, the kernel
350           will run faster if you say N here.
351 
352           See also the SMP-HOWTO available at
353           <http://www.tldp.org/docs.html#howto>.
354 
355           Even if you don't know what to do here, say Y.
356 
357 config NR_CPUS
358         int "Maximum number of CPUs (2-256)"
359         range 2 256
360         depends on SMP
361         default "32" if !64BIT
362         default "64" if 64BIT
363         help
364           This allows you to specify the maximum number of CPUs which this
365           kernel will support. The maximum supported value is 256 and the
366           minimum value which makes sense is 2.
367 
368           This is purely to save memory - each supported CPU adds
369           approximately sixteen kilobytes to the kernel image.
370 
371 config HOTPLUG_CPU
372         def_bool y
373         prompt "Support for hot-pluggable CPUs"
374         depends on SMP
375         help
376           Say Y here to be able to turn CPUs off and on. CPUs
377           can be controlled through /sys/devices/system/cpu/cpu#.
378           Say N if you want to disable CPU hotplug.
379 
380 config SCHED_MC
381         def_bool n
382 
383 config SCHED_BOOK
384         def_bool y
385         prompt "Book scheduler support"
386         depends on SMP
387         select SCHED_MC
388         help
389           Book scheduler support improves the CPU scheduler's decision making
390           when dealing with machines that have several books.
391 
392 source kernel/Kconfig.preempt
393 
394 config MATHEMU
395         def_bool y
396         prompt "IEEE FPU emulation"
397         depends on MARCH_G5
398         help
399           This option is required for IEEE compliant floating point arithmetic
400           on older ESA/390 machines. Say Y unless you know your machine doesn't
401           need this.
402 
403 source kernel/Kconfig.hz
404 
405 endmenu
406 
407 menu "Memory setup"
408 
409 config ARCH_SPARSEMEM_ENABLE
410         def_bool y
411         select SPARSEMEM_VMEMMAP_ENABLE
412         select SPARSEMEM_VMEMMAP
413         select SPARSEMEM_STATIC if !64BIT
414 
415 config ARCH_SPARSEMEM_DEFAULT
416         def_bool y
417 
418 config ARCH_SELECT_MEMORY_MODEL
419         def_bool y
420 
421 config ARCH_ENABLE_MEMORY_HOTPLUG
422         def_bool y if SPARSEMEM
423 
424 config ARCH_ENABLE_MEMORY_HOTREMOVE
425         def_bool y
426 
427 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
428         def_bool y
429         depends on 64BIT
430 
431 config FORCE_MAX_ZONEORDER
432         int
433         default "9"
434 
435 source "mm/Kconfig"
436 
437 config PACK_STACK
438         def_bool y
439         prompt "Pack kernel stack"
440         help
441           This option enables the compiler option -mkernel-backchain if it
442           is available. If the option is available the compiler supports
443           the new stack layout which dramatically reduces the minimum stack
444           frame size. With an old compiler a non-leaf function needs a
445           minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
446           -mkernel-backchain the minimum size drops to 16 byte on 31 bit
447           and 24 byte on 64 bit.
448 
449           Say Y if you are unsure.
450 
451 config CHECK_STACK
452         def_bool y
453         prompt "Detect kernel stack overflow"
454         help
455           This option enables the compiler option -mstack-guard and
456           -mstack-size if they are available. If the compiler supports them
457           it will emit additional code to each function prolog to trigger
458           an illegal operation if the kernel stack is about to overflow.
459 
460           Say N if you are unsure.
461 
462 config STACK_GUARD
463         int "Size of the guard area (128-1024)"
464         range 128 1024
465         depends on CHECK_STACK
466         default "256"
467         help
468           This allows you to specify the size of the guard area at the lower
469           end of the kernel stack. If the kernel stack points into the guard
470           area on function entry an illegal operation is triggered. The size
471           needs to be a power of 2. Please keep in mind that the size of an
472           interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
473           The minimum size for the stack guard should be 256 for 31 bit and
474           512 for 64 bit.
475 
476 config WARN_DYNAMIC_STACK
477         def_bool n
478         prompt "Emit compiler warnings for function with dynamic stack usage"
479         help
480           This option enables the compiler option -mwarn-dynamicstack. If the
481           compiler supports this options generates warnings for functions
482           that dynamically allocate stack space using alloca.
483 
484           Say N if you are unsure.
485 
486 endmenu
487 
488 menu "I/O subsystem"
489 
490 config QDIO
491         def_tristate y
492         prompt "QDIO support"
493         ---help---
494           This driver provides the Queued Direct I/O base support for
495           IBM System z.
496 
497           To compile this driver as a module, choose M here: the
498           module will be called qdio.
499 
500           If unsure, say Y.
501 
502 menuconfig PCI
503         bool "PCI support"
504         depends on 64BIT
505         select HAVE_DMA_ATTRS
506         select PCI_MSI
507         help
508           Enable PCI support.
509 
510 if PCI
511 
512 config PCI_NR_FUNCTIONS
513         int "Maximum number of PCI functions (1-4096)"
514         range 1 4096
515         default "64"
516         help
517           This allows you to specify the maximum number of PCI functions which
518           this kernel will support.
519 
520 config PCI_NR_MSI
521         int "Maximum number of MSI interrupts (64-32768)"
522         range 64 32768
523         default "256"
524         help
525           This defines the number of virtual interrupts the kernel will
526           provide for MSI interrupts. If you configure your system to have
527           too few drivers will fail to allocate MSI interrupts for all
528           PCI devices.
529 
530 source "drivers/pci/Kconfig"
531 source "drivers/pci/pcie/Kconfig"
532 source "drivers/pci/hotplug/Kconfig"
533 
534 endif   # PCI
535 
536 config PCI_DOMAINS
537         def_bool PCI
538 
539 config HAS_IOMEM
540         def_bool PCI
541 
542 config IOMMU_HELPER
543         def_bool PCI
544 
545 config HAS_DMA
546         def_bool PCI
547         select HAVE_DMA_API_DEBUG
548 
549 config NEED_SG_DMA_LENGTH
550         def_bool PCI
551 
552 config NEED_DMA_MAP_STATE
553         def_bool PCI
554 
555 config CHSC_SCH
556         def_tristate m
557         prompt "Support for CHSC subchannels"
558         help
559           This driver allows usage of CHSC subchannels. A CHSC subchannel
560           is usually present on LPAR only.
561           The driver creates a device /dev/chsc, which may be used to
562           obtain I/O configuration information about the machine and
563           to issue asynchronous chsc commands (DANGEROUS).
564           You will usually only want to use this interface on a special
565           LPAR designated for system management.
566 
567           To compile this driver as a module, choose M here: the
568           module will be called chsc_sch.
569 
570           If unsure, say N.
571 
572 config SCM_BUS
573         def_bool y
574         depends on 64BIT
575         prompt "SCM bus driver"
576         help
577           Bus driver for Storage Class Memory.
578 
579 config EADM_SCH
580         def_tristate m
581         prompt "Support for EADM subchannels"
582         depends on SCM_BUS
583         help
584           This driver allows usage of EADM subchannels. EADM subchannels act
585           as a communication vehicle for SCM increments.
586 
587           To compile this driver as a module, choose M here: the
588           module will be called eadm_sch.
589 
590 endmenu
591 
592 menu "Dump support"
593 
594 config CRASH_DUMP
595         bool "kernel crash dumps"
596         depends on 64BIT && SMP
597         select KEXEC
598         help
599           Generate crash dump after being started by kexec.
600           Crash dump kernels are loaded in the main kernel with kexec-tools
601           into a specially reserved region and then later executed after
602           a crash by kdump/kexec.
603           Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
604           This option also enables s390 zfcpdump.
605           See also <file:Documentation/s390/zfcpdump.txt>
606 
607 endmenu
608 
609 menu "Executable file formats / Emulations"
610 
611 source "fs/Kconfig.binfmt"
612 
613 config SECCOMP
614         def_bool y
615         prompt "Enable seccomp to safely compute untrusted bytecode"
616         depends on PROC_FS
617         help
618           This kernel feature is useful for number crunching applications
619           that may need to compute untrusted bytecode during their
620           execution. By using pipes or other transports made available to
621           the process as file descriptors supporting the read/write
622           syscalls, it's possible to isolate those applications in
623           their own address space using seccomp. Once seccomp is
624           enabled via /proc/<pid>/seccomp, it cannot be disabled
625           and the task is only allowed to execute a few safe syscalls
626           defined by each seccomp mode.
627 
628           If unsure, say Y.
629 
630 endmenu
631 
632 menu "Power Management"
633 
634 config ARCH_HIBERNATION_POSSIBLE
635         def_bool y if 64BIT
636 
637 source "kernel/power/Kconfig"
638 
639 endmenu
640 
641 source "net/Kconfig"
642 
643 config PCMCIA
644         def_bool n
645 
646 config CCW
647         def_bool y
648 
649 source "drivers/Kconfig"
650 
651 source "fs/Kconfig"
652 
653 source "arch/s390/Kconfig.debug"
654 
655 source "security/Kconfig"
656 
657 source "crypto/Kconfig"
658 
659 source "lib/Kconfig"
660 
661 menu "Virtualization"
662 
663 config PFAULT
664         def_bool y
665         prompt "Pseudo page fault support"
666         help
667           Select this option, if you want to use PFAULT pseudo page fault
668           handling under VM. If running native or in LPAR, this option
669           has no effect. If your VM does not support PFAULT, PAGEEX
670           pseudo page fault handling will be used.
671           Note that VM 4.2 supports PFAULT but has a bug in its
672           implementation that causes some problems.
673           Everybody who wants to run Linux under VM != VM4.2 should select
674           this option.
675 
676 config SHARED_KERNEL
677         bool "VM shared kernel support"
678         depends on !JUMP_LABEL
679         help
680           Select this option, if you want to share the text segment of the
681           Linux kernel between different VM guests. This reduces memory
682           usage with lots of guests but greatly increases kernel size.
683           Also if a kernel was IPL'ed from a shared segment the kexec system
684           call will not work.
685           You should only select this option if you know what you are
686           doing and want to exploit this feature.
687 
688 config CMM
689         def_tristate n
690         prompt "Cooperative memory management"
691         help
692           Select this option, if you want to enable the kernel interface
693           to reduce the memory size of the system. This is accomplished
694           by allocating pages of memory and put them "on hold". This only
695           makes sense for a system running under VM where the unused pages
696           will be reused by VM for other guest systems. The interface
697           allows an external monitor to balance memory of many systems.
698           Everybody who wants to run Linux under VM should select this
699           option.
700 
701 config CMM_IUCV
702         def_bool y
703         prompt "IUCV special message interface to cooperative memory management"
704         depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
705         help
706           Select this option to enable the special message interface to
707           the cooperative memory management.
708 
709 config APPLDATA_BASE
710         def_bool n
711         prompt "Linux - VM Monitor Stream, base infrastructure"
712         depends on PROC_FS
713         help
714           This provides a kernel interface for creating and updating z/VM APPLDATA
715           monitor records. The monitor records are updated at certain time
716           intervals, once the timer is started.
717           Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
718           i.e. enables or disables monitoring on the Linux side.
719           A custom interval value (in seconds) can be written to
720           /proc/appldata/interval.
721 
722           Defaults are 60 seconds interval and timer off.
723           The /proc entries can also be read from, showing the current settings.
724 
725 config APPLDATA_MEM
726         def_tristate m
727         prompt "Monitor memory management statistics"
728         depends on APPLDATA_BASE && VM_EVENT_COUNTERS
729         help
730           This provides memory management related data to the Linux - VM Monitor
731           Stream, like paging/swapping rate, memory utilisation, etc.
732           Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
733           APPLDATA monitor record, i.e. enables or disables monitoring this record
734           on the z/VM side.
735 
736           Default is disabled.
737           The /proc entry can also be read from, showing the current settings.
738 
739           This can also be compiled as a module, which will be called
740           appldata_mem.o.
741 
742 config APPLDATA_OS
743         def_tristate m
744         prompt "Monitor OS statistics"
745         depends on APPLDATA_BASE
746         help
747           This provides OS related data to the Linux - VM Monitor Stream, like
748           CPU utilisation, etc.
749           Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
750           APPLDATA monitor record, i.e. enables or disables monitoring this record
751           on the z/VM side.
752 
753           Default is disabled.
754           This can also be compiled as a module, which will be called
755           appldata_os.o.
756 
757 config APPLDATA_NET_SUM
758         def_tristate m
759         prompt "Monitor overall network statistics"
760         depends on APPLDATA_BASE && NET
761         help
762           This provides network related data to the Linux - VM Monitor Stream,
763           currently there is only a total sum of network I/O statistics, no
764           per-interface data.
765           Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
766           APPLDATA monitor record, i.e. enables or disables monitoring this record
767           on the z/VM side.
768 
769           Default is disabled.
770           This can also be compiled as a module, which will be called
771           appldata_net_sum.o.
772 
773 config S390_HYPFS_FS
774         def_bool y
775         prompt "s390 hypervisor file system support"
776         select SYS_HYPERVISOR
777         help
778           This is a virtual file system intended to provide accounting
779           information in an s390 hypervisor environment.
780 
781 source "arch/s390/kvm/Kconfig"
782 
783 config S390_GUEST
784         def_bool y
785         prompt "s390 support for virtio devices"
786         depends on 64BIT
787         select TTY
788         select VIRTUALIZATION
789         select VIRTIO
790         select VIRTIO_CONSOLE
791         help
792           Enabling this option adds support for virtio based paravirtual device
793           drivers on s390.
794 
795           Select this option if you want to run the kernel as a guest under
796           the KVM hypervisor.
797 
798 endmenu

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