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1da177e4 1config MMU
61d48c2c 2 def_bool y
1da177e4 3
66701b14 4config ZONE_DMA
69dbb2f7 5 def_bool y
66701b14 6
2b105ff9 7config LOCKDEP_SUPPORT
61d48c2c 8 def_bool y
2b105ff9 9
5bdc9b44 10config STACKTRACE_SUPPORT
61d48c2c 11 def_bool y
5bdc9b44 12
a3afe70b
HC
13config HAVE_LATENCYTOP_SUPPORT
14 def_bool y
15
1da177e4
LT
16config RWSEM_GENERIC_SPINLOCK
17 bool
18
19config RWSEM_XCHGADD_ALGORITHM
61d48c2c 20 def_bool y
1da177e4 21
f0d1b0b3 22config ARCH_HAS_ILOG2_U32
6f9a3c33 23 def_bool n
f0d1b0b3
DH
24
25config ARCH_HAS_ILOG2_U64
6f9a3c33 26 def_bool n
f0d1b0b3 27
7e33db4e 28config GENERIC_HWEIGHT
61d48c2c 29 def_bool y
7e33db4e 30
c0007f1a 31config GENERIC_BUG
6f9a3c33 32 def_bool y if BUG
c0007f1a 33
52499f40
HC
34config GENERIC_BUG_RELATIVE_POINTERS
35 def_bool y
36
eca577ef
FT
37config ARCH_DMA_ADDR_T_64BIT
38 def_bool 64BIT
39
b6b40c53 40config GENERIC_LOCKBREAK
6f9a3c33 41 def_bool y if SMP && PREEMPT
b6b40c53 42
402b0862 43config PGSTE
6f9a3c33 44 def_bool y if KVM
402b0862 45
6a11f75b
AM
46config ARCH_SUPPORTS_DEBUG_PAGEALLOC
47 def_bool y
48
843c48fd
JG
49config KEXEC
50 def_bool y
51
52config AUDIT_ARCH
53 def_bool y
54
c8717a3d
JG
55config NO_IOPORT
56 def_bool y
57
58config PCI_QUIRKS
59 def_bool n
60
347a8dc3 61config S390
61d48c2c 62 def_bool y
ca9fc75a 63 select USE_GENERIC_SMP_HELPERS if SMP
5d3b56f9 64 select GENERIC_CPU_DEVICES if !SMP
ed6bb619 65 select HAVE_SYSCALL_WRAPPERS
5d360a75 66 select HAVE_FUNCTION_TRACER
8b4488f8 67 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
dfd9f7ab 68 select HAVE_FTRACE_MCOUNT_RECORD
b25c477b 69 select HAVE_C_RECORDMCOUNT
66700001 70 select HAVE_SYSCALL_TRACEPOINTS
7ac57a89 71 select SYSCTL_EXCEPTION_TRACE
dfd9f7ab 72 select HAVE_DYNAMIC_FTRACE
88dbd203 73 select HAVE_FUNCTION_GRAPH_TRACER
952974ac 74 select HAVE_REGS_AND_STACK_ACCESS_API
42d4b839 75 select HAVE_OPROFILE
3f550096 76 select HAVE_KPROBES
9edddaa2 77 select HAVE_KRETPROBES
77b455f1 78 select HAVE_KVM if 64BIT
753c4dd6 79 select HAVE_ARCH_TRACEHOOK
98a79d6a 80 select INIT_ALL_POSSIBLE
e360adbe 81 select HAVE_IRQ_WORK
cdd6c482 82 select HAVE_PERF_EVENTS
df013ffb 83 select ARCH_HAVE_NMI_SAFE_CMPXCHG
b69ec42b 84 select HAVE_DEBUG_KMEMLEAK
1844c9bc
MS
85 select HAVE_KERNEL_GZIP
86 select HAVE_KERNEL_BZIP2
87 select HAVE_KERNEL_LZMA
cdf56649 88 select HAVE_KERNEL_LZO
d7b081ac 89 select HAVE_KERNEL_XZ
34b133f8 90 select HAVE_ARCH_MUTEX_CPU_RELAX
5373db88 91 select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
c10302ef 92 select HAVE_BPF_JIT if 64BIT && PACK_STACK
85055dd8 93 select ARCH_SAVE_PAGE_KEYS if HIBERNATION
7463449b 94 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
ff38df37
TH
95 select HAVE_MEMBLOCK
96 select HAVE_MEMBLOCK_NODE_MAP
2e30db95 97 select HAVE_CMPXCHG_LOCAL
b1d6b40c 98 select HAVE_CMPXCHG_DOUBLE
4bffbb34 99 select HAVE_ALIGNED_STRUCT_PAGE if SLUB
b952741c
FW
100 select HAVE_VIRT_CPU_ACCOUNTING
101 select VIRT_CPU_ACCOUNTING
ff38df37 102 select ARCH_DISCARD_MEMBLOCK
3193a98d 103 select BUILDTIME_EXTABLE_SORT
6beb0009
TG
104 select ARCH_INLINE_SPIN_TRYLOCK
105 select ARCH_INLINE_SPIN_TRYLOCK_BH
106 select ARCH_INLINE_SPIN_LOCK
107 select ARCH_INLINE_SPIN_LOCK_BH
108 select ARCH_INLINE_SPIN_LOCK_IRQ
109 select ARCH_INLINE_SPIN_LOCK_IRQSAVE
110 select ARCH_INLINE_SPIN_UNLOCK
111 select ARCH_INLINE_SPIN_UNLOCK_BH
112 select ARCH_INLINE_SPIN_UNLOCK_IRQ
113 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
114 select ARCH_INLINE_READ_TRYLOCK
115 select ARCH_INLINE_READ_LOCK
116 select ARCH_INLINE_READ_LOCK_BH
117 select ARCH_INLINE_READ_LOCK_IRQ
118 select ARCH_INLINE_READ_LOCK_IRQSAVE
119 select ARCH_INLINE_READ_UNLOCK
120 select ARCH_INLINE_READ_UNLOCK_BH
121 select ARCH_INLINE_READ_UNLOCK_IRQ
122 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
123 select ARCH_INLINE_WRITE_TRYLOCK
124 select ARCH_INLINE_WRITE_LOCK
125 select ARCH_INLINE_WRITE_LOCK_BH
126 select ARCH_INLINE_WRITE_LOCK_IRQ
127 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
128 select ARCH_INLINE_WRITE_UNLOCK
129 select ARCH_INLINE_WRITE_UNLOCK_BH
130 select ARCH_INLINE_WRITE_UNLOCK_IRQ
131 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
af1839eb 132 select HAVE_UID16 if 32BIT
c1d7e01d 133 select ARCH_WANT_IPC_PARSE_VERSION
0f58aac9 134 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
e80e7813 135 select GENERIC_SMP_IDLE_THREAD
70639421 136 select GENERIC_TIME_VSYSCALL_OLD
a6527b92
AMG
137 select GENERIC_CLOCKEVENTS
138 select KTIME_SCALAR if 32BIT
c63cb468 139 select HAVE_ARCH_SECCOMP_FILTER
f9a7e025 140 select GENERIC_KERNEL_THREAD
786d35d4
DH
141 select HAVE_MOD_ARCH_SPECIFIC
142 select MODULES_USE_ELF_RELA
1da177e4 143
fca3e357 144config SCHED_OMIT_FRAME_POINTER
6f9a3c33 145 def_bool y
fca3e357 146
1da177e4
LT
147source "init/Kconfig"
148
dc52ddc0
MH
149source "kernel/Kconfig.freezer"
150
843c48fd
JG
151menu "Processor type and features"
152
153config HAVE_MARCH_Z900_FEATURES
154 def_bool n
155
156config HAVE_MARCH_Z990_FEATURES
157 def_bool n
158 select HAVE_MARCH_Z900_FEATURES
159
160config HAVE_MARCH_Z9_109_FEATURES
161 def_bool n
162 select HAVE_MARCH_Z990_FEATURES
163
164config HAVE_MARCH_Z10_FEATURES
165 def_bool n
166 select HAVE_MARCH_Z9_109_FEATURES
167
168config HAVE_MARCH_Z196_FEATURES
169 def_bool n
170 select HAVE_MARCH_Z10_FEATURES
171
991c1505
HC
172config HAVE_MARCH_ZEC12_FEATURES
173 def_bool n
174 select HAVE_MARCH_Z196_FEATURES
175
843c48fd
JG
176choice
177 prompt "Processor type"
178 default MARCH_G5
179
180config MARCH_G5
181 bool "System/390 model G5 and G6"
182 depends on !64BIT
183 help
184 Select this to build a 31 bit kernel that works
185 on all ESA/390 and z/Architecture machines.
1da177e4 186
843c48fd
JG
187config MARCH_Z900
188 bool "IBM zSeries model z800 and z900"
189 select HAVE_MARCH_Z900_FEATURES if 64BIT
190 help
191 Select this to enable optimizations for model z800/z900 (2064 and
192 2066 series). This will enable some optimizations that are not
193 available on older ESA/390 (31 Bit) only CPUs.
194
195config MARCH_Z990
196 bool "IBM zSeries model z890 and z990"
197 select HAVE_MARCH_Z990_FEATURES if 64BIT
198 help
199 Select this to enable optimizations for model z890/z990 (2084 and
200 2086 series). The kernel will be slightly faster but will not work
201 on older machines.
202
203config MARCH_Z9_109
204 bool "IBM System z9"
205 select HAVE_MARCH_Z9_109_FEATURES if 64BIT
206 help
207 Select this to enable optimizations for IBM System z9 (2094 and
208 2096 series). The kernel will be slightly faster but will not work
209 on older machines.
210
211config MARCH_Z10
212 bool "IBM System z10"
213 select HAVE_MARCH_Z10_FEATURES if 64BIT
214 help
215 Select this to enable optimizations for IBM System z10 (2097 and
216 2098 series). The kernel will be slightly faster but will not work
217 on older machines.
218
219config MARCH_Z196
220 bool "IBM zEnterprise 114 and 196"
221 select HAVE_MARCH_Z196_FEATURES if 64BIT
222 help
223 Select this to enable optimizations for IBM zEnterprise 114 and 196
224 (2818 and 2817 series). The kernel will be slightly faster but will
225 not work on older machines.
1da177e4 226
991c1505
HC
227config MARCH_ZEC12
228 bool "IBM zEC12"
229 select HAVE_MARCH_ZEC12_FEATURES if 64BIT
230 help
231 Select this to enable optimizations for IBM zEC12 (2827 series). The
232 kernel will be slightly faster but will not work on older machines.
233
843c48fd 234endchoice
1da177e4 235
347a8dc3 236config 64BIT
6f9a3c33
MS
237 def_bool y
238 prompt "64 bit kernel"
1da177e4 239 help
db81a23d 240 Select this option if you have an IBM z/Architecture machine
1da177e4
LT
241 and want to use the 64 bit addressing mode.
242
d9f7a745 243config 32BIT
6f9a3c33 244 def_bool y if !64BIT
d9f7a745 245
843c48fd
JG
246config COMPAT
247 def_bool y
248 prompt "Kernel support for 31 bit emulation"
249 depends on 64BIT
250 select COMPAT_BINFMT_ELF if BINFMT_ELF
251 select ARCH_WANT_OLD_COMPAT_IPC
252 help
253 Select this option if you want to enable your system kernel to
254 handle system-calls from ELF binaries for 31 bit ESA. This option
255 (and some other stuff like libraries and such) is needed for
256 executing 31 bit applications. It is safe to say "Y".
257
258config SYSVIPC_COMPAT
259 def_bool y if COMPAT && SYSVIPC
260
261config KEYS_COMPAT
262 def_bool y if COMPAT && KEYS
263
1da177e4 264config SMP
6f9a3c33
MS
265 def_bool y
266 prompt "Symmetric multi-processing support"
1da177e4
LT
267 ---help---
268 This enables support for systems with more than one CPU. If you have
269 a system with only one CPU, like most personal computers, say N. If
270 you have a system with more than one CPU, say Y.
271
272 If you say N here, the kernel will run on single and multiprocessor
273 machines, but will use only one CPU of a multiprocessor machine. If
274 you say Y here, the kernel will run on many, but not all,
275 singleprocessor machines. On a singleprocessor machine, the kernel
276 will run faster if you say N here.
277
03502faa
AB
278 See also the SMP-HOWTO available at
279 <http://www.tldp.org/docs.html#howto>.
1da177e4
LT
280
281 Even if you don't know what to do here, say Y.
282
283config NR_CPUS
284 int "Maximum number of CPUs (2-64)"
285 range 2 64
286 depends on SMP
057c5cb3
HC
287 default "32" if !64BIT
288 default "64" if 64BIT
1da177e4
LT
289 help
290 This allows you to specify the maximum number of CPUs which this
291 kernel will support. The maximum supported value is 64 and the
292 minimum value which makes sense is 2.
293
294 This is purely to save memory - each supported CPU adds
295 approximately sixteen kilobytes to the kernel image.
296
297config HOTPLUG_CPU
6f9a3c33
MS
298 def_bool y
299 prompt "Support for hot-pluggable CPUs"
1da177e4
LT
300 depends on SMP
301 select HOTPLUG
1da177e4
LT
302 help
303 Say Y here to be able to turn CPUs off and on. CPUs
304 can be controlled through /sys/devices/system/cpu/cpu#.
305 Say N if you want to disable CPU hotplug.
306
8d11e021 307config SCHED_MC
83a24e32 308 def_bool n
8d11e021 309
4cb14bc8 310config SCHED_BOOK
6f9a3c33
MS
311 def_bool y
312 prompt "Book scheduler support"
83a24e32
HC
313 depends on SMP
314 select SCHED_MC
4cb14bc8
HC
315 help
316 Book scheduler support improves the CPU scheduler's decision making
317 when dealing with machines that have several books.
318
843c48fd
JG
319source kernel/Kconfig.preempt
320
1da177e4 321config MATHEMU
6f9a3c33
MS
322 def_bool y
323 prompt "IEEE FPU emulation"
1da177e4
LT
324 depends on MARCH_G5
325 help
326 This option is required for IEEE compliant floating point arithmetic
db81a23d 327 on older ESA/390 machines. Say Y unless you know your machine doesn't
1da177e4
LT
328 need this.
329
843c48fd 330source kernel/Kconfig.hz
1da177e4 331
843c48fd 332endmenu
1da177e4 333
843c48fd 334menu "Memory setup"
1d057720 335
843c48fd 336config ARCH_SPARSEMEM_ENABLE
6f9a3c33 337 def_bool y
843c48fd
JG
338 select SPARSEMEM_VMEMMAP_ENABLE
339 select SPARSEMEM_VMEMMAP
340 select SPARSEMEM_STATIC if !64BIT
e65e1fc2 341
843c48fd
JG
342config ARCH_SPARSEMEM_DEFAULT
343 def_bool y
1da177e4 344
843c48fd
JG
345config ARCH_SELECT_MEMORY_MODEL
346 def_bool y
1da177e4 347
843c48fd
JG
348config ARCH_ENABLE_MEMORY_HOTPLUG
349 def_bool y if SPARSEMEM
0efa4703 350
843c48fd
JG
351config ARCH_ENABLE_MEMORY_HOTREMOVE
352 def_bool y
e37f50e1 353
843c48fd
JG
354config FORCE_MAX_ZONEORDER
355 int
356 default "9"
f861e405 357
843c48fd 358source "mm/Kconfig"
1da177e4
LT
359
360config PACK_STACK
6f9a3c33
MS
361 def_bool y
362 prompt "Pack kernel stack"
1da177e4
LT
363 help
364 This option enables the compiler option -mkernel-backchain if it
365 is available. If the option is available the compiler supports
366 the new stack layout which dramatically reduces the minimum stack
367 frame size. With an old compiler a non-leaf function needs a
368 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
369 -mkernel-backchain the minimum size drops to 16 byte on 31 bit
370 and 24 byte on 64 bit.
371
372 Say Y if you are unsure.
373
374config SMALL_STACK
6f9a3c33
MS
375 def_bool n
376 prompt "Use 8kb for kernel stack instead of 16kb"
7f5a8ba6 377 depends on PACK_STACK && 64BIT && !LOCKDEP
1da177e4
LT
378 help
379 If you say Y here and the compiler supports the -mkernel-backchain
7f5a8ba6
HC
380 option the kernel will use a smaller kernel stack size. The reduced
381 size is 8kb instead of 16kb. This allows to run more threads on a
382 system and reduces the pressure on the memory management for higher
383 order page allocations.
1da177e4
LT
384
385 Say N if you are unsure.
386
1da177e4 387config CHECK_STACK
6f9a3c33
MS
388 def_bool y
389 prompt "Detect kernel stack overflow"
1da177e4
LT
390 help
391 This option enables the compiler option -mstack-guard and
392 -mstack-size if they are available. If the compiler supports them
393 it will emit additional code to each function prolog to trigger
394 an illegal operation if the kernel stack is about to overflow.
395
396 Say N if you are unsure.
397
398config STACK_GUARD
399 int "Size of the guard area (128-1024)"
400 range 128 1024
401 depends on CHECK_STACK
402 default "256"
403 help
404 This allows you to specify the size of the guard area at the lower
405 end of the kernel stack. If the kernel stack points into the guard
406 area on function entry an illegal operation is triggered. The size
407 needs to be a power of 2. Please keep in mind that the size of an
408 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
409 The minimum size for the stack guard should be 256 for 31 bit and
410 512 for 64 bit.
411
2c190da4 412config WARN_DYNAMIC_STACK
6f9a3c33 413 def_bool n
2c190da4 414 prompt "Emit compiler warnings for function with dynamic stack usage"
1da177e4 415 help
2c190da4
JG
416 This option enables the compiler option -mwarn-dynamicstack. If the
417 compiler supports this options generates warnings for functions
418 that dynamically allocate stack space using alloca.
1da177e4
LT
419
420 Say N if you are unsure.
421
843c48fd 422endmenu
3f22ab27 423
843c48fd 424menu "I/O subsystem"
1da177e4 425
1da177e4 426config QDIO
6f9a3c33
MS
427 def_tristate y
428 prompt "QDIO support"
1da177e4 429 ---help---
8129ee16 430 This driver provides the Queued Direct I/O base support for
efca13bc 431 IBM System z.
1da177e4
LT
432
433 To compile this driver as a module, choose M here: the
434 module will be called qdio.
435
436 If unsure, say Y.
437
c8717a3d
JG
438menuconfig PCI
439 bool "PCI support"
440 default n
441 depends on 64BIT
442 select ARCH_SUPPORTS_MSI
443 select PCI_MSI
444 help
445 Enable PCI support.
446
447if PCI
448
449config PCI_NR_FUNCTIONS
450 int "Maximum number of PCI functions (1-4096)"
451 range 1 4096
452 default "64"
453 help
454 This allows you to specify the maximum number of PCI functions which
455 this kernel will support.
456
457source "drivers/pci/Kconfig"
458source "drivers/pci/pcie/Kconfig"
459source "drivers/pci/hotplug/Kconfig"
460
461endif # PCI
462
463config PCI_DOMAINS
464 def_bool PCI
465
466config HAS_IOMEM
467 def_bool PCI
468
469config IOMMU_HELPER
470 def_bool PCI
471
472config HAS_DMA
473 def_bool PCI
474 select HAVE_DMA_API_DEBUG
475
476config NEED_SG_DMA_LENGTH
477 def_bool PCI
478
479config HAVE_DMA_ATTRS
480 def_bool PCI
481
9d92a7e1 482config CHSC_SCH
d9c11b1e 483 def_tristate m
6f9a3c33 484 prompt "Support for CHSC subchannels"
9d92a7e1
CH
485 help
486 This driver allows usage of CHSC subchannels. A CHSC subchannel
487 is usually present on LPAR only.
488 The driver creates a device /dev/chsc, which may be used to
489 obtain I/O configuration information about the machine and
490 to issue asynchronous chsc commands (DANGEROUS).
491 You will usually only want to use this interface on a special
492 LPAR designated for system management.
493
494 To compile this driver as a module, choose M here: the
495 module will be called chsc_sch.
496
497 If unsure, say N.
498
1d1c8f78
SO
499config SCM_BUS
500 def_bool y
501 depends on 64BIT
502 prompt "SCM bus driver"
503 help
504 Bus driver for Storage Class Memory.
505
eadb86ab
SO
506config EADM_SCH
507 def_tristate m
508 prompt "Support for EADM subchannels"
509 depends on SCM_BUS
510 help
511 This driver allows usage of EADM subchannels. EADM subchannels act
512 as a communication vehicle for SCM increments.
513
514 To compile this driver as a module, choose M here: the
515 module will be called eadm_sch.
516
843c48fd
JG
517endmenu
518
519menu "Dump support"
520
521config CRASH_DUMP
522 bool "kernel crash dumps"
523 depends on 64BIT && SMP
524 select KEXEC
525 help
526 Generate crash dump after being started by kexec.
527 Crash dump kernels are loaded in the main kernel with kexec-tools
528 into a specially reserved region and then later executed after
529 a crash by kdump/kexec.
530 For more details see Documentation/kdump/kdump.txt
531
532config ZFCPDUMP
533 def_bool n
534 prompt "zfcpdump support"
535 select SMP
536 help
537 Select this option if you want to build an zfcpdump enabled kernel.
538 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
539
540endmenu
541
542menu "Executable file formats / Emulations"
1da177e4 543
1da177e4
LT
544source "fs/Kconfig.binfmt"
545
843c48fd
JG
546config SECCOMP
547 def_bool y
548 prompt "Enable seccomp to safely compute untrusted bytecode"
549 depends on PROC_FS
550 help
551 This kernel feature is useful for number crunching applications
552 that may need to compute untrusted bytecode during their
553 execution. By using pipes or other transports made available to
554 the process as file descriptors supporting the read/write
555 syscalls, it's possible to isolate those applications in
556 their own address space using seccomp. Once seccomp is
557 enabled via /proc/<pid>/seccomp, it cannot be disabled
558 and the task is only allowed to execute a few safe syscalls
559 defined by each seccomp mode.
560
561 If unsure, say Y.
562
563endmenu
564
565menu "Power Management"
566
567config ARCH_HIBERNATION_POSSIBLE
568 def_bool y if 64BIT
569
570source "kernel/power/Kconfig"
571
572endmenu
573
574source "net/Kconfig"
575
576config PCMCIA
577 def_bool n
578
579config CCW
580 def_bool y
581
582source "drivers/Kconfig"
583
584source "fs/Kconfig"
585
586source "arch/s390/Kconfig.debug"
587
588source "security/Kconfig"
589
590source "crypto/Kconfig"
591
592source "lib/Kconfig"
593
594menu "Virtualization"
684de39b 595
1da177e4 596config PFAULT
6f9a3c33
MS
597 def_bool y
598 prompt "Pseudo page fault support"
1da177e4
LT
599 help
600 Select this option, if you want to use PFAULT pseudo page fault
601 handling under VM. If running native or in LPAR, this option
602 has no effect. If your VM does not support PFAULT, PAGEEX
603 pseudo page fault handling will be used.
604 Note that VM 4.2 supports PFAULT but has a bug in its
605 implementation that causes some problems.
606 Everybody who wants to run Linux under VM != VM4.2 should select
607 this option.
608
609config SHARED_KERNEL
0eccc783
HC
610 bool "VM shared kernel support"
611 depends on !JUMP_LABEL
1da177e4
LT
612 help
613 Select this option, if you want to share the text segment of the
614 Linux kernel between different VM guests. This reduces memory
615 usage with lots of guests but greatly increases kernel size.
9c9c1761
HC
616 Also if a kernel was IPL'ed from a shared segment the kexec system
617 call will not work.
1da177e4
LT
618 You should only select this option if you know what you are
619 doing and want to exploit this feature.
620
621config CMM
6f9a3c33
MS
622 def_tristate n
623 prompt "Cooperative memory management"
1da177e4
LT
624 help
625 Select this option, if you want to enable the kernel interface
626 to reduce the memory size of the system. This is accomplished
627 by allocating pages of memory and put them "on hold". This only
628 makes sense for a system running under VM where the unused pages
629 will be reused by VM for other guest systems. The interface
630 allows an external monitor to balance memory of many systems.
631 Everybody who wants to run Linux under VM should select this
632 option.
633
1da177e4 634config CMM_IUCV
6f9a3c33
MS
635 def_bool y
636 prompt "IUCV special message interface to cooperative memory management"
1da177e4
LT
637 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
638 help
639 Select this option to enable the special message interface to
640 the cooperative memory management.
641
1da177e4 642config APPLDATA_BASE
6f9a3c33
MS
643 def_bool n
644 prompt "Linux - VM Monitor Stream, base infrastructure"
c185b783 645 depends on PROC_FS
1da177e4
LT
646 help
647 This provides a kernel interface for creating and updating z/VM APPLDATA
648 monitor records. The monitor records are updated at certain time
649 intervals, once the timer is started.
650 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
651 i.e. enables or disables monitoring on the Linux side.
652 A custom interval value (in seconds) can be written to
653 /proc/appldata/interval.
654
655 Defaults are 60 seconds interval and timer off.
656 The /proc entries can also be read from, showing the current settings.
657
658config APPLDATA_MEM
6f9a3c33
MS
659 def_tristate m
660 prompt "Monitor memory management statistics"
62fb2ba3 661 depends on APPLDATA_BASE && VM_EVENT_COUNTERS
1da177e4
LT
662 help
663 This provides memory management related data to the Linux - VM Monitor
664 Stream, like paging/swapping rate, memory utilisation, etc.
665 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
666 APPLDATA monitor record, i.e. enables or disables monitoring this record
667 on the z/VM side.
668
669 Default is disabled.
670 The /proc entry can also be read from, showing the current settings.
671
672 This can also be compiled as a module, which will be called
673 appldata_mem.o.
674
675config APPLDATA_OS
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676 def_tristate m
677 prompt "Monitor OS statistics"
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678 depends on APPLDATA_BASE
679 help
680 This provides OS related data to the Linux - VM Monitor Stream, like
681 CPU utilisation, etc.
682 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
683 APPLDATA monitor record, i.e. enables or disables monitoring this record
684 on the z/VM side.
685
686 Default is disabled.
687 This can also be compiled as a module, which will be called
688 appldata_os.o.
689
690config APPLDATA_NET_SUM
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691 def_tristate m
692 prompt "Monitor overall network statistics"
70193af9 693 depends on APPLDATA_BASE && NET
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694 help
695 This provides network related data to the Linux - VM Monitor Stream,
696 currently there is only a total sum of network I/O statistics, no
697 per-interface data.
698 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
699 APPLDATA monitor record, i.e. enables or disables monitoring this record
700 on the z/VM side.
701
702 Default is disabled.
703 This can also be compiled as a module, which will be called
704 appldata_net_sum.o.
705
24bbb1fa 706config S390_HYPFS_FS
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707 def_bool y
708 prompt "s390 hypervisor file system support"
24bbb1fa 709 select SYS_HYPERVISOR
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710 help
711 This is a virtual file system intended to provide accounting
712 information in an s390 hypervisor environment.
713
843c48fd 714source "arch/s390/kvm/Kconfig"
411ed322 715
fa587743 716config S390_GUEST
6f9a3c33 717 def_bool y
bdd1fc27 718 prompt "s390 support for virtio devices (EXPERIMENTAL)"
fa587743 719 depends on 64BIT && EXPERIMENTAL
80629b0b 720 select VIRTUALIZATION
fa587743 721 select VIRTIO
faeba830 722 select VIRTIO_CONSOLE
fa587743 723 help
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724 Enabling this option adds support for virtio based paravirtual device
725 drivers on s390.
1da177e4 726
20766c08 727 Select this option if you want to run the kernel as a guest under
bdd1fc27 728 the KVM hypervisor.
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729
730endmenu