blob: 1c3c43d9d1b54f5d828c45f272e7dc0be882024f [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config MMU
Martin Schwidefsky61d48c22007-05-10 15:46:00 +02002 def_bool y
Linus Torvalds1da177e2005-04-16 15:20:36 -07003
Christoph Lameter66701b12007-02-10 01:43:09 -08004config ZONE_DMA
Heiko Carstens69dbb2f2011-05-26 09:48:31 +02005 def_bool y
Christoph Lameter66701b12007-02-10 01:43:09 -08006
Heiko Carstens2fd92272016-04-14 09:00:27 +02007config CPU_BIG_ENDIAN
8 def_bool y
9
Ingo Molnar2b105ff2006-07-03 00:25:02 -070010config LOCKDEP_SUPPORT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020011 def_bool y
Ingo Molnar2b105ff2006-07-03 00:25:02 -070012
Heiko Carstens5bdc9b42006-07-03 00:24:41 -070013config STACKTRACE_SUPPORT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020014 def_bool y
Heiko Carstens5bdc9b42006-07-03 00:24:41 -070015
Linus Torvalds1da177e2005-04-16 15:20:36 -070016config RWSEM_GENERIC_SPINLOCK
17 bool
18
19config RWSEM_XCHGADD_ALGORITHM
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020020 def_bool y
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
David Howellsf0d1b0b2006-12-08 02:37:49 -080022config ARCH_HAS_ILOG2_U32
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010023 def_bool n
David Howellsf0d1b0b2006-12-08 02:37:49 -080024
25config ARCH_HAS_ILOG2_U64
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010026 def_bool n
David Howellsf0d1b0b2006-12-08 02:37:49 -080027
Akinobu Mita7e33db42006-03-26 01:39:34 -080028config GENERIC_HWEIGHT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020029 def_bool y
Akinobu Mita7e33db42006-03-26 01:39:34 -080030
Heiko Carstensc0007f12007-04-27 16:01:42 +020031config GENERIC_BUG
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010032 def_bool y if BUG
Heiko Carstensc0007f12007-04-27 16:01:42 +020033
Heiko Carstens52499f42010-02-26 22:37:44 +010034config GENERIC_BUG_RELATIVE_POINTERS
35 def_bool y
36
FUJITA Tomonorieca577e2010-10-25 16:10:50 +020037config ARCH_DMA_ADDR_T_64BIT
Heiko Carstens5a798592015-02-12 13:08:27 +010038 def_bool y
FUJITA Tomonorieca577e2010-10-25 16:10:50 +020039
Martin Schwidefskyb6b40c52008-02-05 16:50:42 +010040config GENERIC_LOCKBREAK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010041 def_bool y if SMP && PREEMPT
Martin Schwidefskyb6b40c52008-02-05 16:50:42 +010042
Carsten Otte402b0862008-03-25 18:47:10 +010043config PGSTE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010044 def_bool y if KVM
Carsten Otte402b0862008-03-25 18:47:10 +010045
Akinobu Mita6a11f752009-03-31 15:23:17 -070046config ARCH_SUPPORTS_DEBUG_PAGEALLOC
47 def_bool y
48
Jan Glauber843c48f2012-08-27 10:55:18 +020049config KEXEC
50 def_bool y
Dave Young2965faa2015-09-09 15:38:55 -070051 select KEXEC_CORE
Jan Glauber843c48f2012-08-27 10:55:18 +020052
53config AUDIT_ARCH
54 def_bool y
55
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -070056config NO_IOPORT_MAP
Jan Glauberc8717a32012-11-29 14:38:46 +010057 def_bool y
58
59config PCI_QUIRKS
60 def_bool n
61
Jan Willeke2a0a5b22014-09-22 16:39:06 +020062config ARCH_SUPPORTS_UPROBES
Heiko Carstens5a798592015-02-12 13:08:27 +010063 def_bool y
Jan Willeke2a0a5b22014-09-22 16:39:06 +020064
Heiko Carstens91d37212016-03-17 12:47:12 +010065config DEBUG_RODATA
66 def_bool y
67
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080068config S390
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020069 def_bool y
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010070 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Heiko Carstens93bead42013-09-06 10:03:30 +020071 select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
Dan Williams21266be2015-11-19 18:19:29 -080072 select ARCH_HAS_DEVMEM_IS_ALLOWED
Kees Cook2b68f6c2015-04-14 15:48:00 -070073 select ARCH_HAS_ELF_RANDOMIZE
Riku Voipio957e3fa2014-12-12 16:57:44 -080074 select ARCH_HAS_GCOV_PROFILE_ALL
Heiko Carstens47523c92014-12-22 10:07:04 +010075 select ARCH_HAS_SG_CHAIN
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010076 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Thomas Gleixner6beb0002009-11-09 15:21:34 +000077 select ARCH_INLINE_READ_LOCK
78 select ARCH_INLINE_READ_LOCK_BH
79 select ARCH_INLINE_READ_LOCK_IRQ
80 select ARCH_INLINE_READ_LOCK_IRQSAVE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010081 select ARCH_INLINE_READ_TRYLOCK
Thomas Gleixner6beb0002009-11-09 15:21:34 +000082 select ARCH_INLINE_READ_UNLOCK
83 select ARCH_INLINE_READ_UNLOCK_BH
84 select ARCH_INLINE_READ_UNLOCK_IRQ
85 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010086 select ARCH_INLINE_SPIN_LOCK
87 select ARCH_INLINE_SPIN_LOCK_BH
88 select ARCH_INLINE_SPIN_LOCK_IRQ
89 select ARCH_INLINE_SPIN_LOCK_IRQSAVE
90 select ARCH_INLINE_SPIN_TRYLOCK
91 select ARCH_INLINE_SPIN_TRYLOCK_BH
92 select ARCH_INLINE_SPIN_UNLOCK
93 select ARCH_INLINE_SPIN_UNLOCK_BH
94 select ARCH_INLINE_SPIN_UNLOCK_IRQ
95 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
Thomas Gleixner6beb0002009-11-09 15:21:34 +000096 select ARCH_INLINE_WRITE_LOCK
97 select ARCH_INLINE_WRITE_LOCK_BH
98 select ARCH_INLINE_WRITE_LOCK_IRQ
99 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100100 select ARCH_INLINE_WRITE_TRYLOCK
Thomas Gleixner6beb0002009-11-09 15:21:34 +0000101 select ARCH_INLINE_WRITE_UNLOCK
102 select ARCH_INLINE_WRITE_UNLOCK_BH
103 select ARCH_INLINE_WRITE_UNLOCK_IRQ
104 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100105 select ARCH_SAVE_PAGE_KEYS if HIBERNATION
Christian Borntraeger36e7fda2014-08-05 09:57:51 +0200106 select ARCH_SUPPORTS_ATOMIC_RMW
Philipp Hachtmanna763bc82015-05-08 17:40:44 +0200107 select ARCH_SUPPORTS_NUMA_BALANCING
Christian Borntraeger295d8fa2015-10-29 01:16:04 +0100108 select ARCH_USE_BUILTIN_BSWAP
Heiko Carstensefc1d232013-09-05 13:26:17 +0200109 select ARCH_USE_CMPXCHG_LOCKREF
Martin Schwidefsky3f6813b2016-04-01 15:42:15 +0200110 select ARCH_WANTS_DYNAMIC_TASK_STRUCT
Philipp Hachtmanna763bc82015-05-08 17:40:44 +0200111 select ARCH_WANTS_PROT_NUMA_PROT_NONE
Will Deaconc1d7e012012-07-30 14:42:46 -0700112 select ARCH_WANT_IPC_PARSE_VERSION
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100113 select BUILDTIME_EXTABLE_SORT
114 select CLONE_BACKWARDS2
Heiko Carstens5d6a0162014-08-15 13:16:09 +0200115 select DYNAMIC_FTRACE if FUNCTION_TRACER
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100116 select GENERIC_CLOCKEVENTS
Hendrik Brueckner8f00b3e2015-02-19 12:22:02 +0100117 select GENERIC_CPU_AUTOPROBE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100118 select GENERIC_CPU_DEVICES if !SMP
Heiko Carstens746479c2013-09-18 11:45:36 +0200119 select GENERIC_FIND_FIRST_BIT
Thomas Gleixnere80e7812012-04-20 13:05:52 +0000120 select GENERIC_SMP_IDLE_THREAD
Martin Schwidefsky79c74ec2013-11-22 10:04:53 +0100121 select GENERIC_TIME_VSYSCALL
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100122 select HAVE_ALIGNED_STRUCT_PAGE if SLUB
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900123 select HAVE_ARCH_AUDITSYSCALL
Philipp Hachtmanna763bc82015-05-08 17:40:44 +0200124 select HAVE_ARCH_EARLY_PFN_TO_NID
Heiko Carstens5a798592015-02-12 13:08:27 +0100125 select HAVE_ARCH_JUMP_LABEL
Heiko Carstensc63cb462012-07-31 15:37:13 +0200126 select HAVE_ARCH_SECCOMP_FILTER
Martin Schwidefsky5614dd92015-04-22 14:47:42 +0200127 select HAVE_ARCH_SOFT_DIRTY
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100128 select HAVE_ARCH_TRACEHOOK
Heiko Carstens5a798592015-02-12 13:08:27 +0100129 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
Daniel Borkmann60777762016-05-13 19:08:28 +0200130 select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100131 select HAVE_CMPXCHG_DOUBLE
132 select HAVE_CMPXCHG_LOCAL
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100133 select HAVE_DEBUG_KMEMLEAK
Christian Borntraegere82becfc2016-02-02 21:46:34 -0800134 select HAVE_DMA_API_DEBUG
Heiko Carstens5a798592015-02-12 13:08:27 +0100135 select HAVE_DYNAMIC_FTRACE
136 select HAVE_DYNAMIC_FTRACE_WITH_REGS
Jiri Slaby5f56a5d2016-05-20 17:00:16 -0700137 select HAVE_EXIT_THREAD
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100138 select HAVE_FTRACE_MCOUNT_RECORD
Heiko Carstens5a798592015-02-12 13:08:27 +0100139 select HAVE_FUNCTION_GRAPH_TRACER
140 select HAVE_FUNCTION_TRACER
Heiko Carstens03b8c7b2014-03-02 13:09:47 +0100141 select HAVE_FUTEX_CMPXCHG if FUTEX
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100142 select HAVE_KERNEL_BZIP2
143 select HAVE_KERNEL_GZIP
Heiko Carstens8e2872c2013-07-18 15:18:24 +0200144 select HAVE_KERNEL_LZ4
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100145 select HAVE_KERNEL_LZMA
146 select HAVE_KERNEL_LZO
147 select HAVE_KERNEL_XZ
148 select HAVE_KPROBES
149 select HAVE_KRETPROBES
Heiko Carstens5a798592015-02-12 13:08:27 +0100150 select HAVE_KVM
Jiri Slaby21042d42015-03-26 10:10:17 +0100151 select HAVE_LIVEPATCH
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100152 select HAVE_MEMBLOCK
153 select HAVE_MEMBLOCK_NODE_MAP
Philipp Hachtmann50be6342014-01-29 18:16:01 +0100154 select HAVE_MEMBLOCK_PHYS_MAP
David Howells786d35d2012-09-28 14:31:03 +0930155 select HAVE_MOD_ARCH_SPECIFIC
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100156 select HAVE_OPROFILE
157 select HAVE_PERF_EVENTS
158 select HAVE_REGS_AND_STACK_ACCESS_API
159 select HAVE_SYSCALL_TRACEPOINTS
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100160 select HAVE_VIRT_CPU_ACCOUNTING
David Howells786d35d2012-09-28 14:31:03 +0930161 select MODULES_USE_ELF_RELA
Philipp Hachtmann50be6342014-01-29 18:16:01 +0100162 select NO_BOOTMEM
Al Viro7eddd992012-12-25 19:26:12 -0500163 select OLD_SIGACTION
Heiko Carstens93bead42013-09-06 10:03:30 +0200164 select OLD_SIGSUSPEND3
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100165 select SYSCTL_EXCEPTION_TRACE
Josh Triplett05634162014-02-26 18:13:06 -0800166 select TTY
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100167 select VIRT_CPU_ACCOUNTING
Heiko Carstens93bead42013-09-06 10:03:30 +0200168 select VIRT_TO_BUS
Petr Mladek42a0bb32016-05-20 17:00:33 -0700169 select HAVE_NMI
Philipp Hachtmann3a368f72014-03-06 18:25:13 +0100170
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200172config SCHED_OMIT_FRAME_POINTER
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100173 def_bool y
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200174
Kirill A. Shutemovc81956c2015-04-14 15:46:00 -0700175config PGTABLE_LEVELS
176 int
Heiko Carstensc095a942015-12-28 12:53:51 +0100177 default 4
Kirill A. Shutemovc81956c2015-04-14 15:46:00 -0700178
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179source "init/Kconfig"
180
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700181source "kernel/Kconfig.freezer"
182
Jiri Slaby21042d42015-03-26 10:10:17 +0100183source "kernel/livepatch/Kconfig"
184
Jan Glauber843c48f2012-08-27 10:55:18 +0200185menu "Processor type and features"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186
Jan Glauber843c48f2012-08-27 10:55:18 +0200187config HAVE_MARCH_Z900_FEATURES
188 def_bool n
189
190config HAVE_MARCH_Z990_FEATURES
191 def_bool n
192 select HAVE_MARCH_Z900_FEATURES
193
194config HAVE_MARCH_Z9_109_FEATURES
195 def_bool n
196 select HAVE_MARCH_Z990_FEATURES
197
198config HAVE_MARCH_Z10_FEATURES
199 def_bool n
200 select HAVE_MARCH_Z9_109_FEATURES
201
202config HAVE_MARCH_Z196_FEATURES
203 def_bool n
204 select HAVE_MARCH_Z10_FEATURES
205
Heiko Carstens991c15052012-11-13 10:26:37 +0200206config HAVE_MARCH_ZEC12_FEATURES
207 def_bool n
208 select HAVE_MARCH_Z196_FEATURES
209
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100210config HAVE_MARCH_Z13_FEATURES
211 def_bool n
212 select HAVE_MARCH_ZEC12_FEATURES
213
Jan Glauber843c48f2012-08-27 10:55:18 +0200214choice
215 prompt "Processor type"
Martin Schwidefsky7072276e2016-04-18 17:10:16 +0200216 default MARCH_Z196
Jan Glauber843c48f2012-08-27 10:55:18 +0200217
218config MARCH_Z900
219 bool "IBM zSeries model z800 and z900"
Heiko Carstens5a798592015-02-12 13:08:27 +0100220 select HAVE_MARCH_Z900_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200221 help
222 Select this to enable optimizations for model z800/z900 (2064 and
223 2066 series). This will enable some optimizations that are not
224 available on older ESA/390 (31 Bit) only CPUs.
225
226config MARCH_Z990
227 bool "IBM zSeries model z890 and z990"
Heiko Carstens5a798592015-02-12 13:08:27 +0100228 select HAVE_MARCH_Z990_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200229 help
230 Select this to enable optimizations for model z890/z990 (2084 and
231 2086 series). The kernel will be slightly faster but will not work
232 on older machines.
233
234config MARCH_Z9_109
235 bool "IBM System z9"
Heiko Carstens5a798592015-02-12 13:08:27 +0100236 select HAVE_MARCH_Z9_109_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200237 help
238 Select this to enable optimizations for IBM System z9 (2094 and
239 2096 series). The kernel will be slightly faster but will not work
240 on older machines.
241
242config MARCH_Z10
243 bool "IBM System z10"
Heiko Carstens5a798592015-02-12 13:08:27 +0100244 select HAVE_MARCH_Z10_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200245 help
246 Select this to enable optimizations for IBM System z10 (2097 and
247 2098 series). The kernel will be slightly faster but will not work
248 on older machines.
249
250config MARCH_Z196
251 bool "IBM zEnterprise 114 and 196"
Heiko Carstens5a798592015-02-12 13:08:27 +0100252 select HAVE_MARCH_Z196_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200253 help
254 Select this to enable optimizations for IBM zEnterprise 114 and 196
255 (2818 and 2817 series). The kernel will be slightly faster but will
256 not work on older machines.
257
Heiko Carstens991c15052012-11-13 10:26:37 +0200258config MARCH_ZEC12
Heiko Carstens59471222013-07-24 10:35:33 +0200259 bool "IBM zBC12 and zEC12"
Heiko Carstens5a798592015-02-12 13:08:27 +0100260 select HAVE_MARCH_ZEC12_FEATURES
Heiko Carstens991c15052012-11-13 10:26:37 +0200261 help
Heiko Carstens59471222013-07-24 10:35:33 +0200262 Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
263 2827 series). The kernel will be slightly faster but will not work on
264 older machines.
Heiko Carstens991c15052012-11-13 10:26:37 +0200265
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100266config MARCH_Z13
Heiko Carstensbb3aa612016-02-19 10:46:08 +0100267 bool "IBM z13s and z13"
Heiko Carstens5a798592015-02-12 13:08:27 +0100268 select HAVE_MARCH_Z13_FEATURES
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100269 help
Heiko Carstensbb3aa612016-02-19 10:46:08 +0100270 Select this to enable optimizations for IBM z13s and z13 (2965 and
271 2964 series). The kernel will be slightly faster but will not work on
272 older machines.
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100273
Jan Glauber843c48f2012-08-27 10:55:18 +0200274endchoice
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
Heiko Carstens1db9e052013-10-30 12:12:50 +0100276config MARCH_Z900_TUNE
277 def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
278
279config MARCH_Z990_TUNE
280 def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT
281
282config MARCH_Z9_109_TUNE
283 def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT
284
285config MARCH_Z10_TUNE
286 def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
287
288config MARCH_Z196_TUNE
289 def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
290
291config MARCH_ZEC12_TUNE
292 def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
293
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100294config MARCH_Z13_TUNE
295 def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
296
Heiko Carstens1db9e052013-10-30 12:12:50 +0100297choice
298 prompt "Tune code generation"
299 default TUNE_DEFAULT
300 help
301 Cause the compiler to tune (-mtune) the generated code for a machine.
302 This will make the code run faster on the selected machine but
303 somewhat slower on other machines.
304 This option only changes how the compiler emits instructions, not the
305 selection of instructions itself, so the resulting kernel will run on
306 all other machines.
307
308config TUNE_DEFAULT
309 bool "Default"
310 help
311 Tune the generated code for the target processor for which the kernel
312 will be compiled.
313
Heiko Carstens1db9e052013-10-30 12:12:50 +0100314config TUNE_Z900
315 bool "IBM zSeries model z800 and z900"
316
317config TUNE_Z990
318 bool "IBM zSeries model z890 and z990"
319
320config TUNE_Z9_109
321 bool "IBM System z9"
322
323config TUNE_Z10
324 bool "IBM System z10"
325
326config TUNE_Z196
327 bool "IBM zEnterprise 114 and 196"
328
329config TUNE_ZEC12
330 bool "IBM zBC12 and zEC12"
331
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100332config TUNE_Z13
333 bool "IBM z13"
334
Heiko Carstens1db9e052013-10-30 12:12:50 +0100335endchoice
336
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800337config 64BIT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100338 def_bool y
Martin Schwidefskyd9f7a742006-09-28 16:55:39 +0200339
Jan Glauber843c48f2012-08-27 10:55:18 +0200340config COMPAT
341 def_bool y
342 prompt "Kernel support for 31 bit emulation"
Jan Glauber843c48f2012-08-27 10:55:18 +0200343 select COMPAT_BINFMT_ELF if BINFMT_ELF
344 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro7eddd992012-12-25 19:26:12 -0500345 select COMPAT_OLD_SIGACTION
Iulia Manda28138932015-04-15 16:16:41 -0700346 depends on MULTIUSER
Jan Glauber843c48f2012-08-27 10:55:18 +0200347 help
348 Select this option if you want to enable your system kernel to
349 handle system-calls from ELF binaries for 31 bit ESA. This option
350 (and some other stuff like libraries and such) is needed for
351 executing 31 bit applications. It is safe to say "Y".
352
353config SYSVIPC_COMPAT
354 def_bool y if COMPAT && SYSVIPC
355
356config KEYS_COMPAT
357 def_bool y if COMPAT && KEYS
358
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359config SMP
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100360 def_bool y
361 prompt "Symmetric multi-processing support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 ---help---
363 This enables support for systems with more than one CPU. If you have
364 a system with only one CPU, like most personal computers, say N. If
365 you have a system with more than one CPU, say Y.
366
Robert Graffham4a474152014-01-23 15:55:29 -0800367 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 machines, but will use only one CPU of a multiprocessor machine. If
369 you say Y here, the kernel will run on many, but not all,
Robert Graffham4a474152014-01-23 15:55:29 -0800370 uniprocessor machines. On a uniprocessor machine, the kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 will run faster if you say N here.
372
Adrian Bunk03502fa2008-02-03 15:50:21 +0200373 See also the SMP-HOWTO available at
374 <http://www.tldp.org/docs.html#howto>.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
376 Even if you don't know what to do here, say Y.
377
378config NR_CPUS
Heiko Carstens5c75a0d2015-01-28 16:52:01 +0100379 int "Maximum number of CPUs (2-512)"
380 range 2 512
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 depends on SMP
Heiko Carstens5a798592015-02-12 13:08:27 +0100382 default "64"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 help
384 This allows you to specify the maximum number of CPUs which this
Heiko Carstens5c75a0d2015-01-28 16:52:01 +0100385 kernel will support. The maximum supported value is 512 and the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 minimum value which makes sense is 2.
387
388 This is purely to save memory - each supported CPU adds
389 approximately sixteen kilobytes to the kernel image.
390
391config HOTPLUG_CPU
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100392 def_bool y
393 prompt "Support for hot-pluggable CPUs"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 depends on SMP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 help
396 Say Y here to be able to turn CPUs off and on. CPUs
397 can be controlled through /sys/devices/system/cpu/cpu#.
398 Say N if you want to disable CPU hotplug.
399
Philipp Hachtmann3a368f72014-03-06 18:25:13 +0100400# Some NUMA nodes have memory ranges that span
401# other nodes. Even though a pfn is valid and
402# between a node's start and end pfns, it may not
403# reside on that node. See memmap_init_zone()
404# for details. <- They meant memory holes!
405config NODES_SPAN_OTHER_NODES
406 def_bool NUMA
407
408config NUMA
409 bool "NUMA support"
Heiko Carstensc095a942015-12-28 12:53:51 +0100410 depends on SMP && SCHED_TOPOLOGY
Philipp Hachtmann3a368f72014-03-06 18:25:13 +0100411 default n
412 help
413 Enable NUMA support
414
415 This option adds NUMA support to the kernel.
416
417 An operation mode can be selected by appending
418 numa=<method> to the kernel command line.
419
420 The default behaviour is identical to appending numa=plain to
421 the command line. This will create just one node with all
422 available memory and all CPUs in it.
423
424config NODES_SHIFT
425 int "Maximum NUMA nodes (as a power of 2)"
426 range 1 10
427 depends on NUMA
428 default "4"
429 help
430 Specify the maximum number of NUMA nodes available on the target
431 system. Increases memory reserved to accommodate various tables.
432
Michael Holzheuc29a7ba2014-03-06 18:47:21 +0100433menu "Select NUMA modes"
434 depends on NUMA
435
436config NUMA_EMU
437 bool "NUMA emulation"
438 default y
439 help
440 Numa emulation mode will split the available system memory into
441 equal chunks which then are distributed over the configured number
442 of nodes in a round-robin manner.
443
444 The number of fake nodes is limited by the number of available memory
445 chunks (i.e. memory size / fake size) and the number of supported
446 nodes in the kernel.
447
448 The CPUs are assigned to the nodes in a way that partially respects
449 the original machine topology (if supported by the machine).
450 Fair distribution of the CPUs is not guaranteed.
451
452config EMU_SIZE
453 hex "NUMA emulation memory chunk size"
454 default 0x10000000
455 range 0x400000 0x100000000
456 depends on NUMA_EMU
457 help
458 Select the default size by which the memory is chopped and then
459 assigned to emulated NUMA nodes.
460
461 This can be overridden by specifying
462
463 emu_size=<n>
464
465 on the kernel command line where also suffixes K, M, G, and T are
466 supported.
467
468endmenu
469
Heiko Carstens9236b4d2015-12-28 13:20:43 +0100470config SCHED_SMT
471 def_bool n
472
Heiko Carstens8d11e022010-10-29 16:50:37 +0200473config SCHED_MC
Heiko Carstens83a24e32011-12-27 11:27:09 +0100474 def_bool n
Heiko Carstens8d11e022010-10-29 16:50:37 +0200475
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200476config SCHED_BOOK
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100477 def_bool n
478
479config SCHED_TOPOLOGY
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100480 def_bool y
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100481 prompt "Topology scheduler support"
Heiko Carstens83a24e32011-12-27 11:27:09 +0100482 depends on SMP
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100483 select SCHED_SMT
Heiko Carstens83a24e32011-12-27 11:27:09 +0100484 select SCHED_MC
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100485 select SCHED_BOOK
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200486 help
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100487 Topology scheduler support improves the CPU scheduler's decision
488 making when dealing with machines that have multi-threading,
489 multiple cores or multiple books.
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200490
Jan Glauber843c48f2012-08-27 10:55:18 +0200491source kernel/Kconfig.preempt
492
Jan Glauber843c48f2012-08-27 10:55:18 +0200493source kernel/Kconfig.hz
494
495endmenu
496
497menu "Memory setup"
498
499config ARCH_SPARSEMEM_ENABLE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100500 def_bool y
Jan Glauber843c48f2012-08-27 10:55:18 +0200501 select SPARSEMEM_VMEMMAP_ENABLE
502 select SPARSEMEM_VMEMMAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
Jan Glauber843c48f2012-08-27 10:55:18 +0200504config ARCH_SPARSEMEM_DEFAULT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100505 def_bool y
Al Viroe65e1fc2006-09-12 03:04:40 -0400506
Jan Glauber843c48f2012-08-27 10:55:18 +0200507config ARCH_SELECT_MEMORY_MODEL
508 def_bool y
Heiko Carstens05445162012-05-14 10:12:41 +0200509
Jan Glauber843c48f2012-08-27 10:55:18 +0200510config ARCH_ENABLE_MEMORY_HOTPLUG
511 def_bool y if SPARSEMEM
Heiko Carstens05445162012-05-14 10:12:41 +0200512
Jan Glauber843c48f2012-08-27 10:55:18 +0200513config ARCH_ENABLE_MEMORY_HOTREMOVE
514 def_bool y
Heiko Carstens05445162012-05-14 10:12:41 +0200515
Martin Schwidefskyec66ad62014-02-12 14:16:18 +0100516config ARCH_ENABLE_SPLIT_PMD_PTLOCK
517 def_bool y
Martin Schwidefskyec66ad62014-02-12 14:16:18 +0100518
Jan Glauber843c48f2012-08-27 10:55:18 +0200519config FORCE_MAX_ZONEORDER
520 int
521 default "9"
Heiko Carstens05445162012-05-14 10:12:41 +0200522
Jan Glauber843c48f2012-08-27 10:55:18 +0200523source "mm/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
525config PACK_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100526 def_bool y
527 prompt "Pack kernel stack"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 help
529 This option enables the compiler option -mkernel-backchain if it
530 is available. If the option is available the compiler supports
531 the new stack layout which dramatically reduces the minimum stack
532 frame size. With an old compiler a non-leaf function needs a
533 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
534 -mkernel-backchain the minimum size drops to 16 byte on 31 bit
535 and 24 byte on 64 bit.
536
537 Say Y if you are unsure.
538
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539config CHECK_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100540 def_bool y
541 prompt "Detect kernel stack overflow"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 help
543 This option enables the compiler option -mstack-guard and
544 -mstack-size if they are available. If the compiler supports them
545 it will emit additional code to each function prolog to trigger
546 an illegal operation if the kernel stack is about to overflow.
547
548 Say N if you are unsure.
549
550config STACK_GUARD
551 int "Size of the guard area (128-1024)"
552 range 128 1024
553 depends on CHECK_STACK
554 default "256"
555 help
556 This allows you to specify the size of the guard area at the lower
557 end of the kernel stack. If the kernel stack points into the guard
558 area on function entry an illegal operation is triggered. The size
559 needs to be a power of 2. Please keep in mind that the size of an
560 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
561 The minimum size for the stack guard should be 256 for 31 bit and
562 512 for 64 bit.
563
Jan Glauber2c190da2011-03-15 17:08:19 +0100564config WARN_DYNAMIC_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100565 def_bool n
Jan Glauber2c190da2011-03-15 17:08:19 +0100566 prompt "Emit compiler warnings for function with dynamic stack usage"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 help
Jan Glauber2c190da2011-03-15 17:08:19 +0100568 This option enables the compiler option -mwarn-dynamicstack. If the
569 compiler supports this options generates warnings for functions
570 that dynamically allocate stack space using alloca.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571
572 Say N if you are unsure.
573
Jan Glauber843c48f2012-08-27 10:55:18 +0200574endmenu
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200575
Jan Glauber843c48f2012-08-27 10:55:18 +0200576menu "I/O subsystem"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578config QDIO
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100579 def_tristate y
580 prompt "QDIO support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 ---help---
Frank Pavlic8129ee12006-01-06 00:19:20 -0800582 This driver provides the Queued Direct I/O base support for
Ursula Braunefca13b2008-04-17 07:46:19 +0200583 IBM System z.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584
585 To compile this driver as a module, choose M here: the
586 module will be called qdio.
587
588 If unsure, say Y.
589
Jan Glauberc8717a32012-11-29 14:38:46 +0100590menuconfig PCI
591 bool "PCI support"
Jan Glauberc8717a32012-11-29 14:38:46 +0100592 select PCI_MSI
Gerald Schaefer8128f232015-08-27 15:33:03 +0200593 select IOMMU_SUPPORT
Jan Glauberc8717a32012-11-29 14:38:46 +0100594 help
595 Enable PCI support.
596
597if PCI
598
599config PCI_NR_FUNCTIONS
600 int "Maximum number of PCI functions (1-4096)"
601 range 1 4096
602 default "64"
603 help
604 This allows you to specify the maximum number of PCI functions which
605 this kernel will support.
606
Martin Schwidefsky1f44a222013-06-27 09:01:09 +0200607config PCI_NR_MSI
608 int "Maximum number of MSI interrupts (64-32768)"
609 range 64 32768
610 default "256"
611 help
612 This defines the number of virtual interrupts the kernel will
613 provide for MSI interrupts. If you configure your system to have
614 too few drivers will fail to allocate MSI interrupts for all
615 PCI devices.
616
Jan Glauberc8717a32012-11-29 14:38:46 +0100617source "drivers/pci/Kconfig"
Jan Glauberc8717a32012-11-29 14:38:46 +0100618
619endif # PCI
620
621config PCI_DOMAINS
622 def_bool PCI
623
624config HAS_IOMEM
625 def_bool PCI
626
627config IOMMU_HELPER
628 def_bool PCI
629
Jan Glauberc8717a32012-11-29 14:38:46 +0100630config NEED_SG_DMA_LENGTH
631 def_bool PCI
632
Jan Glauber91630032012-12-05 15:06:01 +0100633config NEED_DMA_MAP_STATE
634 def_bool PCI
635
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200636config CHSC_SCH
Sebastian Ottd9c11b12011-01-31 11:30:09 +0100637 def_tristate m
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100638 prompt "Support for CHSC subchannels"
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200639 help
640 This driver allows usage of CHSC subchannels. A CHSC subchannel
641 is usually present on LPAR only.
642 The driver creates a device /dev/chsc, which may be used to
643 obtain I/O configuration information about the machine and
644 to issue asynchronous chsc commands (DANGEROUS).
645 You will usually only want to use this interface on a special
646 LPAR designated for system management.
647
648 To compile this driver as a module, choose M here: the
649 module will be called chsc_sch.
650
651 If unsure, say N.
652
Sebastian Ott1d1c8f72012-08-28 16:46:26 +0200653config SCM_BUS
654 def_bool y
Sebastian Ott1d1c8f72012-08-28 16:46:26 +0200655 prompt "SCM bus driver"
656 help
657 Bus driver for Storage Class Memory.
658
Sebastian Otteadb86a2012-08-28 16:48:16 +0200659config EADM_SCH
660 def_tristate m
661 prompt "Support for EADM subchannels"
662 depends on SCM_BUS
663 help
664 This driver allows usage of EADM subchannels. EADM subchannels act
665 as a communication vehicle for SCM increments.
666
667 To compile this driver as a module, choose M here: the
668 module will be called eadm_sch.
669
Jan Glauber843c48f2012-08-27 10:55:18 +0200670endmenu
671
672menu "Dump support"
673
674config CRASH_DUMP
675 bool "kernel crash dumps"
Heiko Carstens5a798592015-02-12 13:08:27 +0100676 depends on SMP
Jan Glauber843c48f2012-08-27 10:55:18 +0200677 select KEXEC
678 help
679 Generate crash dump after being started by kexec.
680 Crash dump kernels are loaded in the main kernel with kexec-tools
681 into a specially reserved region and then later executed after
682 a crash by kdump/kexec.
Jan Glauber843c48f2012-08-27 10:55:18 +0200683 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
Michael Holzheubf28a592014-04-14 10:38:05 +0200684 This option also enables s390 zfcpdump.
685 See also <file:Documentation/s390/zfcpdump.txt>
Jan Glauber843c48f2012-08-27 10:55:18 +0200686
687endmenu
688
689menu "Executable file formats / Emulations"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691source "fs/Kconfig.binfmt"
692
Jan Glauber843c48f2012-08-27 10:55:18 +0200693config SECCOMP
694 def_bool y
695 prompt "Enable seccomp to safely compute untrusted bytecode"
696 depends on PROC_FS
697 help
698 This kernel feature is useful for number crunching applications
699 that may need to compute untrusted bytecode during their
700 execution. By using pipes or other transports made available to
701 the process as file descriptors supporting the read/write
702 syscalls, it's possible to isolate those applications in
703 their own address space using seccomp. Once seccomp is
704 enabled via /proc/<pid>/seccomp, it cannot be disabled
705 and the task is only allowed to execute a few safe syscalls
706 defined by each seccomp mode.
707
708 If unsure, say Y.
709
710endmenu
711
712menu "Power Management"
713
714config ARCH_HIBERNATION_POSSIBLE
Heiko Carstens5a798592015-02-12 13:08:27 +0100715 def_bool y
Jan Glauber843c48f2012-08-27 10:55:18 +0200716
717source "kernel/power/Kconfig"
718
719endmenu
720
721source "net/Kconfig"
722
723config PCMCIA
724 def_bool n
725
726config CCW
727 def_bool y
728
729source "drivers/Kconfig"
730
731source "fs/Kconfig"
732
733source "arch/s390/Kconfig.debug"
734
735source "security/Kconfig"
736
737source "crypto/Kconfig"
738
739source "lib/Kconfig"
740
741menu "Virtualization"
Heiko Carstens684de392008-03-05 12:37:14 +0100742
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743config PFAULT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100744 def_bool y
745 prompt "Pseudo page fault support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 help
747 Select this option, if you want to use PFAULT pseudo page fault
748 handling under VM. If running native or in LPAR, this option
749 has no effect. If your VM does not support PFAULT, PAGEEX
750 pseudo page fault handling will be used.
751 Note that VM 4.2 supports PFAULT but has a bug in its
752 implementation that causes some problems.
753 Everybody who wants to run Linux under VM != VM4.2 should select
754 this option.
755
756config SHARED_KERNEL
Heiko Carstens0eccc782012-09-25 14:53:15 +0200757 bool "VM shared kernel support"
758 depends on !JUMP_LABEL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 help
760 Select this option, if you want to share the text segment of the
761 Linux kernel between different VM guests. This reduces memory
762 usage with lots of guests but greatly increases kernel size.
Heiko Carstens9c9c1762007-03-05 23:35:45 +0100763 Also if a kernel was IPL'ed from a shared segment the kexec system
764 call will not work.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 You should only select this option if you know what you are
766 doing and want to exploit this feature.
767
768config CMM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100769 def_tristate n
770 prompt "Cooperative memory management"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 help
772 Select this option, if you want to enable the kernel interface
773 to reduce the memory size of the system. This is accomplished
774 by allocating pages of memory and put them "on hold". This only
775 makes sense for a system running under VM where the unused pages
776 will be reused by VM for other guest systems. The interface
777 allows an external monitor to balance memory of many systems.
778 Everybody who wants to run Linux under VM should select this
779 option.
780
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781config CMM_IUCV
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100782 def_bool y
783 prompt "IUCV special message interface to cooperative memory management"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
785 help
786 Select this option to enable the special message interface to
787 the cooperative memory management.
788
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789config APPLDATA_BASE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100790 def_bool n
791 prompt "Linux - VM Monitor Stream, base infrastructure"
Martin Schwidefskyc185b782008-12-25 13:39:25 +0100792 depends on PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 help
794 This provides a kernel interface for creating and updating z/VM APPLDATA
795 monitor records. The monitor records are updated at certain time
796 intervals, once the timer is started.
797 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
798 i.e. enables or disables monitoring on the Linux side.
799 A custom interval value (in seconds) can be written to
800 /proc/appldata/interval.
801
802 Defaults are 60 seconds interval and timer off.
803 The /proc entries can also be read from, showing the current settings.
804
805config APPLDATA_MEM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100806 def_tristate m
807 prompt "Monitor memory management statistics"
Al Viro62fb2ba2006-12-13 00:34:59 -0800808 depends on APPLDATA_BASE && VM_EVENT_COUNTERS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 help
810 This provides memory management related data to the Linux - VM Monitor
811 Stream, like paging/swapping rate, memory utilisation, etc.
812 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
813 APPLDATA monitor record, i.e. enables or disables monitoring this record
814 on the z/VM side.
815
816 Default is disabled.
817 The /proc entry can also be read from, showing the current settings.
818
819 This can also be compiled as a module, which will be called
820 appldata_mem.o.
821
822config APPLDATA_OS
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100823 def_tristate m
824 prompt "Monitor OS statistics"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 depends on APPLDATA_BASE
826 help
827 This provides OS related data to the Linux - VM Monitor Stream, like
828 CPU utilisation, etc.
829 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
830 APPLDATA monitor record, i.e. enables or disables monitoring this record
831 on the z/VM side.
832
833 Default is disabled.
834 This can also be compiled as a module, which will be called
835 appldata_os.o.
836
837config APPLDATA_NET_SUM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100838 def_tristate m
839 prompt "Monitor overall network statistics"
Sachin Sant70193af2009-03-26 15:24:00 +0100840 depends on APPLDATA_BASE && NET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 help
842 This provides network related data to the Linux - VM Monitor Stream,
843 currently there is only a total sum of network I/O statistics, no
844 per-interface data.
845 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
846 APPLDATA monitor record, i.e. enables or disables monitoring this record
847 on the z/VM side.
848
849 Default is disabled.
850 This can also be compiled as a module, which will be called
851 appldata_net_sum.o.
852
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700853config S390_HYPFS_FS
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100854 def_bool y
855 prompt "s390 hypervisor file system support"
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700856 select SYS_HYPERVISOR
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700857 help
858 This is a virtual file system intended to provide accounting
859 information in an s390 hypervisor environment.
860
Jan Glauber843c48f2012-08-27 10:55:18 +0200861source "arch/s390/kvm/Kconfig"
Michael Holzheu411ed322007-04-27 16:01:49 +0200862
Carsten Ottefa587742008-03-25 18:47:44 +0100863config S390_GUEST
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100864 def_bool y
Kees Cook510cf5a2012-10-02 11:16:42 -0700865 prompt "s390 support for virtio devices"
Chen Gang79b6f7f2013-07-23 16:26:08 +0800866 select TTY
Christian Borntraeger80629b02011-06-22 16:24:07 +0200867 select VIRTUALIZATION
Carsten Ottefa587742008-03-25 18:47:44 +0100868 select VIRTIO
Christian Borntraegerfaeba8302008-06-20 15:24:18 +0200869 select VIRTIO_CONSOLE
Carsten Ottefa587742008-03-25 18:47:44 +0100870 help
Cornelia Huckbdd1fc22012-08-27 12:56:48 +0200871 Enabling this option adds support for virtio based paravirtual device
872 drivers on s390.
873
Christian Borntraeger20766c02008-08-29 13:30:56 +0200874 Select this option if you want to run the kernel as a guest under
Cornelia Huckbdd1fc22012-08-27 12:56:48 +0200875 the KVM hypervisor.
Heiko Carstensbcf5cef2009-06-12 10:26:26 +0200876
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877endmenu