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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 | ||
c8717a3d JG |
55 | config NO_IOPORT |
56 | def_bool y | |
57 | ||
58 | config PCI_QUIRKS | |
59 | def_bool n | |
60 | ||
347a8dc3 | 61 | config S390 |
61d48c2c | 62 | def_bool y |
ff38df37 | 63 | select ARCH_DISCARD_MEMBLOCK |
0e0d04a8 | 64 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
93bead43 | 65 | select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS |
0e0d04a8 | 66 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
6beb0009 TG |
67 | select ARCH_INLINE_READ_LOCK |
68 | select ARCH_INLINE_READ_LOCK_BH | |
69 | select ARCH_INLINE_READ_LOCK_IRQ | |
70 | select ARCH_INLINE_READ_LOCK_IRQSAVE | |
0e0d04a8 | 71 | select ARCH_INLINE_READ_TRYLOCK |
6beb0009 TG |
72 | select ARCH_INLINE_READ_UNLOCK |
73 | select ARCH_INLINE_READ_UNLOCK_BH | |
74 | select ARCH_INLINE_READ_UNLOCK_IRQ | |
75 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE | |
0e0d04a8 HC |
76 | select ARCH_INLINE_SPIN_LOCK |
77 | select ARCH_INLINE_SPIN_LOCK_BH | |
78 | select ARCH_INLINE_SPIN_LOCK_IRQ | |
79 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE | |
80 | select ARCH_INLINE_SPIN_TRYLOCK | |
81 | select ARCH_INLINE_SPIN_TRYLOCK_BH | |
82 | select ARCH_INLINE_SPIN_UNLOCK | |
83 | select ARCH_INLINE_SPIN_UNLOCK_BH | |
84 | select ARCH_INLINE_SPIN_UNLOCK_IRQ | |
85 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE | |
6beb0009 TG |
86 | select ARCH_INLINE_WRITE_LOCK |
87 | select ARCH_INLINE_WRITE_LOCK_BH | |
88 | select ARCH_INLINE_WRITE_LOCK_IRQ | |
89 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE | |
0e0d04a8 | 90 | select ARCH_INLINE_WRITE_TRYLOCK |
6beb0009 TG |
91 | select ARCH_INLINE_WRITE_UNLOCK |
92 | select ARCH_INLINE_WRITE_UNLOCK_BH | |
93 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | |
94 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | |
0e0d04a8 | 95 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION |
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 HC |
105 | select HAVE_ALIGNED_STRUCT_PAGE if SLUB |
106 | select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 | |
c63cb468 | 107 | select HAVE_ARCH_SECCOMP_FILTER |
0e0d04a8 HC |
108 | select HAVE_ARCH_TRACEHOOK |
109 | select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT | |
110 | select HAVE_BPF_JIT if 64BIT && PACK_STACK | |
111 | select HAVE_CMPXCHG_DOUBLE | |
112 | select HAVE_CMPXCHG_LOCAL | |
113 | select HAVE_C_RECORDMCOUNT | |
114 | select HAVE_DEBUG_KMEMLEAK | |
115 | select HAVE_DYNAMIC_FTRACE | |
116 | select HAVE_FTRACE_MCOUNT_RECORD | |
117 | select HAVE_FUNCTION_GRAPH_TRACER | |
118 | select HAVE_FUNCTION_TRACER | |
119 | select HAVE_FUNCTION_TRACE_MCOUNT_TEST | |
03b8c7b6 | 120 | select HAVE_FUTEX_CMPXCHG if FUTEX |
0e0d04a8 HC |
121 | select HAVE_KERNEL_BZIP2 |
122 | select HAVE_KERNEL_GZIP | |
8e2872ce | 123 | select HAVE_KERNEL_LZ4 |
0e0d04a8 HC |
124 | select HAVE_KERNEL_LZMA |
125 | select HAVE_KERNEL_LZO | |
126 | select HAVE_KERNEL_XZ | |
127 | select HAVE_KPROBES | |
128 | select HAVE_KRETPROBES | |
129 | select HAVE_KVM if 64BIT | |
130 | select HAVE_MEMBLOCK | |
131 | select HAVE_MEMBLOCK_NODE_MAP | |
786d35d4 | 132 | select HAVE_MOD_ARCH_SPECIFIC |
0e0d04a8 HC |
133 | select HAVE_OPROFILE |
134 | select HAVE_PERF_EVENTS | |
135 | select HAVE_REGS_AND_STACK_ACCESS_API | |
136 | select HAVE_SYSCALL_TRACEPOINTS | |
0e0d04a8 HC |
137 | select HAVE_UID16 if 32BIT |
138 | select HAVE_VIRT_CPU_ACCOUNTING | |
0e0d04a8 | 139 | select KTIME_SCALAR if 32BIT |
786d35d4 | 140 | select MODULES_USE_ELF_RELA |
7eddd99c | 141 | select OLD_SIGACTION |
93bead43 | 142 | select OLD_SIGSUSPEND3 |
0e0d04a8 | 143 | select SYSCTL_EXCEPTION_TRACE |
0e0d04a8 | 144 | select VIRT_CPU_ACCOUNTING |
93bead43 | 145 | select VIRT_TO_BUS |
1da177e4 | 146 | |
fca3e357 | 147 | config SCHED_OMIT_FRAME_POINTER |
6f9a3c33 | 148 | def_bool y |
fca3e357 | 149 | |
1da177e4 LT |
150 | source "init/Kconfig" |
151 | ||
dc52ddc0 MH |
152 | source "kernel/Kconfig.freezer" |
153 | ||
843c48fd JG |
154 | menu "Processor type and features" |
155 | ||
156 | config HAVE_MARCH_Z900_FEATURES | |
157 | def_bool n | |
158 | ||
159 | config HAVE_MARCH_Z990_FEATURES | |
160 | def_bool n | |
161 | select HAVE_MARCH_Z900_FEATURES | |
162 | ||
163 | config HAVE_MARCH_Z9_109_FEATURES | |
164 | def_bool n | |
165 | select HAVE_MARCH_Z990_FEATURES | |
166 | ||
167 | config HAVE_MARCH_Z10_FEATURES | |
168 | def_bool n | |
169 | select HAVE_MARCH_Z9_109_FEATURES | |
170 | ||
171 | config HAVE_MARCH_Z196_FEATURES | |
172 | def_bool n | |
173 | select HAVE_MARCH_Z10_FEATURES | |
174 | ||
991c1505 HC |
175 | config HAVE_MARCH_ZEC12_FEATURES |
176 | def_bool n | |
177 | select HAVE_MARCH_Z196_FEATURES | |
178 | ||
843c48fd JG |
179 | choice |
180 | prompt "Processor type" | |
181 | default MARCH_G5 | |
182 | ||
183 | config MARCH_G5 | |
184 | bool "System/390 model G5 and G6" | |
185 | depends on !64BIT | |
186 | help | |
187 | Select this to build a 31 bit kernel that works | |
188 | on all ESA/390 and z/Architecture machines. | |
1da177e4 | 189 | |
843c48fd JG |
190 | config MARCH_Z900 |
191 | bool "IBM zSeries model z800 and z900" | |
192 | select HAVE_MARCH_Z900_FEATURES if 64BIT | |
193 | help | |
194 | Select this to enable optimizations for model z800/z900 (2064 and | |
195 | 2066 series). This will enable some optimizations that are not | |
196 | available on older ESA/390 (31 Bit) only CPUs. | |
197 | ||
198 | config MARCH_Z990 | |
199 | bool "IBM zSeries model z890 and z990" | |
200 | select HAVE_MARCH_Z990_FEATURES if 64BIT | |
201 | help | |
202 | Select this to enable optimizations for model z890/z990 (2084 and | |
203 | 2086 series). The kernel will be slightly faster but will not work | |
204 | on older machines. | |
205 | ||
206 | config MARCH_Z9_109 | |
207 | bool "IBM System z9" | |
208 | select HAVE_MARCH_Z9_109_FEATURES if 64BIT | |
209 | help | |
210 | Select this to enable optimizations for IBM System z9 (2094 and | |
211 | 2096 series). The kernel will be slightly faster but will not work | |
212 | on older machines. | |
213 | ||
214 | config MARCH_Z10 | |
215 | bool "IBM System z10" | |
216 | select HAVE_MARCH_Z10_FEATURES if 64BIT | |
217 | help | |
218 | Select this to enable optimizations for IBM System z10 (2097 and | |
219 | 2098 series). The kernel will be slightly faster but will not work | |
220 | on older machines. | |
221 | ||
222 | config MARCH_Z196 | |
223 | bool "IBM zEnterprise 114 and 196" | |
224 | select HAVE_MARCH_Z196_FEATURES if 64BIT | |
225 | help | |
226 | Select this to enable optimizations for IBM zEnterprise 114 and 196 | |
227 | (2818 and 2817 series). The kernel will be slightly faster but will | |
228 | not work on older machines. | |
1da177e4 | 229 | |
991c1505 | 230 | config MARCH_ZEC12 |
59471227 | 231 | bool "IBM zBC12 and zEC12" |
991c1505 HC |
232 | select HAVE_MARCH_ZEC12_FEATURES if 64BIT |
233 | help | |
59471227 HC |
234 | Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and |
235 | 2827 series). The kernel will be slightly faster but will not work on | |
236 | older machines. | |
991c1505 | 237 | |
843c48fd | 238 | endchoice |
1da177e4 | 239 | |
1db9e051 HC |
240 | config MARCH_G5_TUNE |
241 | def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT | |
242 | ||
243 | config MARCH_Z900_TUNE | |
244 | def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT | |
245 | ||
246 | config MARCH_Z990_TUNE | |
247 | def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT | |
248 | ||
249 | config MARCH_Z9_109_TUNE | |
250 | def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT | |
251 | ||
252 | config MARCH_Z10_TUNE | |
253 | def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT | |
254 | ||
255 | config MARCH_Z196_TUNE | |
256 | def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT | |
257 | ||
258 | config MARCH_ZEC12_TUNE | |
259 | def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT | |
260 | ||
261 | choice | |
262 | prompt "Tune code generation" | |
263 | default TUNE_DEFAULT | |
264 | help | |
265 | Cause the compiler to tune (-mtune) the generated code for a machine. | |
266 | This will make the code run faster on the selected machine but | |
267 | somewhat slower on other machines. | |
268 | This option only changes how the compiler emits instructions, not the | |
269 | selection of instructions itself, so the resulting kernel will run on | |
270 | all other machines. | |
271 | ||
272 | config TUNE_DEFAULT | |
273 | bool "Default" | |
274 | help | |
275 | Tune the generated code for the target processor for which the kernel | |
276 | will be compiled. | |
277 | ||
278 | config TUNE_G5 | |
279 | bool "System/390 model G5 and G6" | |
280 | ||
281 | config TUNE_Z900 | |
282 | bool "IBM zSeries model z800 and z900" | |
283 | ||
284 | config TUNE_Z990 | |
285 | bool "IBM zSeries model z890 and z990" | |
286 | ||
287 | config TUNE_Z9_109 | |
288 | bool "IBM System z9" | |
289 | ||
290 | config TUNE_Z10 | |
291 | bool "IBM System z10" | |
292 | ||
293 | config TUNE_Z196 | |
294 | bool "IBM zEnterprise 114 and 196" | |
295 | ||
296 | config TUNE_ZEC12 | |
297 | bool "IBM zBC12 and zEC12" | |
298 | ||
299 | endchoice | |
300 | ||
347a8dc3 | 301 | config 64BIT |
6f9a3c33 MS |
302 | def_bool y |
303 | prompt "64 bit kernel" | |
1da177e4 | 304 | help |
db81a23d | 305 | Select this option if you have an IBM z/Architecture machine |
1da177e4 LT |
306 | and want to use the 64 bit addressing mode. |
307 | ||
d9f7a745 | 308 | config 32BIT |
6f9a3c33 | 309 | def_bool y if !64BIT |
d9f7a745 | 310 | |
843c48fd JG |
311 | config COMPAT |
312 | def_bool y | |
313 | prompt "Kernel support for 31 bit emulation" | |
314 | depends on 64BIT | |
315 | select COMPAT_BINFMT_ELF if BINFMT_ELF | |
316 | select ARCH_WANT_OLD_COMPAT_IPC | |
7eddd99c | 317 | select COMPAT_OLD_SIGACTION |
843c48fd JG |
318 | help |
319 | Select this option if you want to enable your system kernel to | |
320 | handle system-calls from ELF binaries for 31 bit ESA. This option | |
321 | (and some other stuff like libraries and such) is needed for | |
322 | executing 31 bit applications. It is safe to say "Y". | |
323 | ||
324 | config SYSVIPC_COMPAT | |
325 | def_bool y if COMPAT && SYSVIPC | |
326 | ||
327 | config KEYS_COMPAT | |
328 | def_bool y if COMPAT && KEYS | |
329 | ||
1da177e4 | 330 | config SMP |
6f9a3c33 MS |
331 | def_bool y |
332 | prompt "Symmetric multi-processing support" | |
1da177e4 LT |
333 | ---help--- |
334 | This enables support for systems with more than one CPU. If you have | |
335 | a system with only one CPU, like most personal computers, say N. If | |
336 | you have a system with more than one CPU, say Y. | |
337 | ||
4a474157 | 338 | If you say N here, the kernel will run on uni- and multiprocessor |
1da177e4 LT |
339 | machines, but will use only one CPU of a multiprocessor machine. If |
340 | you say Y here, the kernel will run on many, but not all, | |
4a474157 | 341 | uniprocessor machines. On a uniprocessor machine, the kernel |
1da177e4 LT |
342 | will run faster if you say N here. |
343 | ||
03502faa AB |
344 | See also the SMP-HOWTO available at |
345 | <http://www.tldp.org/docs.html#howto>. | |
1da177e4 LT |
346 | |
347 | Even if you don't know what to do here, say Y. | |
348 | ||
349 | config NR_CPUS | |
8cb04be8 XVP |
350 | int "Maximum number of CPUs (2-256)" |
351 | range 2 256 | |
1da177e4 | 352 | depends on SMP |
057c5cb3 HC |
353 | default "32" if !64BIT |
354 | default "64" if 64BIT | |
1da177e4 LT |
355 | help |
356 | This allows you to specify the maximum number of CPUs which this | |
8cb04be8 | 357 | kernel will support. The maximum supported value is 256 and the |
1da177e4 LT |
358 | minimum value which makes sense is 2. |
359 | ||
360 | This is purely to save memory - each supported CPU adds | |
361 | approximately sixteen kilobytes to the kernel image. | |
362 | ||
363 | config HOTPLUG_CPU | |
6f9a3c33 MS |
364 | def_bool y |
365 | prompt "Support for hot-pluggable CPUs" | |
1da177e4 | 366 | depends on SMP |
1da177e4 LT |
367 | help |
368 | Say Y here to be able to turn CPUs off and on. CPUs | |
369 | can be controlled through /sys/devices/system/cpu/cpu#. | |
370 | Say N if you want to disable CPU hotplug. | |
371 | ||
8d11e021 | 372 | config SCHED_MC |
83a24e32 | 373 | def_bool n |
8d11e021 | 374 | |
4cb14bc8 | 375 | config SCHED_BOOK |
6f9a3c33 MS |
376 | def_bool y |
377 | prompt "Book scheduler support" | |
83a24e32 HC |
378 | depends on SMP |
379 | select SCHED_MC | |
4cb14bc8 HC |
380 | help |
381 | Book scheduler support improves the CPU scheduler's decision making | |
382 | when dealing with machines that have several books. | |
383 | ||
843c48fd JG |
384 | source kernel/Kconfig.preempt |
385 | ||
1da177e4 | 386 | config MATHEMU |
6f9a3c33 MS |
387 | def_bool y |
388 | prompt "IEEE FPU emulation" | |
1da177e4 LT |
389 | depends on MARCH_G5 |
390 | help | |
391 | This option is required for IEEE compliant floating point arithmetic | |
db81a23d | 392 | on older ESA/390 machines. Say Y unless you know your machine doesn't |
1da177e4 LT |
393 | need this. |
394 | ||
843c48fd | 395 | source kernel/Kconfig.hz |
1da177e4 | 396 | |
843c48fd | 397 | endmenu |
1da177e4 | 398 | |
843c48fd | 399 | menu "Memory setup" |
1d057720 | 400 | |
843c48fd | 401 | config ARCH_SPARSEMEM_ENABLE |
6f9a3c33 | 402 | def_bool y |
843c48fd JG |
403 | select SPARSEMEM_VMEMMAP_ENABLE |
404 | select SPARSEMEM_VMEMMAP | |
405 | select SPARSEMEM_STATIC if !64BIT | |
e65e1fc2 | 406 | |
843c48fd JG |
407 | config ARCH_SPARSEMEM_DEFAULT |
408 | def_bool y | |
1da177e4 | 409 | |
843c48fd JG |
410 | config ARCH_SELECT_MEMORY_MODEL |
411 | def_bool y | |
1da177e4 | 412 | |
843c48fd JG |
413 | config ARCH_ENABLE_MEMORY_HOTPLUG |
414 | def_bool y if SPARSEMEM | |
0efa4703 | 415 | |
843c48fd JG |
416 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
417 | def_bool y | |
e37f50e1 | 418 | |
843c48fd JG |
419 | config FORCE_MAX_ZONEORDER |
420 | int | |
421 | default "9" | |
f861e405 | 422 | |
843c48fd | 423 | source "mm/Kconfig" |
1da177e4 LT |
424 | |
425 | config PACK_STACK | |
6f9a3c33 MS |
426 | def_bool y |
427 | prompt "Pack kernel stack" | |
1da177e4 LT |
428 | help |
429 | This option enables the compiler option -mkernel-backchain if it | |
430 | is available. If the option is available the compiler supports | |
431 | the new stack layout which dramatically reduces the minimum stack | |
432 | frame size. With an old compiler a non-leaf function needs a | |
433 | minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With | |
434 | -mkernel-backchain the minimum size drops to 16 byte on 31 bit | |
435 | and 24 byte on 64 bit. | |
436 | ||
437 | Say Y if you are unsure. | |
438 | ||
1da177e4 | 439 | config CHECK_STACK |
6f9a3c33 MS |
440 | def_bool y |
441 | prompt "Detect kernel stack overflow" | |
1da177e4 LT |
442 | help |
443 | This option enables the compiler option -mstack-guard and | |
444 | -mstack-size if they are available. If the compiler supports them | |
445 | it will emit additional code to each function prolog to trigger | |
446 | an illegal operation if the kernel stack is about to overflow. | |
447 | ||
448 | Say N if you are unsure. | |
449 | ||
450 | config STACK_GUARD | |
451 | int "Size of the guard area (128-1024)" | |
452 | range 128 1024 | |
453 | depends on CHECK_STACK | |
454 | default "256" | |
455 | help | |
456 | This allows you to specify the size of the guard area at the lower | |
457 | end of the kernel stack. If the kernel stack points into the guard | |
458 | area on function entry an illegal operation is triggered. The size | |
459 | needs to be a power of 2. Please keep in mind that the size of an | |
460 | interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. | |
461 | The minimum size for the stack guard should be 256 for 31 bit and | |
462 | 512 for 64 bit. | |
463 | ||
2c190da4 | 464 | config WARN_DYNAMIC_STACK |
6f9a3c33 | 465 | def_bool n |
2c190da4 | 466 | prompt "Emit compiler warnings for function with dynamic stack usage" |
1da177e4 | 467 | help |
2c190da4 JG |
468 | This option enables the compiler option -mwarn-dynamicstack. If the |
469 | compiler supports this options generates warnings for functions | |
470 | that dynamically allocate stack space using alloca. | |
1da177e4 LT |
471 | |
472 | Say N if you are unsure. | |
473 | ||
843c48fd | 474 | endmenu |
3f22ab27 | 475 | |
843c48fd | 476 | menu "I/O subsystem" |
1da177e4 | 477 | |
1da177e4 | 478 | config QDIO |
6f9a3c33 MS |
479 | def_tristate y |
480 | prompt "QDIO support" | |
1da177e4 | 481 | ---help--- |
8129ee16 | 482 | This driver provides the Queued Direct I/O base support for |
efca13bc | 483 | IBM System z. |
1da177e4 LT |
484 | |
485 | To compile this driver as a module, choose M here: the | |
486 | module will be called qdio. | |
487 | ||
488 | If unsure, say Y. | |
489 | ||
c8717a3d JG |
490 | menuconfig PCI |
491 | bool "PCI support" | |
492 | default n | |
493 | depends on 64BIT | |
c8717a3d JG |
494 | select PCI_MSI |
495 | help | |
496 | Enable PCI support. | |
497 | ||
498 | if PCI | |
499 | ||
500 | config PCI_NR_FUNCTIONS | |
501 | int "Maximum number of PCI functions (1-4096)" | |
502 | range 1 4096 | |
503 | default "64" | |
504 | help | |
505 | This allows you to specify the maximum number of PCI functions which | |
506 | this kernel will support. | |
507 | ||
1f44a225 MS |
508 | config PCI_NR_MSI |
509 | int "Maximum number of MSI interrupts (64-32768)" | |
510 | range 64 32768 | |
511 | default "256" | |
512 | help | |
513 | This defines the number of virtual interrupts the kernel will | |
514 | provide for MSI interrupts. If you configure your system to have | |
515 | too few drivers will fail to allocate MSI interrupts for all | |
516 | PCI devices. | |
517 | ||
c8717a3d JG |
518 | source "drivers/pci/Kconfig" |
519 | source "drivers/pci/pcie/Kconfig" | |
520 | source "drivers/pci/hotplug/Kconfig" | |
521 | ||
522 | endif # PCI | |
523 | ||
524 | config PCI_DOMAINS | |
525 | def_bool PCI | |
526 | ||
527 | config HAS_IOMEM | |
528 | def_bool PCI | |
529 | ||
530 | config IOMMU_HELPER | |
531 | def_bool PCI | |
532 | ||
533 | config HAS_DMA | |
534 | def_bool PCI | |
535 | select HAVE_DMA_API_DEBUG | |
536 | ||
537 | config NEED_SG_DMA_LENGTH | |
538 | def_bool PCI | |
539 | ||
540 | config HAVE_DMA_ATTRS | |
541 | def_bool PCI | |
542 | ||
91630032 JG |
543 | config NEED_DMA_MAP_STATE |
544 | def_bool PCI | |
545 | ||
9d92a7e1 | 546 | config CHSC_SCH |
d9c11b1e | 547 | def_tristate m |
6f9a3c33 | 548 | prompt "Support for CHSC subchannels" |
9d92a7e1 CH |
549 | help |
550 | This driver allows usage of CHSC subchannels. A CHSC subchannel | |
551 | is usually present on LPAR only. | |
552 | The driver creates a device /dev/chsc, which may be used to | |
553 | obtain I/O configuration information about the machine and | |
554 | to issue asynchronous chsc commands (DANGEROUS). | |
555 | You will usually only want to use this interface on a special | |
556 | LPAR designated for system management. | |
557 | ||
558 | To compile this driver as a module, choose M here: the | |
559 | module will be called chsc_sch. | |
560 | ||
561 | If unsure, say N. | |
562 | ||
1d1c8f78 SO |
563 | config SCM_BUS |
564 | def_bool y | |
565 | depends on 64BIT | |
566 | prompt "SCM bus driver" | |
567 | help | |
568 | Bus driver for Storage Class Memory. | |
569 | ||
eadb86ab SO |
570 | config EADM_SCH |
571 | def_tristate m | |
572 | prompt "Support for EADM subchannels" | |
573 | depends on SCM_BUS | |
574 | help | |
575 | This driver allows usage of EADM subchannels. EADM subchannels act | |
576 | as a communication vehicle for SCM increments. | |
577 | ||
578 | To compile this driver as a module, choose M here: the | |
579 | module will be called eadm_sch. | |
580 | ||
843c48fd JG |
581 | endmenu |
582 | ||
583 | menu "Dump support" | |
584 | ||
585 | config CRASH_DUMP | |
586 | bool "kernel crash dumps" | |
587 | depends on 64BIT && SMP | |
588 | select KEXEC | |
6f79d332 | 589 | select ZFCPDUMP |
843c48fd JG |
590 | help |
591 | Generate crash dump after being started by kexec. | |
592 | Crash dump kernels are loaded in the main kernel with kexec-tools | |
593 | into a specially reserved region and then later executed after | |
594 | a crash by kdump/kexec. | |
595 | For more details see Documentation/kdump/kdump.txt | |
596 | ||
597 | config ZFCPDUMP | |
598 | def_bool n | |
599 | prompt "zfcpdump support" | |
05e9181b | 600 | depends on 64BIT && SMP |
843c48fd JG |
601 | help |
602 | Select this option if you want to build an zfcpdump enabled kernel. | |
603 | Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. | |
604 | ||
605 | endmenu | |
606 | ||
607 | menu "Executable file formats / Emulations" | |
1da177e4 | 608 | |
1da177e4 LT |
609 | source "fs/Kconfig.binfmt" |
610 | ||
843c48fd JG |
611 | config SECCOMP |
612 | def_bool y | |
613 | prompt "Enable seccomp to safely compute untrusted bytecode" | |
614 | depends on PROC_FS | |
615 | help | |
616 | This kernel feature is useful for number crunching applications | |
617 | that may need to compute untrusted bytecode during their | |
618 | execution. By using pipes or other transports made available to | |
619 | the process as file descriptors supporting the read/write | |
620 | syscalls, it's possible to isolate those applications in | |
621 | their own address space using seccomp. Once seccomp is | |
622 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
623 | and the task is only allowed to execute a few safe syscalls | |
624 | defined by each seccomp mode. | |
625 | ||
626 | If unsure, say Y. | |
627 | ||
628 | endmenu | |
629 | ||
630 | menu "Power Management" | |
631 | ||
632 | config ARCH_HIBERNATION_POSSIBLE | |
633 | def_bool y if 64BIT | |
634 | ||
635 | source "kernel/power/Kconfig" | |
636 | ||
637 | endmenu | |
638 | ||
639 | source "net/Kconfig" | |
640 | ||
641 | config PCMCIA | |
642 | def_bool n | |
643 | ||
644 | config CCW | |
645 | def_bool y | |
646 | ||
647 | source "drivers/Kconfig" | |
648 | ||
649 | source "fs/Kconfig" | |
650 | ||
651 | source "arch/s390/Kconfig.debug" | |
652 | ||
653 | source "security/Kconfig" | |
654 | ||
655 | source "crypto/Kconfig" | |
656 | ||
657 | source "lib/Kconfig" | |
658 | ||
659 | menu "Virtualization" | |
684de39b | 660 | |
1da177e4 | 661 | config PFAULT |
6f9a3c33 MS |
662 | def_bool y |
663 | prompt "Pseudo page fault support" | |
1da177e4 LT |
664 | help |
665 | Select this option, if you want to use PFAULT pseudo page fault | |
666 | handling under VM. If running native or in LPAR, this option | |
667 | has no effect. If your VM does not support PFAULT, PAGEEX | |
668 | pseudo page fault handling will be used. | |
669 | Note that VM 4.2 supports PFAULT but has a bug in its | |
670 | implementation that causes some problems. | |
671 | Everybody who wants to run Linux under VM != VM4.2 should select | |
672 | this option. | |
673 | ||
674 | config SHARED_KERNEL | |
0eccc783 HC |
675 | bool "VM shared kernel support" |
676 | depends on !JUMP_LABEL | |
1da177e4 LT |
677 | help |
678 | Select this option, if you want to share the text segment of the | |
679 | Linux kernel between different VM guests. This reduces memory | |
680 | usage with lots of guests but greatly increases kernel size. | |
9c9c1761 HC |
681 | Also if a kernel was IPL'ed from a shared segment the kexec system |
682 | call will not work. | |
1da177e4 LT |
683 | You should only select this option if you know what you are |
684 | doing and want to exploit this feature. | |
685 | ||
686 | config CMM | |
6f9a3c33 MS |
687 | def_tristate n |
688 | prompt "Cooperative memory management" | |
1da177e4 LT |
689 | help |
690 | Select this option, if you want to enable the kernel interface | |
691 | to reduce the memory size of the system. This is accomplished | |
692 | by allocating pages of memory and put them "on hold". This only | |
693 | makes sense for a system running under VM where the unused pages | |
694 | will be reused by VM for other guest systems. The interface | |
695 | allows an external monitor to balance memory of many systems. | |
696 | Everybody who wants to run Linux under VM should select this | |
697 | option. | |
698 | ||
1da177e4 | 699 | config CMM_IUCV |
6f9a3c33 MS |
700 | def_bool y |
701 | prompt "IUCV special message interface to cooperative memory management" | |
1da177e4 LT |
702 | depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) |
703 | help | |
704 | Select this option to enable the special message interface to | |
705 | the cooperative memory management. | |
706 | ||
1da177e4 | 707 | config APPLDATA_BASE |
6f9a3c33 MS |
708 | def_bool n |
709 | prompt "Linux - VM Monitor Stream, base infrastructure" | |
c185b783 | 710 | depends on PROC_FS |
1da177e4 LT |
711 | help |
712 | This provides a kernel interface for creating and updating z/VM APPLDATA | |
713 | monitor records. The monitor records are updated at certain time | |
714 | intervals, once the timer is started. | |
715 | Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, | |
716 | i.e. enables or disables monitoring on the Linux side. | |
717 | A custom interval value (in seconds) can be written to | |
718 | /proc/appldata/interval. | |
719 | ||
720 | Defaults are 60 seconds interval and timer off. | |
721 | The /proc entries can also be read from, showing the current settings. | |
722 | ||
723 | config APPLDATA_MEM | |
6f9a3c33 MS |
724 | def_tristate m |
725 | prompt "Monitor memory management statistics" | |
62fb2ba3 | 726 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
1da177e4 LT |
727 | help |
728 | This provides memory management related data to the Linux - VM Monitor | |
729 | Stream, like paging/swapping rate, memory utilisation, etc. | |
730 | Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM | |
731 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
732 | on the z/VM side. | |
733 | ||
734 | Default is disabled. | |
735 | The /proc entry can also be read from, showing the current settings. | |
736 | ||
737 | This can also be compiled as a module, which will be called | |
738 | appldata_mem.o. | |
739 | ||
740 | config APPLDATA_OS | |
6f9a3c33 MS |
741 | def_tristate m |
742 | prompt "Monitor OS statistics" | |
1da177e4 LT |
743 | depends on APPLDATA_BASE |
744 | help | |
745 | This provides OS related data to the Linux - VM Monitor Stream, like | |
746 | CPU utilisation, etc. | |
747 | Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM | |
748 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
749 | on the z/VM side. | |
750 | ||
751 | Default is disabled. | |
752 | This can also be compiled as a module, which will be called | |
753 | appldata_os.o. | |
754 | ||
755 | config APPLDATA_NET_SUM | |
6f9a3c33 MS |
756 | def_tristate m |
757 | prompt "Monitor overall network statistics" | |
70193af9 | 758 | depends on APPLDATA_BASE && NET |
1da177e4 LT |
759 | help |
760 | This provides network related data to the Linux - VM Monitor Stream, | |
761 | currently there is only a total sum of network I/O statistics, no | |
762 | per-interface data. | |
763 | Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM | |
764 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
765 | on the z/VM side. | |
766 | ||
767 | Default is disabled. | |
768 | This can also be compiled as a module, which will be called | |
769 | appldata_net_sum.o. | |
770 | ||
24bbb1fa | 771 | config S390_HYPFS_FS |
6f9a3c33 MS |
772 | def_bool y |
773 | prompt "s390 hypervisor file system support" | |
24bbb1fa | 774 | select SYS_HYPERVISOR |
24bbb1fa MH |
775 | help |
776 | This is a virtual file system intended to provide accounting | |
777 | information in an s390 hypervisor environment. | |
778 | ||
843c48fd | 779 | source "arch/s390/kvm/Kconfig" |
411ed322 | 780 | |
fa587743 | 781 | config S390_GUEST |
6f9a3c33 | 782 | def_bool y |
510cf5a6 KC |
783 | prompt "s390 support for virtio devices" |
784 | depends on 64BIT | |
79b6f7fb | 785 | select TTY |
80629b0b | 786 | select VIRTUALIZATION |
fa587743 | 787 | select VIRTIO |
faeba830 | 788 | select VIRTIO_CONSOLE |
fa587743 | 789 | help |
bdd1fc27 CH |
790 | Enabling this option adds support for virtio based paravirtual device |
791 | drivers on s390. | |
1da177e4 | 792 | |
20766c08 | 793 | Select this option if you want to run the kernel as a guest under |
bdd1fc27 | 794 | the KVM hypervisor. |
155af2f9 HJP |
795 | |
796 | endmenu |