Commit | Line | Data |
---|---|---|
1da177e4 | 1 | config MMU |
61d48c2c | 2 | def_bool y |
1da177e4 | 3 | |
66701b14 | 4 | config ZONE_DMA |
69dbb2f7 | 5 | def_bool y |
66701b14 | 6 | |
2b105ff9 | 7 | config LOCKDEP_SUPPORT |
61d48c2c | 8 | def_bool y |
2b105ff9 | 9 | |
5bdc9b44 | 10 | config STACKTRACE_SUPPORT |
61d48c2c | 11 | def_bool y |
5bdc9b44 | 12 | |
a3afe70b HC |
13 | config HAVE_LATENCYTOP_SUPPORT |
14 | def_bool y | |
15 | ||
1da177e4 LT |
16 | config RWSEM_GENERIC_SPINLOCK |
17 | bool | |
18 | ||
19 | config RWSEM_XCHGADD_ALGORITHM | |
61d48c2c | 20 | def_bool y |
1da177e4 | 21 | |
f0d1b0b3 | 22 | config ARCH_HAS_ILOG2_U32 |
6f9a3c33 | 23 | def_bool n |
f0d1b0b3 DH |
24 | |
25 | config ARCH_HAS_ILOG2_U64 | |
6f9a3c33 | 26 | def_bool n |
f0d1b0b3 | 27 | |
7e33db4e | 28 | config GENERIC_HWEIGHT |
61d48c2c | 29 | def_bool y |
7e33db4e | 30 | |
c0007f1a | 31 | config GENERIC_BUG |
6f9a3c33 | 32 | def_bool y if BUG |
c0007f1a | 33 | |
52499f40 HC |
34 | config GENERIC_BUG_RELATIVE_POINTERS |
35 | def_bool y | |
36 | ||
eca577ef FT |
37 | config ARCH_DMA_ADDR_T_64BIT |
38 | def_bool 64BIT | |
39 | ||
b6b40c53 | 40 | config GENERIC_LOCKBREAK |
6f9a3c33 | 41 | def_bool y if SMP && PREEMPT |
b6b40c53 | 42 | |
402b0862 | 43 | config PGSTE |
6f9a3c33 | 44 | def_bool y if KVM |
402b0862 | 45 | |
6a11f75b AM |
46 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
47 | def_bool y | |
48 | ||
843c48fd JG |
49 | config KEXEC |
50 | def_bool y | |
51 | ||
52 | config AUDIT_ARCH | |
53 | def_bool y | |
54 | ||
ce816fa8 | 55 | config NO_IOPORT_MAP |
c8717a3d JG |
56 | def_bool y |
57 | ||
58 | config PCI_QUIRKS | |
59 | def_bool n | |
60 | ||
347a8dc3 | 61 | config S390 |
61d48c2c | 62 | def_bool y |
0e0d04a8 | 63 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
93bead43 | 64 | select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS |
0e0d04a8 | 65 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
6beb0009 TG |
66 | select ARCH_INLINE_READ_LOCK |
67 | select ARCH_INLINE_READ_LOCK_BH | |
68 | select ARCH_INLINE_READ_LOCK_IRQ | |
69 | select ARCH_INLINE_READ_LOCK_IRQSAVE | |
0e0d04a8 | 70 | select ARCH_INLINE_READ_TRYLOCK |
6beb0009 TG |
71 | select ARCH_INLINE_READ_UNLOCK |
72 | select ARCH_INLINE_READ_UNLOCK_BH | |
73 | select ARCH_INLINE_READ_UNLOCK_IRQ | |
74 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE | |
0e0d04a8 HC |
75 | select ARCH_INLINE_SPIN_LOCK |
76 | select ARCH_INLINE_SPIN_LOCK_BH | |
77 | select ARCH_INLINE_SPIN_LOCK_IRQ | |
78 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE | |
79 | select ARCH_INLINE_SPIN_TRYLOCK | |
80 | select ARCH_INLINE_SPIN_TRYLOCK_BH | |
81 | select ARCH_INLINE_SPIN_UNLOCK | |
82 | select ARCH_INLINE_SPIN_UNLOCK_BH | |
83 | select ARCH_INLINE_SPIN_UNLOCK_IRQ | |
84 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE | |
6beb0009 TG |
85 | select ARCH_INLINE_WRITE_LOCK |
86 | select ARCH_INLINE_WRITE_LOCK_BH | |
87 | select ARCH_INLINE_WRITE_LOCK_IRQ | |
88 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE | |
0e0d04a8 | 89 | select ARCH_INLINE_WRITE_TRYLOCK |
6beb0009 TG |
90 | select ARCH_INLINE_WRITE_UNLOCK |
91 | select ARCH_INLINE_WRITE_UNLOCK_BH | |
92 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | |
93 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | |
0e0d04a8 | 94 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION |
36e7fdaa | 95 | select ARCH_SUPPORTS_ATOMIC_RMW |
efc1d23b | 96 | select ARCH_USE_CMPXCHG_LOCKREF |
c1d7e01d | 97 | select ARCH_WANT_IPC_PARSE_VERSION |
0e0d04a8 HC |
98 | select BUILDTIME_EXTABLE_SORT |
99 | select CLONE_BACKWARDS2 | |
100 | select GENERIC_CLOCKEVENTS | |
101 | select GENERIC_CPU_DEVICES if !SMP | |
746479cd | 102 | select GENERIC_FIND_FIRST_BIT |
e80e7813 | 103 | select GENERIC_SMP_IDLE_THREAD |
79c74ecb | 104 | select GENERIC_TIME_VSYSCALL |
0e0d04a8 | 105 | select HAVE_ALIGNED_STRUCT_PAGE if SLUB |
7a017721 | 106 | select HAVE_ARCH_AUDITSYSCALL |
0e0d04a8 | 107 | select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 |
c63cb468 | 108 | select HAVE_ARCH_SECCOMP_FILTER |
0e0d04a8 HC |
109 | select HAVE_ARCH_TRACEHOOK |
110 | select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT | |
111 | select HAVE_BPF_JIT if 64BIT && PACK_STACK | |
112 | select HAVE_CMPXCHG_DOUBLE | |
113 | select HAVE_CMPXCHG_LOCAL | |
114 | select HAVE_C_RECORDMCOUNT | |
115 | select HAVE_DEBUG_KMEMLEAK | |
116 | select HAVE_DYNAMIC_FTRACE | |
10dec7db | 117 | select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT |
0e0d04a8 HC |
118 | select HAVE_FTRACE_MCOUNT_RECORD |
119 | select HAVE_FUNCTION_GRAPH_TRACER | |
120 | select HAVE_FUNCTION_TRACER | |
03b8c7b6 | 121 | select HAVE_FUTEX_CMPXCHG if FUTEX |
0e0d04a8 HC |
122 | select HAVE_KERNEL_BZIP2 |
123 | select HAVE_KERNEL_GZIP | |
8e2872ce | 124 | select HAVE_KERNEL_LZ4 |
0e0d04a8 HC |
125 | select HAVE_KERNEL_LZMA |
126 | select HAVE_KERNEL_LZO | |
127 | select HAVE_KERNEL_XZ | |
128 | select HAVE_KPROBES | |
129 | select HAVE_KRETPROBES | |
130 | select HAVE_KVM if 64BIT | |
131 | select HAVE_MEMBLOCK | |
132 | select HAVE_MEMBLOCK_NODE_MAP | |
50be6345 | 133 | select HAVE_MEMBLOCK_PHYS_MAP |
786d35d4 | 134 | select HAVE_MOD_ARCH_SPECIFIC |
0e0d04a8 HC |
135 | select HAVE_OPROFILE |
136 | select HAVE_PERF_EVENTS | |
137 | select HAVE_REGS_AND_STACK_ACCESS_API | |
138 | select HAVE_SYSCALL_TRACEPOINTS | |
0e0d04a8 HC |
139 | select HAVE_UID16 if 32BIT |
140 | select HAVE_VIRT_CPU_ACCOUNTING | |
786d35d4 | 141 | select MODULES_USE_ELF_RELA |
50be6345 | 142 | select NO_BOOTMEM |
7eddd99c | 143 | select OLD_SIGACTION |
93bead43 | 144 | select OLD_SIGSUSPEND3 |
0e0d04a8 | 145 | select SYSCTL_EXCEPTION_TRACE |
0563416b | 146 | select TTY |
0e0d04a8 | 147 | select VIRT_CPU_ACCOUNTING |
93bead43 | 148 | select VIRT_TO_BUS |
308c09f1 | 149 | select ARCH_HAS_SG_CHAIN |
1da177e4 | 150 | |
fca3e357 | 151 | config SCHED_OMIT_FRAME_POINTER |
6f9a3c33 | 152 | def_bool y |
fca3e357 | 153 | |
1da177e4 LT |
154 | source "init/Kconfig" |
155 | ||
dc52ddc0 MH |
156 | source "kernel/Kconfig.freezer" |
157 | ||
843c48fd JG |
158 | menu "Processor type and features" |
159 | ||
160 | config HAVE_MARCH_Z900_FEATURES | |
161 | def_bool n | |
162 | ||
163 | config HAVE_MARCH_Z990_FEATURES | |
164 | def_bool n | |
165 | select HAVE_MARCH_Z900_FEATURES | |
166 | ||
167 | config HAVE_MARCH_Z9_109_FEATURES | |
168 | def_bool n | |
169 | select HAVE_MARCH_Z990_FEATURES | |
170 | ||
171 | config HAVE_MARCH_Z10_FEATURES | |
172 | def_bool n | |
173 | select HAVE_MARCH_Z9_109_FEATURES | |
174 | ||
175 | config HAVE_MARCH_Z196_FEATURES | |
176 | def_bool n | |
177 | select HAVE_MARCH_Z10_FEATURES | |
178 | ||
991c1505 HC |
179 | config HAVE_MARCH_ZEC12_FEATURES |
180 | def_bool n | |
181 | select HAVE_MARCH_Z196_FEATURES | |
182 | ||
843c48fd JG |
183 | choice |
184 | prompt "Processor type" | |
185 | default MARCH_G5 | |
186 | ||
187 | config MARCH_G5 | |
188 | bool "System/390 model G5 and G6" | |
189 | depends on !64BIT | |
190 | help | |
191 | Select this to build a 31 bit kernel that works | |
192 | on all ESA/390 and z/Architecture machines. | |
1da177e4 | 193 | |
843c48fd JG |
194 | config MARCH_Z900 |
195 | bool "IBM zSeries model z800 and z900" | |
196 | select HAVE_MARCH_Z900_FEATURES if 64BIT | |
197 | help | |
198 | Select this to enable optimizations for model z800/z900 (2064 and | |
199 | 2066 series). This will enable some optimizations that are not | |
200 | available on older ESA/390 (31 Bit) only CPUs. | |
201 | ||
202 | config MARCH_Z990 | |
203 | bool "IBM zSeries model z890 and z990" | |
204 | select HAVE_MARCH_Z990_FEATURES if 64BIT | |
205 | help | |
206 | Select this to enable optimizations for model z890/z990 (2084 and | |
207 | 2086 series). The kernel will be slightly faster but will not work | |
208 | on older machines. | |
209 | ||
210 | config MARCH_Z9_109 | |
211 | bool "IBM System z9" | |
212 | select HAVE_MARCH_Z9_109_FEATURES if 64BIT | |
213 | help | |
214 | Select this to enable optimizations for IBM System z9 (2094 and | |
215 | 2096 series). The kernel will be slightly faster but will not work | |
216 | on older machines. | |
217 | ||
218 | config MARCH_Z10 | |
219 | bool "IBM System z10" | |
220 | select HAVE_MARCH_Z10_FEATURES if 64BIT | |
221 | help | |
222 | Select this to enable optimizations for IBM System z10 (2097 and | |
223 | 2098 series). The kernel will be slightly faster but will not work | |
224 | on older machines. | |
225 | ||
226 | config MARCH_Z196 | |
227 | bool "IBM zEnterprise 114 and 196" | |
228 | select HAVE_MARCH_Z196_FEATURES if 64BIT | |
229 | help | |
230 | Select this to enable optimizations for IBM zEnterprise 114 and 196 | |
231 | (2818 and 2817 series). The kernel will be slightly faster but will | |
232 | not work on older machines. | |
1da177e4 | 233 | |
991c1505 | 234 | config MARCH_ZEC12 |
59471227 | 235 | bool "IBM zBC12 and zEC12" |
991c1505 HC |
236 | select HAVE_MARCH_ZEC12_FEATURES if 64BIT |
237 | help | |
59471227 HC |
238 | Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and |
239 | 2827 series). The kernel will be slightly faster but will not work on | |
240 | older machines. | |
991c1505 | 241 | |
843c48fd | 242 | endchoice |
1da177e4 | 243 | |
1db9e051 HC |
244 | config MARCH_G5_TUNE |
245 | def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT | |
246 | ||
247 | config MARCH_Z900_TUNE | |
248 | def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT | |
249 | ||
250 | config MARCH_Z990_TUNE | |
251 | def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT | |
252 | ||
253 | config MARCH_Z9_109_TUNE | |
254 | def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT | |
255 | ||
256 | config MARCH_Z10_TUNE | |
257 | def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT | |
258 | ||
259 | config MARCH_Z196_TUNE | |
260 | def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT | |
261 | ||
262 | config MARCH_ZEC12_TUNE | |
263 | def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT | |
264 | ||
265 | choice | |
266 | prompt "Tune code generation" | |
267 | default TUNE_DEFAULT | |
268 | help | |
269 | Cause the compiler to tune (-mtune) the generated code for a machine. | |
270 | This will make the code run faster on the selected machine but | |
271 | somewhat slower on other machines. | |
272 | This option only changes how the compiler emits instructions, not the | |
273 | selection of instructions itself, so the resulting kernel will run on | |
274 | all other machines. | |
275 | ||
276 | config TUNE_DEFAULT | |
277 | bool "Default" | |
278 | help | |
279 | Tune the generated code for the target processor for which the kernel | |
280 | will be compiled. | |
281 | ||
282 | config TUNE_G5 | |
283 | bool "System/390 model G5 and G6" | |
284 | ||
285 | config TUNE_Z900 | |
286 | bool "IBM zSeries model z800 and z900" | |
287 | ||
288 | config TUNE_Z990 | |
289 | bool "IBM zSeries model z890 and z990" | |
290 | ||
291 | config TUNE_Z9_109 | |
292 | bool "IBM System z9" | |
293 | ||
294 | config TUNE_Z10 | |
295 | bool "IBM System z10" | |
296 | ||
297 | config TUNE_Z196 | |
298 | bool "IBM zEnterprise 114 and 196" | |
299 | ||
300 | config TUNE_ZEC12 | |
301 | bool "IBM zBC12 and zEC12" | |
302 | ||
303 | endchoice | |
304 | ||
347a8dc3 | 305 | config 64BIT |
6f9a3c33 MS |
306 | def_bool y |
307 | prompt "64 bit kernel" | |
1da177e4 | 308 | help |
db81a23d | 309 | Select this option if you have an IBM z/Architecture machine |
1da177e4 LT |
310 | and want to use the 64 bit addressing mode. |
311 | ||
d9f7a745 | 312 | config 32BIT |
6f9a3c33 | 313 | def_bool y if !64BIT |
d9f7a745 | 314 | |
843c48fd JG |
315 | config COMPAT |
316 | def_bool y | |
317 | prompt "Kernel support for 31 bit emulation" | |
318 | depends on 64BIT | |
319 | select COMPAT_BINFMT_ELF if BINFMT_ELF | |
320 | select ARCH_WANT_OLD_COMPAT_IPC | |
7eddd99c | 321 | select COMPAT_OLD_SIGACTION |
843c48fd JG |
322 | help |
323 | Select this option if you want to enable your system kernel to | |
324 | handle system-calls from ELF binaries for 31 bit ESA. This option | |
325 | (and some other stuff like libraries and such) is needed for | |
326 | executing 31 bit applications. It is safe to say "Y". | |
327 | ||
328 | config SYSVIPC_COMPAT | |
329 | def_bool y if COMPAT && SYSVIPC | |
330 | ||
331 | config KEYS_COMPAT | |
332 | def_bool y if COMPAT && KEYS | |
333 | ||
1da177e4 | 334 | config SMP |
6f9a3c33 MS |
335 | def_bool y |
336 | prompt "Symmetric multi-processing support" | |
1da177e4 LT |
337 | ---help--- |
338 | This enables support for systems with more than one CPU. If you have | |
339 | a system with only one CPU, like most personal computers, say N. If | |
340 | you have a system with more than one CPU, say Y. | |
341 | ||
4a474157 | 342 | If you say N here, the kernel will run on uni- and multiprocessor |
1da177e4 LT |
343 | machines, but will use only one CPU of a multiprocessor machine. If |
344 | you say Y here, the kernel will run on many, but not all, | |
4a474157 | 345 | uniprocessor machines. On a uniprocessor machine, the kernel |
1da177e4 LT |
346 | will run faster if you say N here. |
347 | ||
03502faa AB |
348 | See also the SMP-HOWTO available at |
349 | <http://www.tldp.org/docs.html#howto>. | |
1da177e4 LT |
350 | |
351 | Even if you don't know what to do here, say Y. | |
352 | ||
353 | config NR_CPUS | |
8cb04be8 XVP |
354 | int "Maximum number of CPUs (2-256)" |
355 | range 2 256 | |
1da177e4 | 356 | depends on SMP |
057c5cb3 HC |
357 | default "32" if !64BIT |
358 | default "64" if 64BIT | |
1da177e4 LT |
359 | help |
360 | This allows you to specify the maximum number of CPUs which this | |
8cb04be8 | 361 | kernel will support. The maximum supported value is 256 and the |
1da177e4 LT |
362 | minimum value which makes sense is 2. |
363 | ||
364 | This is purely to save memory - each supported CPU adds | |
365 | approximately sixteen kilobytes to the kernel image. | |
366 | ||
367 | config HOTPLUG_CPU | |
6f9a3c33 MS |
368 | def_bool y |
369 | prompt "Support for hot-pluggable CPUs" | |
1da177e4 | 370 | depends on SMP |
1da177e4 LT |
371 | help |
372 | Say Y here to be able to turn CPUs off and on. CPUs | |
373 | can be controlled through /sys/devices/system/cpu/cpu#. | |
374 | Say N if you want to disable CPU hotplug. | |
375 | ||
8d11e021 | 376 | config SCHED_MC |
83a24e32 | 377 | def_bool n |
8d11e021 | 378 | |
4cb14bc8 | 379 | config SCHED_BOOK |
6f9a3c33 MS |
380 | def_bool y |
381 | prompt "Book scheduler support" | |
83a24e32 HC |
382 | depends on SMP |
383 | select SCHED_MC | |
4cb14bc8 HC |
384 | help |
385 | Book scheduler support improves the CPU scheduler's decision making | |
386 | when dealing with machines that have several books. | |
387 | ||
843c48fd JG |
388 | source kernel/Kconfig.preempt |
389 | ||
1da177e4 | 390 | config MATHEMU |
6f9a3c33 MS |
391 | def_bool y |
392 | prompt "IEEE FPU emulation" | |
1da177e4 LT |
393 | depends on MARCH_G5 |
394 | help | |
395 | This option is required for IEEE compliant floating point arithmetic | |
db81a23d | 396 | on older ESA/390 machines. Say Y unless you know your machine doesn't |
1da177e4 LT |
397 | need this. |
398 | ||
843c48fd | 399 | source kernel/Kconfig.hz |
1da177e4 | 400 | |
843c48fd | 401 | endmenu |
1da177e4 | 402 | |
843c48fd | 403 | menu "Memory setup" |
1d057720 | 404 | |
843c48fd | 405 | config ARCH_SPARSEMEM_ENABLE |
6f9a3c33 | 406 | def_bool y |
843c48fd JG |
407 | select SPARSEMEM_VMEMMAP_ENABLE |
408 | select SPARSEMEM_VMEMMAP | |
409 | select SPARSEMEM_STATIC if !64BIT | |
e65e1fc2 | 410 | |
843c48fd JG |
411 | config ARCH_SPARSEMEM_DEFAULT |
412 | def_bool y | |
1da177e4 | 413 | |
843c48fd JG |
414 | config ARCH_SELECT_MEMORY_MODEL |
415 | def_bool y | |
1da177e4 | 416 | |
843c48fd JG |
417 | config ARCH_ENABLE_MEMORY_HOTPLUG |
418 | def_bool y if SPARSEMEM | |
0efa4703 | 419 | |
843c48fd JG |
420 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
421 | def_bool y | |
e37f50e1 | 422 | |
ec66ad66 MS |
423 | config ARCH_ENABLE_SPLIT_PMD_PTLOCK |
424 | def_bool y | |
425 | depends on 64BIT | |
426 | ||
843c48fd JG |
427 | config FORCE_MAX_ZONEORDER |
428 | int | |
429 | default "9" | |
f861e405 | 430 | |
843c48fd | 431 | source "mm/Kconfig" |
1da177e4 LT |
432 | |
433 | config PACK_STACK | |
6f9a3c33 MS |
434 | def_bool y |
435 | prompt "Pack kernel stack" | |
1da177e4 LT |
436 | help |
437 | This option enables the compiler option -mkernel-backchain if it | |
438 | is available. If the option is available the compiler supports | |
439 | the new stack layout which dramatically reduces the minimum stack | |
440 | frame size. With an old compiler a non-leaf function needs a | |
441 | minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With | |
442 | -mkernel-backchain the minimum size drops to 16 byte on 31 bit | |
443 | and 24 byte on 64 bit. | |
444 | ||
445 | Say Y if you are unsure. | |
446 | ||
1da177e4 | 447 | config CHECK_STACK |
6f9a3c33 MS |
448 | def_bool y |
449 | prompt "Detect kernel stack overflow" | |
1da177e4 LT |
450 | help |
451 | This option enables the compiler option -mstack-guard and | |
452 | -mstack-size if they are available. If the compiler supports them | |
453 | it will emit additional code to each function prolog to trigger | |
454 | an illegal operation if the kernel stack is about to overflow. | |
455 | ||
456 | Say N if you are unsure. | |
457 | ||
458 | config STACK_GUARD | |
459 | int "Size of the guard area (128-1024)" | |
460 | range 128 1024 | |
461 | depends on CHECK_STACK | |
462 | default "256" | |
463 | help | |
464 | This allows you to specify the size of the guard area at the lower | |
465 | end of the kernel stack. If the kernel stack points into the guard | |
466 | area on function entry an illegal operation is triggered. The size | |
467 | needs to be a power of 2. Please keep in mind that the size of an | |
468 | interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. | |
469 | The minimum size for the stack guard should be 256 for 31 bit and | |
470 | 512 for 64 bit. | |
471 | ||
2c190da4 | 472 | config WARN_DYNAMIC_STACK |
6f9a3c33 | 473 | def_bool n |
2c190da4 | 474 | prompt "Emit compiler warnings for function with dynamic stack usage" |
1da177e4 | 475 | help |
2c190da4 JG |
476 | This option enables the compiler option -mwarn-dynamicstack. If the |
477 | compiler supports this options generates warnings for functions | |
478 | that dynamically allocate stack space using alloca. | |
1da177e4 LT |
479 | |
480 | Say N if you are unsure. | |
481 | ||
843c48fd | 482 | endmenu |
3f22ab27 | 483 | |
843c48fd | 484 | menu "I/O subsystem" |
1da177e4 | 485 | |
1da177e4 | 486 | config QDIO |
6f9a3c33 MS |
487 | def_tristate y |
488 | prompt "QDIO support" | |
1da177e4 | 489 | ---help--- |
8129ee16 | 490 | This driver provides the Queued Direct I/O base support for |
efca13bc | 491 | IBM System z. |
1da177e4 LT |
492 | |
493 | To compile this driver as a module, choose M here: the | |
494 | module will be called qdio. | |
495 | ||
496 | If unsure, say Y. | |
497 | ||
c8717a3d JG |
498 | menuconfig PCI |
499 | bool "PCI support" | |
500 | default n | |
501 | depends on 64BIT | |
c8717a3d JG |
502 | select PCI_MSI |
503 | help | |
504 | Enable PCI support. | |
505 | ||
506 | if PCI | |
507 | ||
508 | config PCI_NR_FUNCTIONS | |
509 | int "Maximum number of PCI functions (1-4096)" | |
510 | range 1 4096 | |
511 | default "64" | |
512 | help | |
513 | This allows you to specify the maximum number of PCI functions which | |
514 | this kernel will support. | |
515 | ||
1f44a225 MS |
516 | config PCI_NR_MSI |
517 | int "Maximum number of MSI interrupts (64-32768)" | |
518 | range 64 32768 | |
519 | default "256" | |
520 | help | |
521 | This defines the number of virtual interrupts the kernel will | |
522 | provide for MSI interrupts. If you configure your system to have | |
523 | too few drivers will fail to allocate MSI interrupts for all | |
524 | PCI devices. | |
525 | ||
c8717a3d JG |
526 | source "drivers/pci/Kconfig" |
527 | source "drivers/pci/pcie/Kconfig" | |
528 | source "drivers/pci/hotplug/Kconfig" | |
529 | ||
530 | endif # PCI | |
531 | ||
532 | config PCI_DOMAINS | |
533 | def_bool PCI | |
534 | ||
535 | config HAS_IOMEM | |
536 | def_bool PCI | |
537 | ||
538 | config IOMMU_HELPER | |
539 | def_bool PCI | |
540 | ||
541 | config HAS_DMA | |
542 | def_bool PCI | |
543 | select HAVE_DMA_API_DEBUG | |
544 | ||
545 | config NEED_SG_DMA_LENGTH | |
546 | def_bool PCI | |
547 | ||
548 | config HAVE_DMA_ATTRS | |
549 | def_bool PCI | |
550 | ||
91630032 JG |
551 | config NEED_DMA_MAP_STATE |
552 | def_bool PCI | |
553 | ||
9d92a7e1 | 554 | config CHSC_SCH |
d9c11b1e | 555 | def_tristate m |
6f9a3c33 | 556 | prompt "Support for CHSC subchannels" |
9d92a7e1 CH |
557 | help |
558 | This driver allows usage of CHSC subchannels. A CHSC subchannel | |
559 | is usually present on LPAR only. | |
560 | The driver creates a device /dev/chsc, which may be used to | |
561 | obtain I/O configuration information about the machine and | |
562 | to issue asynchronous chsc commands (DANGEROUS). | |
563 | You will usually only want to use this interface on a special | |
564 | LPAR designated for system management. | |
565 | ||
566 | To compile this driver as a module, choose M here: the | |
567 | module will be called chsc_sch. | |
568 | ||
569 | If unsure, say N. | |
570 | ||
1d1c8f78 SO |
571 | config SCM_BUS |
572 | def_bool y | |
573 | depends on 64BIT | |
574 | prompt "SCM bus driver" | |
575 | help | |
576 | Bus driver for Storage Class Memory. | |
577 | ||
eadb86ab SO |
578 | config EADM_SCH |
579 | def_tristate m | |
580 | prompt "Support for EADM subchannels" | |
581 | depends on SCM_BUS | |
582 | help | |
583 | This driver allows usage of EADM subchannels. EADM subchannels act | |
584 | as a communication vehicle for SCM increments. | |
585 | ||
586 | To compile this driver as a module, choose M here: the | |
587 | module will be called eadm_sch. | |
588 | ||
843c48fd JG |
589 | endmenu |
590 | ||
591 | menu "Dump support" | |
592 | ||
593 | config CRASH_DUMP | |
594 | bool "kernel crash dumps" | |
595 | depends on 64BIT && SMP | |
596 | select KEXEC | |
597 | help | |
598 | Generate crash dump after being started by kexec. | |
599 | Crash dump kernels are loaded in the main kernel with kexec-tools | |
600 | into a specially reserved region and then later executed after | |
601 | a crash by kdump/kexec. | |
843c48fd | 602 | Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. |
bf28a597 MH |
603 | This option also enables s390 zfcpdump. |
604 | See also <file:Documentation/s390/zfcpdump.txt> | |
843c48fd JG |
605 | |
606 | endmenu | |
607 | ||
608 | menu "Executable file formats / Emulations" | |
1da177e4 | 609 | |
1da177e4 LT |
610 | source "fs/Kconfig.binfmt" |
611 | ||
843c48fd JG |
612 | config SECCOMP |
613 | def_bool y | |
614 | prompt "Enable seccomp to safely compute untrusted bytecode" | |
615 | depends on PROC_FS | |
616 | help | |
617 | This kernel feature is useful for number crunching applications | |
618 | that may need to compute untrusted bytecode during their | |
619 | execution. By using pipes or other transports made available to | |
620 | the process as file descriptors supporting the read/write | |
621 | syscalls, it's possible to isolate those applications in | |
622 | their own address space using seccomp. Once seccomp is | |
623 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
624 | and the task is only allowed to execute a few safe syscalls | |
625 | defined by each seccomp mode. | |
626 | ||
627 | If unsure, say Y. | |
628 | ||
629 | endmenu | |
630 | ||
631 | menu "Power Management" | |
632 | ||
633 | config ARCH_HIBERNATION_POSSIBLE | |
634 | def_bool y if 64BIT | |
635 | ||
636 | source "kernel/power/Kconfig" | |
637 | ||
638 | endmenu | |
639 | ||
640 | source "net/Kconfig" | |
641 | ||
642 | config PCMCIA | |
643 | def_bool n | |
644 | ||
645 | config CCW | |
646 | def_bool y | |
647 | ||
648 | source "drivers/Kconfig" | |
649 | ||
650 | source "fs/Kconfig" | |
651 | ||
652 | source "arch/s390/Kconfig.debug" | |
653 | ||
654 | source "security/Kconfig" | |
655 | ||
656 | source "crypto/Kconfig" | |
657 | ||
658 | source "lib/Kconfig" | |
659 | ||
660 | menu "Virtualization" | |
684de39b | 661 | |
1da177e4 | 662 | config PFAULT |
6f9a3c33 MS |
663 | def_bool y |
664 | prompt "Pseudo page fault support" | |
1da177e4 LT |
665 | help |
666 | Select this option, if you want to use PFAULT pseudo page fault | |
667 | handling under VM. If running native or in LPAR, this option | |
668 | has no effect. If your VM does not support PFAULT, PAGEEX | |
669 | pseudo page fault handling will be used. | |
670 | Note that VM 4.2 supports PFAULT but has a bug in its | |
671 | implementation that causes some problems. | |
672 | Everybody who wants to run Linux under VM != VM4.2 should select | |
673 | this option. | |
674 | ||
675 | config SHARED_KERNEL | |
0eccc783 HC |
676 | bool "VM shared kernel support" |
677 | depends on !JUMP_LABEL | |
1da177e4 LT |
678 | help |
679 | Select this option, if you want to share the text segment of the | |
680 | Linux kernel between different VM guests. This reduces memory | |
681 | usage with lots of guests but greatly increases kernel size. | |
9c9c1761 HC |
682 | Also if a kernel was IPL'ed from a shared segment the kexec system |
683 | call will not work. | |
1da177e4 LT |
684 | You should only select this option if you know what you are |
685 | doing and want to exploit this feature. | |
686 | ||
687 | config CMM | |
6f9a3c33 MS |
688 | def_tristate n |
689 | prompt "Cooperative memory management" | |
1da177e4 LT |
690 | help |
691 | Select this option, if you want to enable the kernel interface | |
692 | to reduce the memory size of the system. This is accomplished | |
693 | by allocating pages of memory and put them "on hold". This only | |
694 | makes sense for a system running under VM where the unused pages | |
695 | will be reused by VM for other guest systems. The interface | |
696 | allows an external monitor to balance memory of many systems. | |
697 | Everybody who wants to run Linux under VM should select this | |
698 | option. | |
699 | ||
1da177e4 | 700 | config CMM_IUCV |
6f9a3c33 MS |
701 | def_bool y |
702 | prompt "IUCV special message interface to cooperative memory management" | |
1da177e4 LT |
703 | depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) |
704 | help | |
705 | Select this option to enable the special message interface to | |
706 | the cooperative memory management. | |
707 | ||
1da177e4 | 708 | config APPLDATA_BASE |
6f9a3c33 MS |
709 | def_bool n |
710 | prompt "Linux - VM Monitor Stream, base infrastructure" | |
c185b783 | 711 | depends on PROC_FS |
1da177e4 LT |
712 | help |
713 | This provides a kernel interface for creating and updating z/VM APPLDATA | |
714 | monitor records. The monitor records are updated at certain time | |
715 | intervals, once the timer is started. | |
716 | Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, | |
717 | i.e. enables or disables monitoring on the Linux side. | |
718 | A custom interval value (in seconds) can be written to | |
719 | /proc/appldata/interval. | |
720 | ||
721 | Defaults are 60 seconds interval and timer off. | |
722 | The /proc entries can also be read from, showing the current settings. | |
723 | ||
724 | config APPLDATA_MEM | |
6f9a3c33 MS |
725 | def_tristate m |
726 | prompt "Monitor memory management statistics" | |
62fb2ba3 | 727 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
1da177e4 LT |
728 | help |
729 | This provides memory management related data to the Linux - VM Monitor | |
730 | Stream, like paging/swapping rate, memory utilisation, etc. | |
731 | Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM | |
732 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
733 | on the z/VM side. | |
734 | ||
735 | Default is disabled. | |
736 | The /proc entry can also be read from, showing the current settings. | |
737 | ||
738 | This can also be compiled as a module, which will be called | |
739 | appldata_mem.o. | |
740 | ||
741 | config APPLDATA_OS | |
6f9a3c33 MS |
742 | def_tristate m |
743 | prompt "Monitor OS statistics" | |
1da177e4 LT |
744 | depends on APPLDATA_BASE |
745 | help | |
746 | This provides OS related data to the Linux - VM Monitor Stream, like | |
747 | CPU utilisation, etc. | |
748 | Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM | |
749 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
750 | on the z/VM side. | |
751 | ||
752 | Default is disabled. | |
753 | This can also be compiled as a module, which will be called | |
754 | appldata_os.o. | |
755 | ||
756 | config APPLDATA_NET_SUM | |
6f9a3c33 MS |
757 | def_tristate m |
758 | prompt "Monitor overall network statistics" | |
70193af9 | 759 | depends on APPLDATA_BASE && NET |
1da177e4 LT |
760 | help |
761 | This provides network related data to the Linux - VM Monitor Stream, | |
762 | currently there is only a total sum of network I/O statistics, no | |
763 | per-interface data. | |
764 | Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM | |
765 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
766 | on the z/VM side. | |
767 | ||
768 | Default is disabled. | |
769 | This can also be compiled as a module, which will be called | |
770 | appldata_net_sum.o. | |
771 | ||
24bbb1fa | 772 | config S390_HYPFS_FS |
6f9a3c33 MS |
773 | def_bool y |
774 | prompt "s390 hypervisor file system support" | |
24bbb1fa | 775 | select SYS_HYPERVISOR |
24bbb1fa MH |
776 | help |
777 | This is a virtual file system intended to provide accounting | |
778 | information in an s390 hypervisor environment. | |
779 | ||
843c48fd | 780 | source "arch/s390/kvm/Kconfig" |
411ed322 | 781 | |
fa587743 | 782 | config S390_GUEST |
6f9a3c33 | 783 | def_bool y |
510cf5a6 KC |
784 | prompt "s390 support for virtio devices" |
785 | depends on 64BIT | |
79b6f7fb | 786 | select TTY |
80629b0b | 787 | select VIRTUALIZATION |
fa587743 | 788 | select VIRTIO |
faeba830 | 789 | select VIRTIO_CONSOLE |
fa587743 | 790 | help |
bdd1fc27 CH |
791 | Enabling this option adds support for virtio based paravirtual device |
792 | drivers on s390. | |
1da177e4 | 793 | |
20766c08 | 794 | Select this option if you want to run the kernel as a guest under |
bdd1fc27 | 795 | the KVM hypervisor. |
155af2f9 HJP |
796 | |
797 | endmenu |