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Commit | Line | Data |
---|---|---|
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 y | |
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 y | |
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_HAS_ELF_RANDOMIZE | |
69 | select ARCH_HAS_GCOV_PROFILE_ALL | |
70 | select ARCH_HAS_SG_CHAIN | |
71 | select ARCH_HAVE_NMI_SAFE_CMPXCHG | |
72 | select ARCH_INLINE_READ_LOCK | |
73 | select ARCH_INLINE_READ_LOCK_BH | |
74 | select ARCH_INLINE_READ_LOCK_IRQ | |
75 | select ARCH_INLINE_READ_LOCK_IRQSAVE | |
76 | select ARCH_INLINE_READ_TRYLOCK | |
77 | select ARCH_INLINE_READ_UNLOCK | |
78 | select ARCH_INLINE_READ_UNLOCK_BH | |
79 | select ARCH_INLINE_READ_UNLOCK_IRQ | |
80 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE | |
81 | select ARCH_INLINE_SPIN_LOCK | |
82 | select ARCH_INLINE_SPIN_LOCK_BH | |
83 | select ARCH_INLINE_SPIN_LOCK_IRQ | |
84 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE | |
85 | select ARCH_INLINE_SPIN_TRYLOCK | |
86 | select ARCH_INLINE_SPIN_TRYLOCK_BH | |
87 | select ARCH_INLINE_SPIN_UNLOCK | |
88 | select ARCH_INLINE_SPIN_UNLOCK_BH | |
89 | select ARCH_INLINE_SPIN_UNLOCK_IRQ | |
90 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE | |
91 | select ARCH_INLINE_WRITE_LOCK | |
92 | select ARCH_INLINE_WRITE_LOCK_BH | |
93 | select ARCH_INLINE_WRITE_LOCK_IRQ | |
94 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE | |
95 | select ARCH_INLINE_WRITE_TRYLOCK | |
96 | select ARCH_INLINE_WRITE_UNLOCK | |
97 | select ARCH_INLINE_WRITE_UNLOCK_BH | |
98 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | |
99 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | |
100 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION | |
101 | select ARCH_SUPPORTS_ATOMIC_RMW | |
102 | select ARCH_USE_CMPXCHG_LOCKREF | |
103 | select ARCH_WANT_IPC_PARSE_VERSION | |
104 | select BUILDTIME_EXTABLE_SORT | |
105 | select CLONE_BACKWARDS2 | |
106 | select DYNAMIC_FTRACE if FUNCTION_TRACER | |
107 | select GENERIC_CLOCKEVENTS | |
108 | select GENERIC_CPU_AUTOPROBE | |
109 | select GENERIC_CPU_DEVICES if !SMP | |
110 | select GENERIC_FIND_FIRST_BIT | |
111 | select GENERIC_SMP_IDLE_THREAD | |
112 | select GENERIC_TIME_VSYSCALL | |
113 | select HAVE_ALIGNED_STRUCT_PAGE if SLUB | |
114 | select HAVE_ARCH_AUDITSYSCALL | |
115 | select HAVE_ARCH_JUMP_LABEL | |
116 | select HAVE_ARCH_SECCOMP_FILTER | |
117 | select HAVE_ARCH_TRACEHOOK | |
118 | select HAVE_ARCH_TRANSPARENT_HUGEPAGE | |
119 | select HAVE_BPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES | |
120 | select HAVE_CMPXCHG_DOUBLE | |
121 | select HAVE_CMPXCHG_LOCAL | |
122 | select HAVE_DEBUG_KMEMLEAK | |
123 | select HAVE_DYNAMIC_FTRACE | |
124 | select HAVE_DYNAMIC_FTRACE_WITH_REGS | |
125 | select HAVE_FTRACE_MCOUNT_RECORD | |
126 | select HAVE_FUNCTION_GRAPH_TRACER | |
127 | select HAVE_FUNCTION_TRACER | |
128 | select HAVE_FUTEX_CMPXCHG if FUTEX | |
129 | select HAVE_KERNEL_BZIP2 | |
130 | select HAVE_KERNEL_GZIP | |
131 | select HAVE_KERNEL_LZ4 | |
132 | select HAVE_KERNEL_LZMA | |
133 | select HAVE_KERNEL_LZO | |
134 | select HAVE_KERNEL_XZ | |
135 | select HAVE_KPROBES | |
136 | select HAVE_KRETPROBES | |
137 | select HAVE_KVM | |
138 | select HAVE_LIVEPATCH | |
139 | select HAVE_MEMBLOCK | |
140 | select HAVE_MEMBLOCK_NODE_MAP | |
141 | select HAVE_MEMBLOCK_PHYS_MAP | |
142 | select HAVE_MOD_ARCH_SPECIFIC | |
143 | select HAVE_OPROFILE | |
144 | select HAVE_PERF_EVENTS | |
145 | select HAVE_REGS_AND_STACK_ACCESS_API | |
146 | select HAVE_SYSCALL_TRACEPOINTS | |
147 | select HAVE_VIRT_CPU_ACCOUNTING | |
148 | select MODULES_USE_ELF_RELA | |
149 | select NO_BOOTMEM | |
150 | select OLD_SIGACTION | |
151 | select OLD_SIGSUSPEND3 | |
152 | select SYSCTL_EXCEPTION_TRACE | |
153 | select TTY | |
154 | select VIRT_CPU_ACCOUNTING | |
155 | select VIRT_TO_BUS | |
156 | ||
157 | config SCHED_OMIT_FRAME_POINTER | |
158 | def_bool y | |
159 | ||
160 | config PGTABLE_LEVELS | |
161 | int | |
162 | default 4 if 64BIT | |
163 | default 2 | |
164 | ||
165 | source "init/Kconfig" | |
166 | ||
167 | source "kernel/Kconfig.freezer" | |
168 | ||
169 | source "kernel/livepatch/Kconfig" | |
170 | ||
171 | menu "Processor type and features" | |
172 | ||
173 | config HAVE_MARCH_Z900_FEATURES | |
174 | def_bool n | |
175 | ||
176 | config HAVE_MARCH_Z990_FEATURES | |
177 | def_bool n | |
178 | select HAVE_MARCH_Z900_FEATURES | |
179 | ||
180 | config HAVE_MARCH_Z9_109_FEATURES | |
181 | def_bool n | |
182 | select HAVE_MARCH_Z990_FEATURES | |
183 | ||
184 | config HAVE_MARCH_Z10_FEATURES | |
185 | def_bool n | |
186 | select HAVE_MARCH_Z9_109_FEATURES | |
187 | ||
188 | config HAVE_MARCH_Z196_FEATURES | |
189 | def_bool n | |
190 | select HAVE_MARCH_Z10_FEATURES | |
191 | ||
192 | config HAVE_MARCH_ZEC12_FEATURES | |
193 | def_bool n | |
194 | select HAVE_MARCH_Z196_FEATURES | |
195 | ||
196 | config HAVE_MARCH_Z13_FEATURES | |
197 | def_bool n | |
198 | select HAVE_MARCH_ZEC12_FEATURES | |
199 | ||
200 | choice | |
201 | prompt "Processor type" | |
202 | default MARCH_Z900 | |
203 | ||
204 | config MARCH_Z900 | |
205 | bool "IBM zSeries model z800 and z900" | |
206 | select HAVE_MARCH_Z900_FEATURES | |
207 | help | |
208 | Select this to enable optimizations for model z800/z900 (2064 and | |
209 | 2066 series). This will enable some optimizations that are not | |
210 | available on older ESA/390 (31 Bit) only CPUs. | |
211 | ||
212 | config MARCH_Z990 | |
213 | bool "IBM zSeries model z890 and z990" | |
214 | select HAVE_MARCH_Z990_FEATURES | |
215 | help | |
216 | Select this to enable optimizations for model z890/z990 (2084 and | |
217 | 2086 series). The kernel will be slightly faster but will not work | |
218 | on older machines. | |
219 | ||
220 | config MARCH_Z9_109 | |
221 | bool "IBM System z9" | |
222 | select HAVE_MARCH_Z9_109_FEATURES | |
223 | help | |
224 | Select this to enable optimizations for IBM System z9 (2094 and | |
225 | 2096 series). The kernel will be slightly faster but will not work | |
226 | on older machines. | |
227 | ||
228 | config MARCH_Z10 | |
229 | bool "IBM System z10" | |
230 | select HAVE_MARCH_Z10_FEATURES | |
231 | help | |
232 | Select this to enable optimizations for IBM System z10 (2097 and | |
233 | 2098 series). The kernel will be slightly faster but will not work | |
234 | on older machines. | |
235 | ||
236 | config MARCH_Z196 | |
237 | bool "IBM zEnterprise 114 and 196" | |
238 | select HAVE_MARCH_Z196_FEATURES | |
239 | help | |
240 | Select this to enable optimizations for IBM zEnterprise 114 and 196 | |
241 | (2818 and 2817 series). The kernel will be slightly faster but will | |
242 | not work on older machines. | |
243 | ||
244 | config MARCH_ZEC12 | |
245 | bool "IBM zBC12 and zEC12" | |
246 | select HAVE_MARCH_ZEC12_FEATURES | |
247 | help | |
248 | Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and | |
249 | 2827 series). The kernel will be slightly faster but will not work on | |
250 | older machines. | |
251 | ||
252 | config MARCH_Z13 | |
253 | bool "IBM z13" | |
254 | select HAVE_MARCH_Z13_FEATURES | |
255 | help | |
256 | Select this to enable optimizations for IBM z13 (2964 series). | |
257 | The kernel will be slightly faster but will not work on older | |
258 | machines. | |
259 | ||
260 | endchoice | |
261 | ||
262 | config MARCH_Z900_TUNE | |
263 | def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT | |
264 | ||
265 | config MARCH_Z990_TUNE | |
266 | def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT | |
267 | ||
268 | config MARCH_Z9_109_TUNE | |
269 | def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT | |
270 | ||
271 | config MARCH_Z10_TUNE | |
272 | def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT | |
273 | ||
274 | config MARCH_Z196_TUNE | |
275 | def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT | |
276 | ||
277 | config MARCH_ZEC12_TUNE | |
278 | def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT | |
279 | ||
280 | config MARCH_Z13_TUNE | |
281 | def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT | |
282 | ||
283 | choice | |
284 | prompt "Tune code generation" | |
285 | default TUNE_DEFAULT | |
286 | help | |
287 | Cause the compiler to tune (-mtune) the generated code for a machine. | |
288 | This will make the code run faster on the selected machine but | |
289 | somewhat slower on other machines. | |
290 | This option only changes how the compiler emits instructions, not the | |
291 | selection of instructions itself, so the resulting kernel will run on | |
292 | all other machines. | |
293 | ||
294 | config TUNE_DEFAULT | |
295 | bool "Default" | |
296 | help | |
297 | Tune the generated code for the target processor for which the kernel | |
298 | will be compiled. | |
299 | ||
300 | config TUNE_Z900 | |
301 | bool "IBM zSeries model z800 and z900" | |
302 | ||
303 | config TUNE_Z990 | |
304 | bool "IBM zSeries model z890 and z990" | |
305 | ||
306 | config TUNE_Z9_109 | |
307 | bool "IBM System z9" | |
308 | ||
309 | config TUNE_Z10 | |
310 | bool "IBM System z10" | |
311 | ||
312 | config TUNE_Z196 | |
313 | bool "IBM zEnterprise 114 and 196" | |
314 | ||
315 | config TUNE_ZEC12 | |
316 | bool "IBM zBC12 and zEC12" | |
317 | ||
318 | config TUNE_Z13 | |
319 | bool "IBM z13" | |
320 | ||
321 | endchoice | |
322 | ||
323 | config 64BIT | |
324 | def_bool y | |
325 | ||
326 | config COMPAT | |
327 | def_bool y | |
328 | prompt "Kernel support for 31 bit emulation" | |
329 | select COMPAT_BINFMT_ELF if BINFMT_ELF | |
330 | select ARCH_WANT_OLD_COMPAT_IPC | |
331 | select COMPAT_OLD_SIGACTION | |
332 | depends on MULTIUSER | |
333 | help | |
334 | Select this option if you want to enable your system kernel to | |
335 | handle system-calls from ELF binaries for 31 bit ESA. This option | |
336 | (and some other stuff like libraries and such) is needed for | |
337 | executing 31 bit applications. It is safe to say "Y". | |
338 | ||
339 | config SYSVIPC_COMPAT | |
340 | def_bool y if COMPAT && SYSVIPC | |
341 | ||
342 | config KEYS_COMPAT | |
343 | def_bool y if COMPAT && KEYS | |
344 | ||
345 | config SMP | |
346 | def_bool y | |
347 | prompt "Symmetric multi-processing support" | |
348 | ---help--- | |
349 | This enables support for systems with more than one CPU. If you have | |
350 | a system with only one CPU, like most personal computers, say N. If | |
351 | you have a system with more than one CPU, say Y. | |
352 | ||
353 | If you say N here, the kernel will run on uni- and multiprocessor | |
354 | machines, but will use only one CPU of a multiprocessor machine. If | |
355 | you say Y here, the kernel will run on many, but not all, | |
356 | uniprocessor machines. On a uniprocessor machine, the kernel | |
357 | will run faster if you say N here. | |
358 | ||
359 | See also the SMP-HOWTO available at | |
360 | <http://www.tldp.org/docs.html#howto>. | |
361 | ||
362 | Even if you don't know what to do here, say Y. | |
363 | ||
364 | config NR_CPUS | |
365 | int "Maximum number of CPUs (2-512)" | |
366 | range 2 512 | |
367 | depends on SMP | |
368 | default "64" | |
369 | help | |
370 | This allows you to specify the maximum number of CPUs which this | |
371 | kernel will support. The maximum supported value is 512 and the | |
372 | minimum value which makes sense is 2. | |
373 | ||
374 | This is purely to save memory - each supported CPU adds | |
375 | approximately sixteen kilobytes to the kernel image. | |
376 | ||
377 | config HOTPLUG_CPU | |
378 | def_bool y | |
379 | prompt "Support for hot-pluggable CPUs" | |
380 | depends on SMP | |
381 | help | |
382 | Say Y here to be able to turn CPUs off and on. CPUs | |
383 | can be controlled through /sys/devices/system/cpu/cpu#. | |
384 | Say N if you want to disable CPU hotplug. | |
385 | ||
386 | config SCHED_SMT | |
387 | def_bool n | |
388 | ||
389 | config SCHED_MC | |
390 | def_bool n | |
391 | ||
392 | config SCHED_BOOK | |
393 | def_bool n | |
394 | ||
395 | config SCHED_TOPOLOGY | |
396 | def_bool y | |
397 | prompt "Topology scheduler support" | |
398 | depends on SMP | |
399 | select SCHED_SMT | |
400 | select SCHED_MC | |
401 | select SCHED_BOOK | |
402 | help | |
403 | Topology scheduler support improves the CPU scheduler's decision | |
404 | making when dealing with machines that have multi-threading, | |
405 | multiple cores or multiple books. | |
406 | ||
407 | source kernel/Kconfig.preempt | |
408 | ||
409 | source kernel/Kconfig.hz | |
410 | ||
411 | endmenu | |
412 | ||
413 | menu "Memory setup" | |
414 | ||
415 | config ARCH_SPARSEMEM_ENABLE | |
416 | def_bool y | |
417 | select SPARSEMEM_VMEMMAP_ENABLE | |
418 | select SPARSEMEM_VMEMMAP | |
419 | ||
420 | config ARCH_SPARSEMEM_DEFAULT | |
421 | def_bool y | |
422 | ||
423 | config ARCH_SELECT_MEMORY_MODEL | |
424 | def_bool y | |
425 | ||
426 | config ARCH_ENABLE_MEMORY_HOTPLUG | |
427 | def_bool y if SPARSEMEM | |
428 | ||
429 | config ARCH_ENABLE_MEMORY_HOTREMOVE | |
430 | def_bool y | |
431 | ||
432 | config ARCH_ENABLE_SPLIT_PMD_PTLOCK | |
433 | def_bool y | |
434 | ||
435 | config FORCE_MAX_ZONEORDER | |
436 | int | |
437 | default "9" | |
438 | ||
439 | source "mm/Kconfig" | |
440 | ||
441 | config PACK_STACK | |
442 | def_bool y | |
443 | prompt "Pack kernel stack" | |
444 | help | |
445 | This option enables the compiler option -mkernel-backchain if it | |
446 | is available. If the option is available the compiler supports | |
447 | the new stack layout which dramatically reduces the minimum stack | |
448 | frame size. With an old compiler a non-leaf function needs a | |
449 | minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With | |
450 | -mkernel-backchain the minimum size drops to 16 byte on 31 bit | |
451 | and 24 byte on 64 bit. | |
452 | ||
453 | Say Y if you are unsure. | |
454 | ||
455 | config CHECK_STACK | |
456 | def_bool y | |
457 | prompt "Detect kernel stack overflow" | |
458 | help | |
459 | This option enables the compiler option -mstack-guard and | |
460 | -mstack-size if they are available. If the compiler supports them | |
461 | it will emit additional code to each function prolog to trigger | |
462 | an illegal operation if the kernel stack is about to overflow. | |
463 | ||
464 | Say N if you are unsure. | |
465 | ||
466 | config STACK_GUARD | |
467 | int "Size of the guard area (128-1024)" | |
468 | range 128 1024 | |
469 | depends on CHECK_STACK | |
470 | default "256" | |
471 | help | |
472 | This allows you to specify the size of the guard area at the lower | |
473 | end of the kernel stack. If the kernel stack points into the guard | |
474 | area on function entry an illegal operation is triggered. The size | |
475 | needs to be a power of 2. Please keep in mind that the size of an | |
476 | interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. | |
477 | The minimum size for the stack guard should be 256 for 31 bit and | |
478 | 512 for 64 bit. | |
479 | ||
480 | config WARN_DYNAMIC_STACK | |
481 | def_bool n | |
482 | prompt "Emit compiler warnings for function with dynamic stack usage" | |
483 | help | |
484 | This option enables the compiler option -mwarn-dynamicstack. If the | |
485 | compiler supports this options generates warnings for functions | |
486 | that dynamically allocate stack space using alloca. | |
487 | ||
488 | Say N if you are unsure. | |
489 | ||
490 | endmenu | |
491 | ||
492 | menu "I/O subsystem" | |
493 | ||
494 | config QDIO | |
495 | def_tristate y | |
496 | prompt "QDIO support" | |
497 | ---help--- | |
498 | This driver provides the Queued Direct I/O base support for | |
499 | IBM System z. | |
500 | ||
501 | To compile this driver as a module, choose M here: the | |
502 | module will be called qdio. | |
503 | ||
504 | If unsure, say Y. | |
505 | ||
506 | menuconfig PCI | |
507 | bool "PCI support" | |
508 | select HAVE_DMA_ATTRS | |
509 | select PCI_MSI | |
510 | help | |
511 | Enable PCI support. | |
512 | ||
513 | if PCI | |
514 | ||
515 | config PCI_NR_FUNCTIONS | |
516 | int "Maximum number of PCI functions (1-4096)" | |
517 | range 1 4096 | |
518 | default "64" | |
519 | help | |
520 | This allows you to specify the maximum number of PCI functions which | |
521 | this kernel will support. | |
522 | ||
523 | config PCI_NR_MSI | |
524 | int "Maximum number of MSI interrupts (64-32768)" | |
525 | range 64 32768 | |
526 | default "256" | |
527 | help | |
528 | This defines the number of virtual interrupts the kernel will | |
529 | provide for MSI interrupts. If you configure your system to have | |
530 | too few drivers will fail to allocate MSI interrupts for all | |
531 | PCI devices. | |
532 | ||
533 | source "drivers/pci/Kconfig" | |
534 | source "drivers/pci/pcie/Kconfig" | |
535 | source "drivers/pci/hotplug/Kconfig" | |
536 | ||
537 | endif # PCI | |
538 | ||
539 | config PCI_DOMAINS | |
540 | def_bool PCI | |
541 | ||
542 | config HAS_IOMEM | |
543 | def_bool PCI | |
544 | ||
545 | config IOMMU_HELPER | |
546 | def_bool PCI | |
547 | ||
548 | config HAS_DMA | |
549 | def_bool PCI | |
550 | select HAVE_DMA_API_DEBUG | |
551 | ||
552 | config NEED_SG_DMA_LENGTH | |
553 | def_bool PCI | |
554 | ||
555 | config NEED_DMA_MAP_STATE | |
556 | def_bool PCI | |
557 | ||
558 | config CHSC_SCH | |
559 | def_tristate m | |
560 | prompt "Support for CHSC subchannels" | |
561 | help | |
562 | This driver allows usage of CHSC subchannels. A CHSC subchannel | |
563 | is usually present on LPAR only. | |
564 | The driver creates a device /dev/chsc, which may be used to | |
565 | obtain I/O configuration information about the machine and | |
566 | to issue asynchronous chsc commands (DANGEROUS). | |
567 | You will usually only want to use this interface on a special | |
568 | LPAR designated for system management. | |
569 | ||
570 | To compile this driver as a module, choose M here: the | |
571 | module will be called chsc_sch. | |
572 | ||
573 | If unsure, say N. | |
574 | ||
575 | config SCM_BUS | |
576 | def_bool y | |
577 | prompt "SCM bus driver" | |
578 | help | |
579 | Bus driver for Storage Class Memory. | |
580 | ||
581 | config EADM_SCH | |
582 | def_tristate m | |
583 | prompt "Support for EADM subchannels" | |
584 | depends on SCM_BUS | |
585 | help | |
586 | This driver allows usage of EADM subchannels. EADM subchannels act | |
587 | as a communication vehicle for SCM increments. | |
588 | ||
589 | To compile this driver as a module, choose M here: the | |
590 | module will be called eadm_sch. | |
591 | ||
592 | endmenu | |
593 | ||
594 | menu "Dump support" | |
595 | ||
596 | config CRASH_DUMP | |
597 | bool "kernel crash dumps" | |
598 | depends on SMP | |
599 | select KEXEC | |
600 | help | |
601 | Generate crash dump after being started by kexec. | |
602 | Crash dump kernels are loaded in the main kernel with kexec-tools | |
603 | into a specially reserved region and then later executed after | |
604 | a crash by kdump/kexec. | |
605 | Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. | |
606 | This option also enables s390 zfcpdump. | |
607 | See also <file:Documentation/s390/zfcpdump.txt> | |
608 | ||
609 | endmenu | |
610 | ||
611 | menu "Executable file formats / Emulations" | |
612 | ||
613 | source "fs/Kconfig.binfmt" | |
614 | ||
615 | config SECCOMP | |
616 | def_bool y | |
617 | prompt "Enable seccomp to safely compute untrusted bytecode" | |
618 | depends on PROC_FS | |
619 | help | |
620 | This kernel feature is useful for number crunching applications | |
621 | that may need to compute untrusted bytecode during their | |
622 | execution. By using pipes or other transports made available to | |
623 | the process as file descriptors supporting the read/write | |
624 | syscalls, it's possible to isolate those applications in | |
625 | their own address space using seccomp. Once seccomp is | |
626 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
627 | and the task is only allowed to execute a few safe syscalls | |
628 | defined by each seccomp mode. | |
629 | ||
630 | If unsure, say Y. | |
631 | ||
632 | endmenu | |
633 | ||
634 | menu "Power Management" | |
635 | ||
636 | config ARCH_HIBERNATION_POSSIBLE | |
637 | def_bool y | |
638 | ||
639 | source "kernel/power/Kconfig" | |
640 | ||
641 | endmenu | |
642 | ||
643 | source "net/Kconfig" | |
644 | ||
645 | config PCMCIA | |
646 | def_bool n | |
647 | ||
648 | config CCW | |
649 | def_bool y | |
650 | ||
651 | source "drivers/Kconfig" | |
652 | ||
653 | source "fs/Kconfig" | |
654 | ||
655 | source "arch/s390/Kconfig.debug" | |
656 | ||
657 | source "security/Kconfig" | |
658 | ||
659 | source "crypto/Kconfig" | |
660 | ||
661 | source "lib/Kconfig" | |
662 | ||
663 | menu "Virtualization" | |
664 | ||
665 | config PFAULT | |
666 | def_bool y | |
667 | prompt "Pseudo page fault support" | |
668 | help | |
669 | Select this option, if you want to use PFAULT pseudo page fault | |
670 | handling under VM. If running native or in LPAR, this option | |
671 | has no effect. If your VM does not support PFAULT, PAGEEX | |
672 | pseudo page fault handling will be used. | |
673 | Note that VM 4.2 supports PFAULT but has a bug in its | |
674 | implementation that causes some problems. | |
675 | Everybody who wants to run Linux under VM != VM4.2 should select | |
676 | this option. | |
677 | ||
678 | config SHARED_KERNEL | |
679 | bool "VM shared kernel support" | |
680 | depends on !JUMP_LABEL | |
681 | help | |
682 | Select this option, if you want to share the text segment of the | |
683 | Linux kernel between different VM guests. This reduces memory | |
684 | usage with lots of guests but greatly increases kernel size. | |
685 | Also if a kernel was IPL'ed from a shared segment the kexec system | |
686 | call will not work. | |
687 | You should only select this option if you know what you are | |
688 | doing and want to exploit this feature. | |
689 | ||
690 | config CMM | |
691 | def_tristate n | |
692 | prompt "Cooperative memory management" | |
693 | help | |
694 | Select this option, if you want to enable the kernel interface | |
695 | to reduce the memory size of the system. This is accomplished | |
696 | by allocating pages of memory and put them "on hold". This only | |
697 | makes sense for a system running under VM where the unused pages | |
698 | will be reused by VM for other guest systems. The interface | |
699 | allows an external monitor to balance memory of many systems. | |
700 | Everybody who wants to run Linux under VM should select this | |
701 | option. | |
702 | ||
703 | config CMM_IUCV | |
704 | def_bool y | |
705 | prompt "IUCV special message interface to cooperative memory management" | |
706 | depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) | |
707 | help | |
708 | Select this option to enable the special message interface to | |
709 | the cooperative memory management. | |
710 | ||
711 | config APPLDATA_BASE | |
712 | def_bool n | |
713 | prompt "Linux - VM Monitor Stream, base infrastructure" | |
714 | depends on PROC_FS | |
715 | help | |
716 | This provides a kernel interface for creating and updating z/VM APPLDATA | |
717 | monitor records. The monitor records are updated at certain time | |
718 | intervals, once the timer is started. | |
719 | Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, | |
720 | i.e. enables or disables monitoring on the Linux side. | |
721 | A custom interval value (in seconds) can be written to | |
722 | /proc/appldata/interval. | |
723 | ||
724 | Defaults are 60 seconds interval and timer off. | |
725 | The /proc entries can also be read from, showing the current settings. | |
726 | ||
727 | config APPLDATA_MEM | |
728 | def_tristate m | |
729 | prompt "Monitor memory management statistics" | |
730 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS | |
731 | help | |
732 | This provides memory management related data to the Linux - VM Monitor | |
733 | Stream, like paging/swapping rate, memory utilisation, etc. | |
734 | Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM | |
735 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
736 | on the z/VM side. | |
737 | ||
738 | Default is disabled. | |
739 | The /proc entry can also be read from, showing the current settings. | |
740 | ||
741 | This can also be compiled as a module, which will be called | |
742 | appldata_mem.o. | |
743 | ||
744 | config APPLDATA_OS | |
745 | def_tristate m | |
746 | prompt "Monitor OS statistics" | |
747 | depends on APPLDATA_BASE | |
748 | help | |
749 | This provides OS related data to the Linux - VM Monitor Stream, like | |
750 | CPU utilisation, etc. | |
751 | Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM | |
752 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
753 | on the z/VM side. | |
754 | ||
755 | Default is disabled. | |
756 | This can also be compiled as a module, which will be called | |
757 | appldata_os.o. | |
758 | ||
759 | config APPLDATA_NET_SUM | |
760 | def_tristate m | |
761 | prompt "Monitor overall network statistics" | |
762 | depends on APPLDATA_BASE && NET | |
763 | help | |
764 | This provides network related data to the Linux - VM Monitor Stream, | |
765 | currently there is only a total sum of network I/O statistics, no | |
766 | per-interface data. | |
767 | Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM | |
768 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
769 | on the z/VM side. | |
770 | ||
771 | Default is disabled. | |
772 | This can also be compiled as a module, which will be called | |
773 | appldata_net_sum.o. | |
774 | ||
775 | config S390_HYPFS_FS | |
776 | def_bool y | |
777 | prompt "s390 hypervisor file system support" | |
778 | select SYS_HYPERVISOR | |
779 | help | |
780 | This is a virtual file system intended to provide accounting | |
781 | information in an s390 hypervisor environment. | |
782 | ||
783 | source "arch/s390/kvm/Kconfig" | |
784 | ||
785 | config S390_GUEST | |
786 | def_bool y | |
787 | prompt "s390 support for virtio devices" | |
788 | select TTY | |
789 | select VIRTUALIZATION | |
790 | select VIRTIO | |
791 | select VIRTIO_CONSOLE | |
792 | help | |
793 | Enabling this option adds support for virtio based paravirtual device | |
794 | drivers on s390. | |
795 | ||
796 | Select this option if you want to run the kernel as a guest under | |
797 | the KVM hypervisor. | |
798 | ||
799 | endmenu |