blob: 9e607bf2d640df1ba7aee69b2cccbc4fd5ff61cb [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 Carstens907fa062016-06-20 14:08:32 +020075 select ARCH_HAS_KCOV
Heiko Carstens47523c92014-12-22 10:07:04 +010076 select ARCH_HAS_SG_CHAIN
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010077 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Thomas Gleixner6beb0002009-11-09 15:21:34 +000078 select ARCH_INLINE_READ_LOCK
79 select ARCH_INLINE_READ_LOCK_BH
80 select ARCH_INLINE_READ_LOCK_IRQ
81 select ARCH_INLINE_READ_LOCK_IRQSAVE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010082 select ARCH_INLINE_READ_TRYLOCK
Thomas Gleixner6beb0002009-11-09 15:21:34 +000083 select ARCH_INLINE_READ_UNLOCK
84 select ARCH_INLINE_READ_UNLOCK_BH
85 select ARCH_INLINE_READ_UNLOCK_IRQ
86 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +010087 select ARCH_INLINE_SPIN_LOCK
88 select ARCH_INLINE_SPIN_LOCK_BH
89 select ARCH_INLINE_SPIN_LOCK_IRQ
90 select ARCH_INLINE_SPIN_LOCK_IRQSAVE
91 select ARCH_INLINE_SPIN_TRYLOCK
92 select ARCH_INLINE_SPIN_TRYLOCK_BH
93 select ARCH_INLINE_SPIN_UNLOCK
94 select ARCH_INLINE_SPIN_UNLOCK_BH
95 select ARCH_INLINE_SPIN_UNLOCK_IRQ
96 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
Thomas Gleixner6beb0002009-11-09 15:21:34 +000097 select ARCH_INLINE_WRITE_LOCK
98 select ARCH_INLINE_WRITE_LOCK_BH
99 select ARCH_INLINE_WRITE_LOCK_IRQ
100 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100101 select ARCH_INLINE_WRITE_TRYLOCK
Thomas Gleixner6beb0002009-11-09 15:21:34 +0000102 select ARCH_INLINE_WRITE_UNLOCK
103 select ARCH_INLINE_WRITE_UNLOCK_BH
104 select ARCH_INLINE_WRITE_UNLOCK_IRQ
105 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100106 select ARCH_SAVE_PAGE_KEYS if HIBERNATION
Christian Borntraeger36e7fda2014-08-05 09:57:51 +0200107 select ARCH_SUPPORTS_ATOMIC_RMW
Philipp Hachtmanna763bc82015-05-08 17:40:44 +0200108 select ARCH_SUPPORTS_NUMA_BALANCING
Christian Borntraeger295d8fa2015-10-29 01:16:04 +0100109 select ARCH_USE_BUILTIN_BSWAP
Heiko Carstensefc1d232013-09-05 13:26:17 +0200110 select ARCH_USE_CMPXCHG_LOCKREF
Martin Schwidefsky3f6813b2016-04-01 15:42:15 +0200111 select ARCH_WANTS_DYNAMIC_TASK_STRUCT
Philipp Hachtmanna763bc82015-05-08 17:40:44 +0200112 select ARCH_WANTS_PROT_NUMA_PROT_NONE
Will Deaconc1d7e012012-07-30 14:42:46 -0700113 select ARCH_WANT_IPC_PARSE_VERSION
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100114 select BUILDTIME_EXTABLE_SORT
115 select CLONE_BACKWARDS2
Heiko Carstens5d6a0162014-08-15 13:16:09 +0200116 select DYNAMIC_FTRACE if FUNCTION_TRACER
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100117 select GENERIC_CLOCKEVENTS
Hendrik Brueckner8f00b3e2015-02-19 12:22:02 +0100118 select GENERIC_CPU_AUTOPROBE
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100119 select GENERIC_CPU_DEVICES if !SMP
Heiko Carstens746479c2013-09-18 11:45:36 +0200120 select GENERIC_FIND_FIRST_BIT
Thomas Gleixnere80e7812012-04-20 13:05:52 +0000121 select GENERIC_SMP_IDLE_THREAD
Martin Schwidefsky79c74ec2013-11-22 10:04:53 +0100122 select GENERIC_TIME_VSYSCALL
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100123 select HAVE_ALIGNED_STRUCT_PAGE if SLUB
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900124 select HAVE_ARCH_AUDITSYSCALL
Philipp Hachtmanna763bc82015-05-08 17:40:44 +0200125 select HAVE_ARCH_EARLY_PFN_TO_NID
Heiko Carstens5a798592015-02-12 13:08:27 +0100126 select HAVE_ARCH_JUMP_LABEL
Zhaoxiu Zengfff7fb02016-05-20 17:03:57 -0700127 select CPU_NO_EFFICIENT_FFS if !HAVE_MARCH_Z9_109_FEATURES
Heiko Carstensc63cb462012-07-31 15:37:13 +0200128 select HAVE_ARCH_SECCOMP_FILTER
Martin Schwidefsky5614dd92015-04-22 14:47:42 +0200129 select HAVE_ARCH_SOFT_DIRTY
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100130 select HAVE_ARCH_TRACEHOOK
Heiko Carstens5a798592015-02-12 13:08:27 +0100131 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
Daniel Borkmann60777762016-05-13 19:08:28 +0200132 select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100133 select HAVE_CMPXCHG_DOUBLE
134 select HAVE_CMPXCHG_LOCAL
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100135 select HAVE_DEBUG_KMEMLEAK
Christian Borntraegere82becfc2016-02-02 21:46:34 -0800136 select HAVE_DMA_API_DEBUG
Heiko Carstens5a798592015-02-12 13:08:27 +0100137 select HAVE_DYNAMIC_FTRACE
138 select HAVE_DYNAMIC_FTRACE_WITH_REGS
Jiri Slaby5f56a5d2016-05-20 17:00:16 -0700139 select HAVE_EXIT_THREAD
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100140 select HAVE_FTRACE_MCOUNT_RECORD
Heiko Carstens5a798592015-02-12 13:08:27 +0100141 select HAVE_FUNCTION_GRAPH_TRACER
142 select HAVE_FUNCTION_TRACER
Heiko Carstens03b8c7b2014-03-02 13:09:47 +0100143 select HAVE_FUTEX_CMPXCHG if FUTEX
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100144 select HAVE_KERNEL_BZIP2
145 select HAVE_KERNEL_GZIP
Heiko Carstens8e2872c2013-07-18 15:18:24 +0200146 select HAVE_KERNEL_LZ4
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100147 select HAVE_KERNEL_LZMA
148 select HAVE_KERNEL_LZO
149 select HAVE_KERNEL_XZ
150 select HAVE_KPROBES
151 select HAVE_KRETPROBES
Heiko Carstens5a798592015-02-12 13:08:27 +0100152 select HAVE_KVM
Jiri Slaby21042d42015-03-26 10:10:17 +0100153 select HAVE_LIVEPATCH
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100154 select HAVE_MEMBLOCK
155 select HAVE_MEMBLOCK_NODE_MAP
Philipp Hachtmann50be6342014-01-29 18:16:01 +0100156 select HAVE_MEMBLOCK_PHYS_MAP
David Howells786d35d2012-09-28 14:31:03 +0930157 select HAVE_MOD_ARCH_SPECIFIC
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100158 select HAVE_OPROFILE
159 select HAVE_PERF_EVENTS
160 select HAVE_REGS_AND_STACK_ACCESS_API
161 select HAVE_SYSCALL_TRACEPOINTS
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100162 select HAVE_VIRT_CPU_ACCOUNTING
David Howells786d35d2012-09-28 14:31:03 +0930163 select MODULES_USE_ELF_RELA
Philipp Hachtmann50be6342014-01-29 18:16:01 +0100164 select NO_BOOTMEM
Al Viro7eddd992012-12-25 19:26:12 -0500165 select OLD_SIGACTION
Heiko Carstens93bead42013-09-06 10:03:30 +0200166 select OLD_SIGSUSPEND3
Sebastian Ottbb98f392016-06-02 14:57:17 +0200167 select SPARSE_IRQ
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100168 select SYSCTL_EXCEPTION_TRACE
Josh Triplett05634162014-02-26 18:13:06 -0800169 select TTY
Heiko Carstens0e0d04a2013-02-06 10:15:55 +0100170 select VIRT_CPU_ACCOUNTING
Heiko Carstens93bead42013-09-06 10:03:30 +0200171 select VIRT_TO_BUS
Petr Mladek42a0bb32016-05-20 17:00:33 -0700172 select HAVE_NMI
Philipp Hachtmann3a368f72014-03-06 18:25:13 +0100173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200175config SCHED_OMIT_FRAME_POINTER
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100176 def_bool y
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200177
Kirill A. Shutemovc81956c2015-04-14 15:46:00 -0700178config PGTABLE_LEVELS
179 int
Heiko Carstensc095a942015-12-28 12:53:51 +0100180 default 4
Kirill A. Shutemovc81956c2015-04-14 15:46:00 -0700181
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182source "init/Kconfig"
183
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700184source "kernel/Kconfig.freezer"
185
Jiri Slaby21042d42015-03-26 10:10:17 +0100186source "kernel/livepatch/Kconfig"
187
Jan Glauber843c48f2012-08-27 10:55:18 +0200188menu "Processor type and features"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189
Jan Glauber843c48f2012-08-27 10:55:18 +0200190config HAVE_MARCH_Z900_FEATURES
191 def_bool n
192
193config HAVE_MARCH_Z990_FEATURES
194 def_bool n
195 select HAVE_MARCH_Z900_FEATURES
196
197config HAVE_MARCH_Z9_109_FEATURES
198 def_bool n
199 select HAVE_MARCH_Z990_FEATURES
200
201config HAVE_MARCH_Z10_FEATURES
202 def_bool n
203 select HAVE_MARCH_Z9_109_FEATURES
204
205config HAVE_MARCH_Z196_FEATURES
206 def_bool n
207 select HAVE_MARCH_Z10_FEATURES
208
Heiko Carstens991c15052012-11-13 10:26:37 +0200209config HAVE_MARCH_ZEC12_FEATURES
210 def_bool n
211 select HAVE_MARCH_Z196_FEATURES
212
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100213config HAVE_MARCH_Z13_FEATURES
214 def_bool n
215 select HAVE_MARCH_ZEC12_FEATURES
216
Jan Glauber843c48f2012-08-27 10:55:18 +0200217choice
218 prompt "Processor type"
Martin Schwidefsky7072276e2016-04-18 17:10:16 +0200219 default MARCH_Z196
Jan Glauber843c48f2012-08-27 10:55:18 +0200220
221config MARCH_Z900
222 bool "IBM zSeries model z800 and z900"
Heiko Carstens5a798592015-02-12 13:08:27 +0100223 select HAVE_MARCH_Z900_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200224 help
225 Select this to enable optimizations for model z800/z900 (2064 and
226 2066 series). This will enable some optimizations that are not
227 available on older ESA/390 (31 Bit) only CPUs.
228
229config MARCH_Z990
230 bool "IBM zSeries model z890 and z990"
Heiko Carstens5a798592015-02-12 13:08:27 +0100231 select HAVE_MARCH_Z990_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200232 help
233 Select this to enable optimizations for model z890/z990 (2084 and
234 2086 series). The kernel will be slightly faster but will not work
235 on older machines.
236
237config MARCH_Z9_109
238 bool "IBM System z9"
Heiko Carstens5a798592015-02-12 13:08:27 +0100239 select HAVE_MARCH_Z9_109_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200240 help
241 Select this to enable optimizations for IBM System z9 (2094 and
242 2096 series). The kernel will be slightly faster but will not work
243 on older machines.
244
245config MARCH_Z10
246 bool "IBM System z10"
Heiko Carstens5a798592015-02-12 13:08:27 +0100247 select HAVE_MARCH_Z10_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200248 help
249 Select this to enable optimizations for IBM System z10 (2097 and
250 2098 series). The kernel will be slightly faster but will not work
251 on older machines.
252
253config MARCH_Z196
254 bool "IBM zEnterprise 114 and 196"
Heiko Carstens5a798592015-02-12 13:08:27 +0100255 select HAVE_MARCH_Z196_FEATURES
Jan Glauber843c48f2012-08-27 10:55:18 +0200256 help
257 Select this to enable optimizations for IBM zEnterprise 114 and 196
258 (2818 and 2817 series). The kernel will be slightly faster but will
259 not work on older machines.
260
Heiko Carstens991c15052012-11-13 10:26:37 +0200261config MARCH_ZEC12
Heiko Carstens59471222013-07-24 10:35:33 +0200262 bool "IBM zBC12 and zEC12"
Heiko Carstens5a798592015-02-12 13:08:27 +0100263 select HAVE_MARCH_ZEC12_FEATURES
Heiko Carstens991c15052012-11-13 10:26:37 +0200264 help
Heiko Carstens59471222013-07-24 10:35:33 +0200265 Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
266 2827 series). The kernel will be slightly faster but will not work on
267 older machines.
Heiko Carstens991c15052012-11-13 10:26:37 +0200268
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100269config MARCH_Z13
Heiko Carstensbb3aa612016-02-19 10:46:08 +0100270 bool "IBM z13s and z13"
Heiko Carstens5a798592015-02-12 13:08:27 +0100271 select HAVE_MARCH_Z13_FEATURES
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100272 help
Heiko Carstensbb3aa612016-02-19 10:46:08 +0100273 Select this to enable optimizations for IBM z13s and z13 (2965 and
274 2964 series). The kernel will be slightly faster but will not work on
275 older machines.
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100276
Jan Glauber843c48f2012-08-27 10:55:18 +0200277endchoice
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
Heiko Carstens1db9e052013-10-30 12:12:50 +0100279config MARCH_Z900_TUNE
280 def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
281
282config MARCH_Z990_TUNE
283 def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT
284
285config MARCH_Z9_109_TUNE
286 def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT
287
288config MARCH_Z10_TUNE
289 def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
290
291config MARCH_Z196_TUNE
292 def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
293
294config MARCH_ZEC12_TUNE
295 def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
296
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100297config MARCH_Z13_TUNE
298 def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
299
Heiko Carstens1db9e052013-10-30 12:12:50 +0100300choice
301 prompt "Tune code generation"
302 default TUNE_DEFAULT
303 help
304 Cause the compiler to tune (-mtune) the generated code for a machine.
305 This will make the code run faster on the selected machine but
306 somewhat slower on other machines.
307 This option only changes how the compiler emits instructions, not the
308 selection of instructions itself, so the resulting kernel will run on
309 all other machines.
310
311config TUNE_DEFAULT
312 bool "Default"
313 help
314 Tune the generated code for the target processor for which the kernel
315 will be compiled.
316
Heiko Carstens1db9e052013-10-30 12:12:50 +0100317config TUNE_Z900
318 bool "IBM zSeries model z800 and z900"
319
320config TUNE_Z990
321 bool "IBM zSeries model z890 and z990"
322
323config TUNE_Z9_109
324 bool "IBM System z9"
325
326config TUNE_Z10
327 bool "IBM System z10"
328
329config TUNE_Z196
330 bool "IBM zEnterprise 114 and 196"
331
332config TUNE_ZEC12
333 bool "IBM zBC12 and zEC12"
334
Martin Schwidefskyf8b2dcb2015-01-14 17:50:19 +0100335config TUNE_Z13
336 bool "IBM z13"
337
Heiko Carstens1db9e052013-10-30 12:12:50 +0100338endchoice
339
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800340config 64BIT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100341 def_bool y
Martin Schwidefskyd9f7a742006-09-28 16:55:39 +0200342
Jan Glauber843c48f2012-08-27 10:55:18 +0200343config COMPAT
344 def_bool y
345 prompt "Kernel support for 31 bit emulation"
Jan Glauber843c48f2012-08-27 10:55:18 +0200346 select COMPAT_BINFMT_ELF if BINFMT_ELF
347 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro7eddd992012-12-25 19:26:12 -0500348 select COMPAT_OLD_SIGACTION
Iulia Manda28138932015-04-15 16:16:41 -0700349 depends on MULTIUSER
Jan Glauber843c48f2012-08-27 10:55:18 +0200350 help
351 Select this option if you want to enable your system kernel to
352 handle system-calls from ELF binaries for 31 bit ESA. This option
353 (and some other stuff like libraries and such) is needed for
354 executing 31 bit applications. It is safe to say "Y".
355
356config SYSVIPC_COMPAT
357 def_bool y if COMPAT && SYSVIPC
358
359config KEYS_COMPAT
360 def_bool y if COMPAT && KEYS
361
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362config SMP
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100363 def_bool y
364 prompt "Symmetric multi-processing support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 ---help---
366 This enables support for systems with more than one CPU. If you have
367 a system with only one CPU, like most personal computers, say N. If
368 you have a system with more than one CPU, say Y.
369
Robert Graffham4a474152014-01-23 15:55:29 -0800370 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 machines, but will use only one CPU of a multiprocessor machine. If
372 you say Y here, the kernel will run on many, but not all,
Robert Graffham4a474152014-01-23 15:55:29 -0800373 uniprocessor machines. On a uniprocessor machine, the kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 will run faster if you say N here.
375
Adrian Bunk03502fa2008-02-03 15:50:21 +0200376 See also the SMP-HOWTO available at
377 <http://www.tldp.org/docs.html#howto>.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
379 Even if you don't know what to do here, say Y.
380
381config NR_CPUS
Heiko Carstens5c75a0d2015-01-28 16:52:01 +0100382 int "Maximum number of CPUs (2-512)"
383 range 2 512
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 depends on SMP
Heiko Carstens5a798592015-02-12 13:08:27 +0100385 default "64"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 help
387 This allows you to specify the maximum number of CPUs which this
Heiko Carstens5c75a0d2015-01-28 16:52:01 +0100388 kernel will support. The maximum supported value is 512 and the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 minimum value which makes sense is 2.
390
391 This is purely to save memory - each supported CPU adds
392 approximately sixteen kilobytes to the kernel image.
393
394config HOTPLUG_CPU
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100395 def_bool y
396 prompt "Support for hot-pluggable CPUs"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 depends on SMP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 help
399 Say Y here to be able to turn CPUs off and on. CPUs
400 can be controlled through /sys/devices/system/cpu/cpu#.
401 Say N if you want to disable CPU hotplug.
402
Philipp Hachtmann3a368f72014-03-06 18:25:13 +0100403# Some NUMA nodes have memory ranges that span
404# other nodes. Even though a pfn is valid and
405# between a node's start and end pfns, it may not
406# reside on that node. See memmap_init_zone()
407# for details. <- They meant memory holes!
408config NODES_SPAN_OTHER_NODES
409 def_bool NUMA
410
411config NUMA
412 bool "NUMA support"
Heiko Carstensc095a942015-12-28 12:53:51 +0100413 depends on SMP && SCHED_TOPOLOGY
Philipp Hachtmann3a368f72014-03-06 18:25:13 +0100414 default n
415 help
416 Enable NUMA support
417
418 This option adds NUMA support to the kernel.
419
420 An operation mode can be selected by appending
421 numa=<method> to the kernel command line.
422
423 The default behaviour is identical to appending numa=plain to
424 the command line. This will create just one node with all
425 available memory and all CPUs in it.
426
427config NODES_SHIFT
428 int "Maximum NUMA nodes (as a power of 2)"
429 range 1 10
430 depends on NUMA
431 default "4"
432 help
433 Specify the maximum number of NUMA nodes available on the target
434 system. Increases memory reserved to accommodate various tables.
435
Michael Holzheuc29a7ba2014-03-06 18:47:21 +0100436menu "Select NUMA modes"
437 depends on NUMA
438
439config NUMA_EMU
440 bool "NUMA emulation"
441 default y
442 help
443 Numa emulation mode will split the available system memory into
444 equal chunks which then are distributed over the configured number
445 of nodes in a round-robin manner.
446
447 The number of fake nodes is limited by the number of available memory
448 chunks (i.e. memory size / fake size) and the number of supported
449 nodes in the kernel.
450
451 The CPUs are assigned to the nodes in a way that partially respects
452 the original machine topology (if supported by the machine).
453 Fair distribution of the CPUs is not guaranteed.
454
455config EMU_SIZE
456 hex "NUMA emulation memory chunk size"
457 default 0x10000000
458 range 0x400000 0x100000000
459 depends on NUMA_EMU
460 help
461 Select the default size by which the memory is chopped and then
462 assigned to emulated NUMA nodes.
463
464 This can be overridden by specifying
465
466 emu_size=<n>
467
468 on the kernel command line where also suffixes K, M, G, and T are
469 supported.
470
471endmenu
472
Heiko Carstens9236b4d2015-12-28 13:20:43 +0100473config SCHED_SMT
474 def_bool n
475
Heiko Carstens8d11e022010-10-29 16:50:37 +0200476config SCHED_MC
Heiko Carstens83a24e32011-12-27 11:27:09 +0100477 def_bool n
Heiko Carstens8d11e022010-10-29 16:50:37 +0200478
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200479config SCHED_BOOK
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100480 def_bool n
481
Heiko Carstensadac0f12016-05-25 10:25:50 +0200482config SCHED_DRAWER
483 def_bool n
484
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100485config SCHED_TOPOLOGY
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100486 def_bool y
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100487 prompt "Topology scheduler support"
Heiko Carstens83a24e32011-12-27 11:27:09 +0100488 depends on SMP
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100489 select SCHED_SMT
Heiko Carstens83a24e32011-12-27 11:27:09 +0100490 select SCHED_MC
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100491 select SCHED_BOOK
Heiko Carstensadac0f12016-05-25 10:25:50 +0200492 select SCHED_DRAWER
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200493 help
Martin Schwidefsky10ad34b2015-01-14 17:52:10 +0100494 Topology scheduler support improves the CPU scheduler's decision
495 making when dealing with machines that have multi-threading,
496 multiple cores or multiple books.
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200497
Jan Glauber843c48f2012-08-27 10:55:18 +0200498source kernel/Kconfig.preempt
499
Jan Glauber843c48f2012-08-27 10:55:18 +0200500source kernel/Kconfig.hz
501
502endmenu
503
504menu "Memory setup"
505
506config ARCH_SPARSEMEM_ENABLE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100507 def_bool y
Jan Glauber843c48f2012-08-27 10:55:18 +0200508 select SPARSEMEM_VMEMMAP_ENABLE
509 select SPARSEMEM_VMEMMAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
Jan Glauber843c48f2012-08-27 10:55:18 +0200511config ARCH_SPARSEMEM_DEFAULT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100512 def_bool y
Al Viroe65e1fc2006-09-12 03:04:40 -0400513
Jan Glauber843c48f2012-08-27 10:55:18 +0200514config ARCH_SELECT_MEMORY_MODEL
515 def_bool y
Heiko Carstens05445162012-05-14 10:12:41 +0200516
Jan Glauber843c48f2012-08-27 10:55:18 +0200517config ARCH_ENABLE_MEMORY_HOTPLUG
518 def_bool y if SPARSEMEM
Heiko Carstens05445162012-05-14 10:12:41 +0200519
Jan Glauber843c48f2012-08-27 10:55:18 +0200520config ARCH_ENABLE_MEMORY_HOTREMOVE
521 def_bool y
Heiko Carstens05445162012-05-14 10:12:41 +0200522
Martin Schwidefskyec66ad62014-02-12 14:16:18 +0100523config ARCH_ENABLE_SPLIT_PMD_PTLOCK
524 def_bool y
Martin Schwidefskyec66ad62014-02-12 14:16:18 +0100525
Jan Glauber843c48f2012-08-27 10:55:18 +0200526config FORCE_MAX_ZONEORDER
527 int
528 default "9"
Heiko Carstens05445162012-05-14 10:12:41 +0200529
Jan Glauber843c48f2012-08-27 10:55:18 +0200530source "mm/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531
532config PACK_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100533 def_bool y
534 prompt "Pack kernel stack"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 help
536 This option enables the compiler option -mkernel-backchain if it
537 is available. If the option is available the compiler supports
538 the new stack layout which dramatically reduces the minimum stack
539 frame size. With an old compiler a non-leaf function needs a
540 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
541 -mkernel-backchain the minimum size drops to 16 byte on 31 bit
542 and 24 byte on 64 bit.
543
544 Say Y if you are unsure.
545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546config CHECK_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100547 def_bool y
548 prompt "Detect kernel stack overflow"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 help
550 This option enables the compiler option -mstack-guard and
551 -mstack-size if they are available. If the compiler supports them
552 it will emit additional code to each function prolog to trigger
553 an illegal operation if the kernel stack is about to overflow.
554
555 Say N if you are unsure.
556
557config STACK_GUARD
558 int "Size of the guard area (128-1024)"
559 range 128 1024
560 depends on CHECK_STACK
561 default "256"
562 help
563 This allows you to specify the size of the guard area at the lower
564 end of the kernel stack. If the kernel stack points into the guard
565 area on function entry an illegal operation is triggered. The size
566 needs to be a power of 2. Please keep in mind that the size of an
567 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
568 The minimum size for the stack guard should be 256 for 31 bit and
569 512 for 64 bit.
570
Jan Glauber2c190da2011-03-15 17:08:19 +0100571config WARN_DYNAMIC_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100572 def_bool n
Jan Glauber2c190da2011-03-15 17:08:19 +0100573 prompt "Emit compiler warnings for function with dynamic stack usage"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 help
Jan Glauber2c190da2011-03-15 17:08:19 +0100575 This option enables the compiler option -mwarn-dynamicstack. If the
576 compiler supports this options generates warnings for functions
577 that dynamically allocate stack space using alloca.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
579 Say N if you are unsure.
580
Jan Glauber843c48f2012-08-27 10:55:18 +0200581endmenu
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200582
Jan Glauber843c48f2012-08-27 10:55:18 +0200583menu "I/O subsystem"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585config QDIO
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100586 def_tristate y
587 prompt "QDIO support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 ---help---
Frank Pavlic8129ee12006-01-06 00:19:20 -0800589 This driver provides the Queued Direct I/O base support for
Ursula Braunefca13b2008-04-17 07:46:19 +0200590 IBM System z.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591
592 To compile this driver as a module, choose M here: the
593 module will be called qdio.
594
595 If unsure, say Y.
596
Jan Glauberc8717a32012-11-29 14:38:46 +0100597menuconfig PCI
598 bool "PCI support"
Jan Glauberc8717a32012-11-29 14:38:46 +0100599 select PCI_MSI
Gerald Schaefer8128f23c2015-08-27 15:33:03 +0200600 select IOMMU_SUPPORT
Jan Glauberc8717a32012-11-29 14:38:46 +0100601 help
602 Enable PCI support.
603
604if PCI
605
606config PCI_NR_FUNCTIONS
607 int "Maximum number of PCI functions (1-4096)"
608 range 1 4096
609 default "64"
610 help
611 This allows you to specify the maximum number of PCI functions which
612 this kernel will support.
613
614source "drivers/pci/Kconfig"
Jan Glauberc8717a32012-11-29 14:38:46 +0100615
616endif # PCI
617
618config PCI_DOMAINS
619 def_bool PCI
620
621config HAS_IOMEM
622 def_bool PCI
623
624config IOMMU_HELPER
625 def_bool PCI
626
Jan Glauberc8717a32012-11-29 14:38:46 +0100627config NEED_SG_DMA_LENGTH
628 def_bool PCI
629
Jan Glauber91630032012-12-05 15:06:01 +0100630config NEED_DMA_MAP_STATE
631 def_bool PCI
632
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200633config CHSC_SCH
Sebastian Ottd9c11b12011-01-31 11:30:09 +0100634 def_tristate m
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100635 prompt "Support for CHSC subchannels"
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200636 help
637 This driver allows usage of CHSC subchannels. A CHSC subchannel
638 is usually present on LPAR only.
639 The driver creates a device /dev/chsc, which may be used to
640 obtain I/O configuration information about the machine and
641 to issue asynchronous chsc commands (DANGEROUS).
642 You will usually only want to use this interface on a special
643 LPAR designated for system management.
644
645 To compile this driver as a module, choose M here: the
646 module will be called chsc_sch.
647
648 If unsure, say N.
649
Sebastian Ott1d1c8f72012-08-28 16:46:26 +0200650config SCM_BUS
651 def_bool y
Sebastian Ott1d1c8f72012-08-28 16:46:26 +0200652 prompt "SCM bus driver"
653 help
654 Bus driver for Storage Class Memory.
655
Sebastian Otteadb86a2012-08-28 16:48:16 +0200656config EADM_SCH
657 def_tristate m
658 prompt "Support for EADM subchannels"
659 depends on SCM_BUS
660 help
661 This driver allows usage of EADM subchannels. EADM subchannels act
662 as a communication vehicle for SCM increments.
663
664 To compile this driver as a module, choose M here: the
665 module will be called eadm_sch.
666
Jan Glauber843c48f2012-08-27 10:55:18 +0200667endmenu
668
669menu "Dump support"
670
671config CRASH_DUMP
672 bool "kernel crash dumps"
Heiko Carstens5a798592015-02-12 13:08:27 +0100673 depends on SMP
Jan Glauber843c48f2012-08-27 10:55:18 +0200674 select KEXEC
675 help
676 Generate crash dump after being started by kexec.
677 Crash dump kernels are loaded in the main kernel with kexec-tools
678 into a specially reserved region and then later executed after
679 a crash by kdump/kexec.
Jan Glauber843c48f2012-08-27 10:55:18 +0200680 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
Michael Holzheubf28a592014-04-14 10:38:05 +0200681 This option also enables s390 zfcpdump.
682 See also <file:Documentation/s390/zfcpdump.txt>
Jan Glauber843c48f2012-08-27 10:55:18 +0200683
684endmenu
685
686menu "Executable file formats / Emulations"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688source "fs/Kconfig.binfmt"
689
Jan Glauber843c48f2012-08-27 10:55:18 +0200690config SECCOMP
691 def_bool y
692 prompt "Enable seccomp to safely compute untrusted bytecode"
693 depends on PROC_FS
694 help
695 This kernel feature is useful for number crunching applications
696 that may need to compute untrusted bytecode during their
697 execution. By using pipes or other transports made available to
698 the process as file descriptors supporting the read/write
699 syscalls, it's possible to isolate those applications in
700 their own address space using seccomp. Once seccomp is
701 enabled via /proc/<pid>/seccomp, it cannot be disabled
702 and the task is only allowed to execute a few safe syscalls
703 defined by each seccomp mode.
704
705 If unsure, say Y.
706
707endmenu
708
709menu "Power Management"
710
711config ARCH_HIBERNATION_POSSIBLE
Heiko Carstens5a798592015-02-12 13:08:27 +0100712 def_bool y
Jan Glauber843c48f2012-08-27 10:55:18 +0200713
714source "kernel/power/Kconfig"
715
716endmenu
717
718source "net/Kconfig"
719
720config PCMCIA
721 def_bool n
722
723config CCW
724 def_bool y
725
726source "drivers/Kconfig"
727
728source "fs/Kconfig"
729
730source "arch/s390/Kconfig.debug"
731
732source "security/Kconfig"
733
734source "crypto/Kconfig"
735
736source "lib/Kconfig"
737
738menu "Virtualization"
Heiko Carstens684de392008-03-05 12:37:14 +0100739
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740config PFAULT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100741 def_bool y
742 prompt "Pseudo page fault support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 help
744 Select this option, if you want to use PFAULT pseudo page fault
745 handling under VM. If running native or in LPAR, this option
746 has no effect. If your VM does not support PFAULT, PAGEEX
747 pseudo page fault handling will be used.
748 Note that VM 4.2 supports PFAULT but has a bug in its
749 implementation that causes some problems.
750 Everybody who wants to run Linux under VM != VM4.2 should select
751 this option.
752
753config SHARED_KERNEL
Heiko Carstens0eccc782012-09-25 14:53:15 +0200754 bool "VM shared kernel support"
755 depends on !JUMP_LABEL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 help
757 Select this option, if you want to share the text segment of the
758 Linux kernel between different VM guests. This reduces memory
759 usage with lots of guests but greatly increases kernel size.
Heiko Carstens9c9c1762007-03-05 23:35:45 +0100760 Also if a kernel was IPL'ed from a shared segment the kexec system
761 call will not work.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 You should only select this option if you know what you are
763 doing and want to exploit this feature.
764
765config CMM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100766 def_tristate n
767 prompt "Cooperative memory management"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 help
769 Select this option, if you want to enable the kernel interface
770 to reduce the memory size of the system. This is accomplished
771 by allocating pages of memory and put them "on hold". This only
772 makes sense for a system running under VM where the unused pages
773 will be reused by VM for other guest systems. The interface
774 allows an external monitor to balance memory of many systems.
775 Everybody who wants to run Linux under VM should select this
776 option.
777
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778config CMM_IUCV
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100779 def_bool y
780 prompt "IUCV special message interface to cooperative memory management"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
782 help
783 Select this option to enable the special message interface to
784 the cooperative memory management.
785
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786config APPLDATA_BASE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100787 def_bool n
788 prompt "Linux - VM Monitor Stream, base infrastructure"
Martin Schwidefskyc185b782008-12-25 13:39:25 +0100789 depends on PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790 help
791 This provides a kernel interface for creating and updating z/VM APPLDATA
792 monitor records. The monitor records are updated at certain time
793 intervals, once the timer is started.
794 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
795 i.e. enables or disables monitoring on the Linux side.
796 A custom interval value (in seconds) can be written to
797 /proc/appldata/interval.
798
799 Defaults are 60 seconds interval and timer off.
800 The /proc entries can also be read from, showing the current settings.
801
802config APPLDATA_MEM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100803 def_tristate m
804 prompt "Monitor memory management statistics"
Al Viro62fb2ba2006-12-13 00:34:59 -0800805 depends on APPLDATA_BASE && VM_EVENT_COUNTERS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 help
807 This provides memory management related data to the Linux - VM Monitor
808 Stream, like paging/swapping rate, memory utilisation, etc.
809 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
810 APPLDATA monitor record, i.e. enables or disables monitoring this record
811 on the z/VM side.
812
813 Default is disabled.
814 The /proc entry can also be read from, showing the current settings.
815
816 This can also be compiled as a module, which will be called
817 appldata_mem.o.
818
819config APPLDATA_OS
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100820 def_tristate m
821 prompt "Monitor OS statistics"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 depends on APPLDATA_BASE
823 help
824 This provides OS related data to the Linux - VM Monitor Stream, like
825 CPU utilisation, etc.
826 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
827 APPLDATA monitor record, i.e. enables or disables monitoring this record
828 on the z/VM side.
829
830 Default is disabled.
831 This can also be compiled as a module, which will be called
832 appldata_os.o.
833
834config APPLDATA_NET_SUM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100835 def_tristate m
836 prompt "Monitor overall network statistics"
Sachin Sant70193af2009-03-26 15:24:00 +0100837 depends on APPLDATA_BASE && NET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 help
839 This provides network related data to the Linux - VM Monitor Stream,
840 currently there is only a total sum of network I/O statistics, no
841 per-interface data.
842 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
843 APPLDATA monitor record, i.e. enables or disables monitoring this record
844 on the z/VM side.
845
846 Default is disabled.
847 This can also be compiled as a module, which will be called
848 appldata_net_sum.o.
849
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700850config S390_HYPFS_FS
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100851 def_bool y
852 prompt "s390 hypervisor file system support"
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700853 select SYS_HYPERVISOR
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700854 help
855 This is a virtual file system intended to provide accounting
856 information in an s390 hypervisor environment.
857
Jan Glauber843c48f2012-08-27 10:55:18 +0200858source "arch/s390/kvm/Kconfig"
Michael Holzheu411ed322007-04-27 16:01:49 +0200859
Carsten Ottefa587742008-03-25 18:47:44 +0100860config S390_GUEST
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100861 def_bool y
Kees Cook510cf5a2012-10-02 11:16:42 -0700862 prompt "s390 support for virtio devices"
Chen Gang79b6f7f2013-07-23 16:26:08 +0800863 select TTY
Christian Borntraeger80629b02011-06-22 16:24:07 +0200864 select VIRTUALIZATION
Carsten Ottefa587742008-03-25 18:47:44 +0100865 select VIRTIO
Christian Borntraegerfaeba8302008-06-20 15:24:18 +0200866 select VIRTIO_CONSOLE
Carsten Ottefa587742008-03-25 18:47:44 +0100867 help
Cornelia Huckbdd1fc22012-08-27 12:56:48 +0200868 Enabling this option adds support for virtio based paravirtual device
869 drivers on s390.
870
Christian Borntraeger20766c02008-08-29 13:30:56 +0200871 Select this option if you want to run the kernel as a guest under
Cornelia Huckbdd1fc22012-08-27 12:56:48 +0200872 the KVM hypervisor.
Heiko Carstensbcf5cef2009-06-12 10:26:26 +0200873
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874endmenu