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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 | ||
23db764d | 37 | config NO_IOMEM |
5ea81769 AV |
38 | def_bool y |
39 | ||
411f0f3e HC |
40 | config NO_DMA |
41 | def_bool y | |
42 | ||
eca577ef FT |
43 | config ARCH_DMA_ADDR_T_64BIT |
44 | def_bool 64BIT | |
45 | ||
b6b40c53 | 46 | config GENERIC_LOCKBREAK |
6f9a3c33 | 47 | def_bool y if SMP && PREEMPT |
b6b40c53 | 48 | |
402b0862 | 49 | config PGSTE |
6f9a3c33 | 50 | def_bool y if KVM |
402b0862 | 51 | |
6a11f75b AM |
52 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
53 | def_bool y | |
54 | ||
843c48fd JG |
55 | config KEXEC |
56 | def_bool y | |
57 | ||
58 | config AUDIT_ARCH | |
59 | def_bool y | |
60 | ||
347a8dc3 | 61 | config 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 |
dfd9f7ab | 71 | select HAVE_DYNAMIC_FTRACE |
88dbd203 | 72 | select HAVE_FUNCTION_GRAPH_TRACER |
952974ac | 73 | select HAVE_REGS_AND_STACK_ACCESS_API |
42d4b839 | 74 | select HAVE_OPROFILE |
3f550096 | 75 | select HAVE_KPROBES |
9edddaa2 | 76 | select HAVE_KRETPROBES |
77b455f1 | 77 | select HAVE_KVM if 64BIT |
753c4dd6 | 78 | select HAVE_ARCH_TRACEHOOK |
98a79d6a | 79 | select INIT_ALL_POSSIBLE |
e360adbe | 80 | select HAVE_IRQ_WORK |
cdd6c482 | 81 | select HAVE_PERF_EVENTS |
df013ffb | 82 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
b69ec42b | 83 | select HAVE_DEBUG_KMEMLEAK |
1844c9bc MS |
84 | select HAVE_KERNEL_GZIP |
85 | select HAVE_KERNEL_BZIP2 | |
86 | select HAVE_KERNEL_LZMA | |
cdf56649 | 87 | select HAVE_KERNEL_LZO |
d7b081ac | 88 | select HAVE_KERNEL_XZ |
34b133f8 | 89 | select HAVE_ARCH_MUTEX_CPU_RELAX |
5373db88 | 90 | select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 |
c10302ef | 91 | select HAVE_BPF_JIT if 64BIT && PACK_STACK |
85055dd8 | 92 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION |
7463449b | 93 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
ff38df37 TH |
94 | select HAVE_MEMBLOCK |
95 | select HAVE_MEMBLOCK_NODE_MAP | |
2e30db95 | 96 | select HAVE_CMPXCHG_LOCAL |
b1d6b40c | 97 | select HAVE_CMPXCHG_DOUBLE |
b952741c FW |
98 | select HAVE_VIRT_CPU_ACCOUNTING |
99 | select VIRT_CPU_ACCOUNTING | |
ff38df37 | 100 | select ARCH_DISCARD_MEMBLOCK |
3193a98d | 101 | select BUILDTIME_EXTABLE_SORT |
6beb0009 TG |
102 | select ARCH_INLINE_SPIN_TRYLOCK |
103 | select ARCH_INLINE_SPIN_TRYLOCK_BH | |
104 | select ARCH_INLINE_SPIN_LOCK | |
105 | select ARCH_INLINE_SPIN_LOCK_BH | |
106 | select ARCH_INLINE_SPIN_LOCK_IRQ | |
107 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE | |
108 | select ARCH_INLINE_SPIN_UNLOCK | |
109 | select ARCH_INLINE_SPIN_UNLOCK_BH | |
110 | select ARCH_INLINE_SPIN_UNLOCK_IRQ | |
111 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE | |
112 | select ARCH_INLINE_READ_TRYLOCK | |
113 | select ARCH_INLINE_READ_LOCK | |
114 | select ARCH_INLINE_READ_LOCK_BH | |
115 | select ARCH_INLINE_READ_LOCK_IRQ | |
116 | select ARCH_INLINE_READ_LOCK_IRQSAVE | |
117 | select ARCH_INLINE_READ_UNLOCK | |
118 | select ARCH_INLINE_READ_UNLOCK_BH | |
119 | select ARCH_INLINE_READ_UNLOCK_IRQ | |
120 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE | |
121 | select ARCH_INLINE_WRITE_TRYLOCK | |
122 | select ARCH_INLINE_WRITE_LOCK | |
123 | select ARCH_INLINE_WRITE_LOCK_BH | |
124 | select ARCH_INLINE_WRITE_LOCK_IRQ | |
125 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE | |
126 | select ARCH_INLINE_WRITE_UNLOCK | |
127 | select ARCH_INLINE_WRITE_UNLOCK_BH | |
128 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | |
129 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | |
af1839eb | 130 | select HAVE_UID16 if 32BIT |
c1d7e01d | 131 | select ARCH_WANT_IPC_PARSE_VERSION |
e80e7813 | 132 | select GENERIC_SMP_IDLE_THREAD |
a6527b92 AMG |
133 | select GENERIC_TIME_VSYSCALL |
134 | select GENERIC_CLOCKEVENTS | |
135 | select KTIME_SCALAR if 32BIT | |
c63cb468 | 136 | select HAVE_ARCH_SECCOMP_FILTER |
1da177e4 | 137 | |
fca3e357 | 138 | config SCHED_OMIT_FRAME_POINTER |
6f9a3c33 | 139 | def_bool y |
fca3e357 | 140 | |
1da177e4 LT |
141 | source "init/Kconfig" |
142 | ||
dc52ddc0 MH |
143 | source "kernel/Kconfig.freezer" |
144 | ||
843c48fd JG |
145 | menu "Processor type and features" |
146 | ||
147 | config HAVE_MARCH_Z900_FEATURES | |
148 | def_bool n | |
149 | ||
150 | config HAVE_MARCH_Z990_FEATURES | |
151 | def_bool n | |
152 | select HAVE_MARCH_Z900_FEATURES | |
153 | ||
154 | config HAVE_MARCH_Z9_109_FEATURES | |
155 | def_bool n | |
156 | select HAVE_MARCH_Z990_FEATURES | |
157 | ||
158 | config HAVE_MARCH_Z10_FEATURES | |
159 | def_bool n | |
160 | select HAVE_MARCH_Z9_109_FEATURES | |
161 | ||
162 | config HAVE_MARCH_Z196_FEATURES | |
163 | def_bool n | |
164 | select HAVE_MARCH_Z10_FEATURES | |
165 | ||
166 | choice | |
167 | prompt "Processor type" | |
168 | default MARCH_G5 | |
169 | ||
170 | config MARCH_G5 | |
171 | bool "System/390 model G5 and G6" | |
172 | depends on !64BIT | |
173 | help | |
174 | Select this to build a 31 bit kernel that works | |
175 | on all ESA/390 and z/Architecture machines. | |
1da177e4 | 176 | |
843c48fd JG |
177 | config MARCH_Z900 |
178 | bool "IBM zSeries model z800 and z900" | |
179 | select HAVE_MARCH_Z900_FEATURES if 64BIT | |
180 | help | |
181 | Select this to enable optimizations for model z800/z900 (2064 and | |
182 | 2066 series). This will enable some optimizations that are not | |
183 | available on older ESA/390 (31 Bit) only CPUs. | |
184 | ||
185 | config MARCH_Z990 | |
186 | bool "IBM zSeries model z890 and z990" | |
187 | select HAVE_MARCH_Z990_FEATURES if 64BIT | |
188 | help | |
189 | Select this to enable optimizations for model z890/z990 (2084 and | |
190 | 2086 series). The kernel will be slightly faster but will not work | |
191 | on older machines. | |
192 | ||
193 | config MARCH_Z9_109 | |
194 | bool "IBM System z9" | |
195 | select HAVE_MARCH_Z9_109_FEATURES if 64BIT | |
196 | help | |
197 | Select this to enable optimizations for IBM System z9 (2094 and | |
198 | 2096 series). The kernel will be slightly faster but will not work | |
199 | on older machines. | |
200 | ||
201 | config MARCH_Z10 | |
202 | bool "IBM System z10" | |
203 | select HAVE_MARCH_Z10_FEATURES if 64BIT | |
204 | help | |
205 | Select this to enable optimizations for IBM System z10 (2097 and | |
206 | 2098 series). The kernel will be slightly faster but will not work | |
207 | on older machines. | |
208 | ||
209 | config MARCH_Z196 | |
210 | bool "IBM zEnterprise 114 and 196" | |
211 | select HAVE_MARCH_Z196_FEATURES if 64BIT | |
212 | help | |
213 | Select this to enable optimizations for IBM zEnterprise 114 and 196 | |
214 | (2818 and 2817 series). The kernel will be slightly faster but will | |
215 | not work on older machines. | |
1da177e4 | 216 | |
843c48fd | 217 | endchoice |
1da177e4 | 218 | |
347a8dc3 | 219 | config 64BIT |
6f9a3c33 MS |
220 | def_bool y |
221 | prompt "64 bit kernel" | |
1da177e4 | 222 | help |
db81a23d | 223 | Select this option if you have an IBM z/Architecture machine |
1da177e4 LT |
224 | and want to use the 64 bit addressing mode. |
225 | ||
d9f7a745 | 226 | config 32BIT |
6f9a3c33 | 227 | def_bool y if !64BIT |
d9f7a745 | 228 | |
843c48fd JG |
229 | config COMPAT |
230 | def_bool y | |
231 | prompt "Kernel support for 31 bit emulation" | |
232 | depends on 64BIT | |
233 | select COMPAT_BINFMT_ELF if BINFMT_ELF | |
234 | select ARCH_WANT_OLD_COMPAT_IPC | |
235 | help | |
236 | Select this option if you want to enable your system kernel to | |
237 | handle system-calls from ELF binaries for 31 bit ESA. This option | |
238 | (and some other stuff like libraries and such) is needed for | |
239 | executing 31 bit applications. It is safe to say "Y". | |
240 | ||
241 | config SYSVIPC_COMPAT | |
242 | def_bool y if COMPAT && SYSVIPC | |
243 | ||
244 | config KEYS_COMPAT | |
245 | def_bool y if COMPAT && KEYS | |
246 | ||
1da177e4 | 247 | config SMP |
6f9a3c33 MS |
248 | def_bool y |
249 | prompt "Symmetric multi-processing support" | |
1da177e4 LT |
250 | ---help--- |
251 | This enables support for systems with more than one CPU. If you have | |
252 | a system with only one CPU, like most personal computers, say N. If | |
253 | you have a system with more than one CPU, say Y. | |
254 | ||
255 | If you say N here, the kernel will run on single and multiprocessor | |
256 | machines, but will use only one CPU of a multiprocessor machine. If | |
257 | you say Y here, the kernel will run on many, but not all, | |
258 | singleprocessor machines. On a singleprocessor machine, the kernel | |
259 | will run faster if you say N here. | |
260 | ||
03502faa AB |
261 | See also the SMP-HOWTO available at |
262 | <http://www.tldp.org/docs.html#howto>. | |
1da177e4 LT |
263 | |
264 | Even if you don't know what to do here, say Y. | |
265 | ||
266 | config NR_CPUS | |
267 | int "Maximum number of CPUs (2-64)" | |
268 | range 2 64 | |
269 | depends on SMP | |
057c5cb3 HC |
270 | default "32" if !64BIT |
271 | default "64" if 64BIT | |
1da177e4 LT |
272 | help |
273 | This allows you to specify the maximum number of CPUs which this | |
274 | kernel will support. The maximum supported value is 64 and the | |
275 | minimum value which makes sense is 2. | |
276 | ||
277 | This is purely to save memory - each supported CPU adds | |
278 | approximately sixteen kilobytes to the kernel image. | |
279 | ||
280 | config HOTPLUG_CPU | |
6f9a3c33 MS |
281 | def_bool y |
282 | prompt "Support for hot-pluggable CPUs" | |
1da177e4 LT |
283 | depends on SMP |
284 | select HOTPLUG | |
1da177e4 LT |
285 | help |
286 | Say Y here to be able to turn CPUs off and on. CPUs | |
287 | can be controlled through /sys/devices/system/cpu/cpu#. | |
288 | Say N if you want to disable CPU hotplug. | |
289 | ||
8d11e021 | 290 | config SCHED_MC |
83a24e32 | 291 | def_bool n |
8d11e021 | 292 | |
4cb14bc8 | 293 | config SCHED_BOOK |
6f9a3c33 MS |
294 | def_bool y |
295 | prompt "Book scheduler support" | |
83a24e32 HC |
296 | depends on SMP |
297 | select SCHED_MC | |
4cb14bc8 HC |
298 | help |
299 | Book scheduler support improves the CPU scheduler's decision making | |
300 | when dealing with machines that have several books. | |
301 | ||
843c48fd JG |
302 | source kernel/Kconfig.preempt |
303 | ||
1da177e4 | 304 | config MATHEMU |
6f9a3c33 MS |
305 | def_bool y |
306 | prompt "IEEE FPU emulation" | |
1da177e4 LT |
307 | depends on MARCH_G5 |
308 | help | |
309 | This option is required for IEEE compliant floating point arithmetic | |
db81a23d | 310 | on older ESA/390 machines. Say Y unless you know your machine doesn't |
1da177e4 LT |
311 | need this. |
312 | ||
843c48fd | 313 | source kernel/Kconfig.hz |
1da177e4 | 314 | |
843c48fd | 315 | endmenu |
1da177e4 | 316 | |
843c48fd | 317 | menu "Memory setup" |
1d057720 | 318 | |
843c48fd | 319 | config ARCH_SPARSEMEM_ENABLE |
6f9a3c33 | 320 | def_bool y |
843c48fd JG |
321 | select SPARSEMEM_VMEMMAP_ENABLE |
322 | select SPARSEMEM_VMEMMAP | |
323 | select SPARSEMEM_STATIC if !64BIT | |
e65e1fc2 | 324 | |
843c48fd JG |
325 | config ARCH_SPARSEMEM_DEFAULT |
326 | def_bool y | |
1da177e4 | 327 | |
843c48fd JG |
328 | config ARCH_SELECT_MEMORY_MODEL |
329 | def_bool y | |
1da177e4 | 330 | |
843c48fd JG |
331 | config ARCH_ENABLE_MEMORY_HOTPLUG |
332 | def_bool y if SPARSEMEM | |
0efa4703 | 333 | |
843c48fd JG |
334 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
335 | def_bool y | |
e37f50e1 | 336 | |
843c48fd JG |
337 | config FORCE_MAX_ZONEORDER |
338 | int | |
339 | default "9" | |
f861e405 | 340 | |
843c48fd | 341 | source "mm/Kconfig" |
1da177e4 LT |
342 | |
343 | config PACK_STACK | |
6f9a3c33 MS |
344 | def_bool y |
345 | prompt "Pack kernel stack" | |
1da177e4 LT |
346 | help |
347 | This option enables the compiler option -mkernel-backchain if it | |
348 | is available. If the option is available the compiler supports | |
349 | the new stack layout which dramatically reduces the minimum stack | |
350 | frame size. With an old compiler a non-leaf function needs a | |
351 | minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With | |
352 | -mkernel-backchain the minimum size drops to 16 byte on 31 bit | |
353 | and 24 byte on 64 bit. | |
354 | ||
355 | Say Y if you are unsure. | |
356 | ||
357 | config SMALL_STACK | |
6f9a3c33 MS |
358 | def_bool n |
359 | prompt "Use 8kb for kernel stack instead of 16kb" | |
7f5a8ba6 | 360 | depends on PACK_STACK && 64BIT && !LOCKDEP |
1da177e4 LT |
361 | help |
362 | If you say Y here and the compiler supports the -mkernel-backchain | |
7f5a8ba6 HC |
363 | option the kernel will use a smaller kernel stack size. The reduced |
364 | size is 8kb instead of 16kb. This allows to run more threads on a | |
365 | system and reduces the pressure on the memory management for higher | |
366 | order page allocations. | |
1da177e4 LT |
367 | |
368 | Say N if you are unsure. | |
369 | ||
1da177e4 | 370 | config CHECK_STACK |
6f9a3c33 MS |
371 | def_bool y |
372 | prompt "Detect kernel stack overflow" | |
1da177e4 LT |
373 | help |
374 | This option enables the compiler option -mstack-guard and | |
375 | -mstack-size if they are available. If the compiler supports them | |
376 | it will emit additional code to each function prolog to trigger | |
377 | an illegal operation if the kernel stack is about to overflow. | |
378 | ||
379 | Say N if you are unsure. | |
380 | ||
381 | config STACK_GUARD | |
382 | int "Size of the guard area (128-1024)" | |
383 | range 128 1024 | |
384 | depends on CHECK_STACK | |
385 | default "256" | |
386 | help | |
387 | This allows you to specify the size of the guard area at the lower | |
388 | end of the kernel stack. If the kernel stack points into the guard | |
389 | area on function entry an illegal operation is triggered. The size | |
390 | needs to be a power of 2. Please keep in mind that the size of an | |
391 | interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. | |
392 | The minimum size for the stack guard should be 256 for 31 bit and | |
393 | 512 for 64 bit. | |
394 | ||
2c190da4 | 395 | config WARN_DYNAMIC_STACK |
6f9a3c33 | 396 | def_bool n |
2c190da4 | 397 | prompt "Emit compiler warnings for function with dynamic stack usage" |
1da177e4 | 398 | help |
2c190da4 JG |
399 | This option enables the compiler option -mwarn-dynamicstack. If the |
400 | compiler supports this options generates warnings for functions | |
401 | that dynamically allocate stack space using alloca. | |
1da177e4 LT |
402 | |
403 | Say N if you are unsure. | |
404 | ||
843c48fd | 405 | endmenu |
3f22ab27 | 406 | |
843c48fd | 407 | menu "I/O subsystem" |
1da177e4 | 408 | |
1da177e4 | 409 | config QDIO |
6f9a3c33 MS |
410 | def_tristate y |
411 | prompt "QDIO support" | |
1da177e4 | 412 | ---help--- |
8129ee16 | 413 | This driver provides the Queued Direct I/O base support for |
efca13bc | 414 | IBM System z. |
1da177e4 LT |
415 | |
416 | To compile this driver as a module, choose M here: the | |
417 | module will be called qdio. | |
418 | ||
419 | If unsure, say Y. | |
420 | ||
9d92a7e1 | 421 | config CHSC_SCH |
d9c11b1e | 422 | def_tristate m |
6f9a3c33 | 423 | prompt "Support for CHSC subchannels" |
9d92a7e1 CH |
424 | help |
425 | This driver allows usage of CHSC subchannels. A CHSC subchannel | |
426 | is usually present on LPAR only. | |
427 | The driver creates a device /dev/chsc, which may be used to | |
428 | obtain I/O configuration information about the machine and | |
429 | to issue asynchronous chsc commands (DANGEROUS). | |
430 | You will usually only want to use this interface on a special | |
431 | LPAR designated for system management. | |
432 | ||
433 | To compile this driver as a module, choose M here: the | |
434 | module will be called chsc_sch. | |
435 | ||
436 | If unsure, say N. | |
437 | ||
1d1c8f78 SO |
438 | config SCM_BUS |
439 | def_bool y | |
440 | depends on 64BIT | |
441 | prompt "SCM bus driver" | |
442 | help | |
443 | Bus driver for Storage Class Memory. | |
444 | ||
eadb86ab SO |
445 | config EADM_SCH |
446 | def_tristate m | |
447 | prompt "Support for EADM subchannels" | |
448 | depends on SCM_BUS | |
449 | help | |
450 | This driver allows usage of EADM subchannels. EADM subchannels act | |
451 | as a communication vehicle for SCM increments. | |
452 | ||
453 | To compile this driver as a module, choose M here: the | |
454 | module will be called eadm_sch. | |
455 | ||
843c48fd JG |
456 | endmenu |
457 | ||
458 | menu "Dump support" | |
459 | ||
460 | config CRASH_DUMP | |
461 | bool "kernel crash dumps" | |
462 | depends on 64BIT && SMP | |
463 | select KEXEC | |
464 | help | |
465 | Generate crash dump after being started by kexec. | |
466 | Crash dump kernels are loaded in the main kernel with kexec-tools | |
467 | into a specially reserved region and then later executed after | |
468 | a crash by kdump/kexec. | |
469 | For more details see Documentation/kdump/kdump.txt | |
470 | ||
471 | config ZFCPDUMP | |
472 | def_bool n | |
473 | prompt "zfcpdump support" | |
474 | select SMP | |
475 | help | |
476 | Select this option if you want to build an zfcpdump enabled kernel. | |
477 | Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. | |
478 | ||
479 | endmenu | |
480 | ||
481 | menu "Executable file formats / Emulations" | |
1da177e4 | 482 | |
1da177e4 LT |
483 | source "fs/Kconfig.binfmt" |
484 | ||
843c48fd JG |
485 | config SECCOMP |
486 | def_bool y | |
487 | prompt "Enable seccomp to safely compute untrusted bytecode" | |
488 | depends on PROC_FS | |
489 | help | |
490 | This kernel feature is useful for number crunching applications | |
491 | that may need to compute untrusted bytecode during their | |
492 | execution. By using pipes or other transports made available to | |
493 | the process as file descriptors supporting the read/write | |
494 | syscalls, it's possible to isolate those applications in | |
495 | their own address space using seccomp. Once seccomp is | |
496 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
497 | and the task is only allowed to execute a few safe syscalls | |
498 | defined by each seccomp mode. | |
499 | ||
500 | If unsure, say Y. | |
501 | ||
502 | endmenu | |
503 | ||
504 | menu "Power Management" | |
505 | ||
506 | config ARCH_HIBERNATION_POSSIBLE | |
507 | def_bool y if 64BIT | |
508 | ||
509 | source "kernel/power/Kconfig" | |
510 | ||
511 | endmenu | |
512 | ||
513 | source "net/Kconfig" | |
514 | ||
515 | config PCMCIA | |
516 | def_bool n | |
517 | ||
518 | config CCW | |
519 | def_bool y | |
520 | ||
521 | source "drivers/Kconfig" | |
522 | ||
523 | source "fs/Kconfig" | |
524 | ||
525 | source "arch/s390/Kconfig.debug" | |
526 | ||
527 | source "security/Kconfig" | |
528 | ||
529 | source "crypto/Kconfig" | |
530 | ||
531 | source "lib/Kconfig" | |
532 | ||
533 | menu "Virtualization" | |
684de39b | 534 | |
1da177e4 | 535 | config PFAULT |
6f9a3c33 MS |
536 | def_bool y |
537 | prompt "Pseudo page fault support" | |
1da177e4 LT |
538 | help |
539 | Select this option, if you want to use PFAULT pseudo page fault | |
540 | handling under VM. If running native or in LPAR, this option | |
541 | has no effect. If your VM does not support PFAULT, PAGEEX | |
542 | pseudo page fault handling will be used. | |
543 | Note that VM 4.2 supports PFAULT but has a bug in its | |
544 | implementation that causes some problems. | |
545 | Everybody who wants to run Linux under VM != VM4.2 should select | |
546 | this option. | |
547 | ||
548 | config SHARED_KERNEL | |
0eccc783 HC |
549 | bool "VM shared kernel support" |
550 | depends on !JUMP_LABEL | |
1da177e4 LT |
551 | help |
552 | Select this option, if you want to share the text segment of the | |
553 | Linux kernel between different VM guests. This reduces memory | |
554 | usage with lots of guests but greatly increases kernel size. | |
9c9c1761 HC |
555 | Also if a kernel was IPL'ed from a shared segment the kexec system |
556 | call will not work. | |
1da177e4 LT |
557 | You should only select this option if you know what you are |
558 | doing and want to exploit this feature. | |
559 | ||
560 | config CMM | |
6f9a3c33 MS |
561 | def_tristate n |
562 | prompt "Cooperative memory management" | |
1da177e4 LT |
563 | help |
564 | Select this option, if you want to enable the kernel interface | |
565 | to reduce the memory size of the system. This is accomplished | |
566 | by allocating pages of memory and put them "on hold". This only | |
567 | makes sense for a system running under VM where the unused pages | |
568 | will be reused by VM for other guest systems. The interface | |
569 | allows an external monitor to balance memory of many systems. | |
570 | Everybody who wants to run Linux under VM should select this | |
571 | option. | |
572 | ||
1da177e4 | 573 | config CMM_IUCV |
6f9a3c33 MS |
574 | def_bool y |
575 | prompt "IUCV special message interface to cooperative memory management" | |
1da177e4 LT |
576 | depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) |
577 | help | |
578 | Select this option to enable the special message interface to | |
579 | the cooperative memory management. | |
580 | ||
1da177e4 | 581 | config APPLDATA_BASE |
6f9a3c33 MS |
582 | def_bool n |
583 | prompt "Linux - VM Monitor Stream, base infrastructure" | |
c185b783 | 584 | depends on PROC_FS |
1da177e4 LT |
585 | help |
586 | This provides a kernel interface for creating and updating z/VM APPLDATA | |
587 | monitor records. The monitor records are updated at certain time | |
588 | intervals, once the timer is started. | |
589 | Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, | |
590 | i.e. enables or disables monitoring on the Linux side. | |
591 | A custom interval value (in seconds) can be written to | |
592 | /proc/appldata/interval. | |
593 | ||
594 | Defaults are 60 seconds interval and timer off. | |
595 | The /proc entries can also be read from, showing the current settings. | |
596 | ||
597 | config APPLDATA_MEM | |
6f9a3c33 MS |
598 | def_tristate m |
599 | prompt "Monitor memory management statistics" | |
62fb2ba3 | 600 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
1da177e4 LT |
601 | help |
602 | This provides memory management related data to the Linux - VM Monitor | |
603 | Stream, like paging/swapping rate, memory utilisation, etc. | |
604 | Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM | |
605 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
606 | on the z/VM side. | |
607 | ||
608 | Default is disabled. | |
609 | The /proc entry can also be read from, showing the current settings. | |
610 | ||
611 | This can also be compiled as a module, which will be called | |
612 | appldata_mem.o. | |
613 | ||
614 | config APPLDATA_OS | |
6f9a3c33 MS |
615 | def_tristate m |
616 | prompt "Monitor OS statistics" | |
1da177e4 LT |
617 | depends on APPLDATA_BASE |
618 | help | |
619 | This provides OS related data to the Linux - VM Monitor Stream, like | |
620 | CPU utilisation, etc. | |
621 | Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM | |
622 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
623 | on the z/VM side. | |
624 | ||
625 | Default is disabled. | |
626 | This can also be compiled as a module, which will be called | |
627 | appldata_os.o. | |
628 | ||
629 | config APPLDATA_NET_SUM | |
6f9a3c33 MS |
630 | def_tristate m |
631 | prompt "Monitor overall network statistics" | |
70193af9 | 632 | depends on APPLDATA_BASE && NET |
1da177e4 LT |
633 | help |
634 | This provides network related data to the Linux - VM Monitor Stream, | |
635 | currently there is only a total sum of network I/O statistics, no | |
636 | per-interface data. | |
637 | Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM | |
638 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
639 | on the z/VM side. | |
640 | ||
641 | Default is disabled. | |
642 | This can also be compiled as a module, which will be called | |
643 | appldata_net_sum.o. | |
644 | ||
24bbb1fa | 645 | config S390_HYPFS_FS |
6f9a3c33 MS |
646 | def_bool y |
647 | prompt "s390 hypervisor file system support" | |
24bbb1fa | 648 | select SYS_HYPERVISOR |
24bbb1fa MH |
649 | help |
650 | This is a virtual file system intended to provide accounting | |
651 | information in an s390 hypervisor environment. | |
652 | ||
843c48fd | 653 | source "arch/s390/kvm/Kconfig" |
411ed322 | 654 | |
fa587743 | 655 | config S390_GUEST |
6f9a3c33 | 656 | def_bool y |
bdd1fc27 | 657 | prompt "s390 support for virtio devices (EXPERIMENTAL)" |
fa587743 | 658 | depends on 64BIT && EXPERIMENTAL |
80629b0b | 659 | select VIRTUALIZATION |
fa587743 | 660 | select VIRTIO |
faeba830 | 661 | select VIRTIO_CONSOLE |
fa587743 | 662 | help |
bdd1fc27 CH |
663 | Enabling this option adds support for virtio based paravirtual device |
664 | drivers on s390. | |
1da177e4 | 665 | |
20766c08 | 666 | Select this option if you want to run the kernel as a guest under |
bdd1fc27 | 667 | the KVM hypervisor. |
155af2f9 HJP |
668 | |
669 | endmenu |