blob: ed5cb5af52816940d45c6610e3e2e0d8c1d60a82 [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
Ingo Molnar2b105ff2006-07-03 00:25:02 -07007config LOCKDEP_SUPPORT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +02008 def_bool y
Ingo Molnar2b105ff2006-07-03 00:25:02 -07009
Heiko Carstens5bdc9b42006-07-03 00:24:41 -070010config STACKTRACE_SUPPORT
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020011 def_bool y
Heiko Carstens5bdc9b42006-07-03 00:24:41 -070012
Heiko Carstensa3afe702008-02-05 16:50:45 +010013config HAVE_LATENCYTOP_SUPPORT
14 def_bool y
15
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
Martin Schwidefskyb0206322008-12-25 13:38:36 +010031config GENERIC_TIME_VSYSCALL
32 def_bool y
33
Heiko Carstens5a62b192008-04-17 07:46:25 +020034config GENERIC_CLOCKEVENTS
35 def_bool y
36
Heiko Carstensc0007f12007-04-27 16:01:42 +020037config GENERIC_BUG
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010038 def_bool y if BUG
Heiko Carstensc0007f12007-04-27 16:01:42 +020039
Heiko Carstens52499f42010-02-26 22:37:44 +010040config GENERIC_BUG_RELATIVE_POINTERS
41 def_bool y
42
Al Viro23db7642007-02-11 18:15:29 +000043config NO_IOMEM
Al Viro5ea81762007-02-11 15:41:31 +000044 def_bool y
45
Heiko Carstens411f0f32007-05-06 14:49:09 -070046config NO_DMA
47 def_bool y
48
FUJITA Tomonorieca577e2010-10-25 16:10:50 +020049config ARCH_DMA_ADDR_T_64BIT
50 def_bool 64BIT
51
Martin Schwidefskyb6b40c52008-02-05 16:50:42 +010052config GENERIC_LOCKBREAK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010053 def_bool y if SMP && PREEMPT
Martin Schwidefskyb6b40c52008-02-05 16:50:42 +010054
Carsten Otte402b0862008-03-25 18:47:10 +010055config PGSTE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +010056 def_bool y if KVM
Carsten Otte402b0862008-03-25 18:47:10 +010057
Martin Schwidefskyc185b782008-12-25 13:39:25 +010058config VIRT_CPU_ACCOUNTING
59 def_bool y
60
Akinobu Mita6a11f752009-03-31 15:23:17 -070061config ARCH_SUPPORTS_DEBUG_PAGEALLOC
62 def_bool y
63
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -080064config S390
Martin Schwidefsky61d48c22007-05-10 15:46:00 +020065 def_bool y
Heiko Carstensca9fc752008-12-25 13:38:39 +010066 select USE_GENERIC_SMP_HELPERS if SMP
Heiko Carstensed6bb612009-01-14 14:14:01 +010067 select HAVE_SYSCALL_WRAPPERS
Heiko Carstens5d360a72008-12-25 13:38:56 +010068 select HAVE_FUNCTION_TRACER
Heiko Carstens8b4488f2009-06-12 10:26:45 +020069 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
Heiko Carstensdfd9f7a2009-06-12 10:26:44 +020070 select HAVE_FTRACE_MCOUNT_RECORD
Heiko Carstensb25c4772010-10-29 16:50:42 +020071 select HAVE_C_RECORDMCOUNT
Josh Stone66700002009-08-24 14:43:11 -070072 select HAVE_SYSCALL_TRACEPOINTS
Heiko Carstensdfd9f7a2009-06-12 10:26:44 +020073 select HAVE_DYNAMIC_FTRACE
Heiko Carstens88dbd202009-06-12 10:26:46 +020074 select HAVE_FUNCTION_GRAPH_TRACER
Heiko Carstens952974ac62010-02-12 13:38:40 +010075 select HAVE_REGS_AND_STACK_ACCESS_API
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050076 select HAVE_OPROFILE
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050077 select HAVE_KPROBES
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080078 select HAVE_KRETPROBES
Christian Borntraeger77b455f2008-03-25 18:47:36 +010079 select HAVE_KVM if 64BIT
Martin Schwidefsky753c4dd2008-10-10 21:33:20 +020080 select HAVE_ARCH_TRACEHOOK
Rusty Russell98a79d62008-12-13 21:19:41 +103081 select INIT_ALL_POSSIBLE
Peter Zijlstrae360adb2010-10-14 14:01:34 +080082 select HAVE_IRQ_WORK
Ingo Molnarcdd6c482009-09-21 12:02:48 +020083 select HAVE_PERF_EVENTS
Huang Yingdf013ff2011-07-13 13:14:22 +080084 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Martin Schwidefsky1844c9b2010-02-26 22:37:53 +010085 select HAVE_KERNEL_GZIP
86 select HAVE_KERNEL_BZIP2
87 select HAVE_KERNEL_LZMA
Heiko Carstenscdf56642010-05-26 23:27:12 +020088 select HAVE_KERNEL_LZO
Heiko Carstensd7b081a2011-03-15 17:08:32 +010089 select HAVE_KERNEL_XZ
Martin Schwidefsky80217142010-10-25 16:10:11 +020090 select HAVE_GET_USER_PAGES_FAST
Gerald Schaefer34b133f2011-01-05 12:48:14 +010091 select HAVE_ARCH_MUTEX_CPU_RELAX
Jan Glauber5373db82011-03-16 15:58:30 -040092 select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
Martin Schwidefsky36409f62011-06-06 14:14:41 +020093 select HAVE_RCU_TABLE_FREE if SMP
Thomas Gleixner6beb0002009-11-09 15:21:34 +000094 select ARCH_INLINE_SPIN_TRYLOCK
95 select ARCH_INLINE_SPIN_TRYLOCK_BH
96 select ARCH_INLINE_SPIN_LOCK
97 select ARCH_INLINE_SPIN_LOCK_BH
98 select ARCH_INLINE_SPIN_LOCK_IRQ
99 select ARCH_INLINE_SPIN_LOCK_IRQSAVE
100 select ARCH_INLINE_SPIN_UNLOCK
101 select ARCH_INLINE_SPIN_UNLOCK_BH
102 select ARCH_INLINE_SPIN_UNLOCK_IRQ
103 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
104 select ARCH_INLINE_READ_TRYLOCK
105 select ARCH_INLINE_READ_LOCK
106 select ARCH_INLINE_READ_LOCK_BH
107 select ARCH_INLINE_READ_LOCK_IRQ
108 select ARCH_INLINE_READ_LOCK_IRQSAVE
109 select ARCH_INLINE_READ_UNLOCK
110 select ARCH_INLINE_READ_UNLOCK_BH
111 select ARCH_INLINE_READ_UNLOCK_IRQ
112 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
113 select ARCH_INLINE_WRITE_TRYLOCK
114 select ARCH_INLINE_WRITE_LOCK
115 select ARCH_INLINE_WRITE_LOCK_BH
116 select ARCH_INLINE_WRITE_LOCK_IRQ
117 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
118 select ARCH_INLINE_WRITE_UNLOCK
119 select ARCH_INLINE_WRITE_UNLOCK_BH
120 select ARCH_INLINE_WRITE_UNLOCK_IRQ
121 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200123config SCHED_OMIT_FRAME_POINTER
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100124 def_bool y
Martin Schwidefskyfca3e352009-07-07 16:37:10 +0200125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126source "init/Kconfig"
127
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700128source "kernel/Kconfig.freezer"
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130menu "Base setup"
131
132comment "Processor type and features"
133
Heiko Carstens5a62b192008-04-17 07:46:25 +0200134source "kernel/time/Kconfig"
135
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800136config 64BIT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100137 def_bool y
138 prompt "64 bit kernel"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 help
Heiko Carstensdb81a232010-10-29 16:50:36 +0200140 Select this option if you have an IBM z/Architecture machine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 and want to use the 64 bit addressing mode.
142
Martin Schwidefskyd9f7a742006-09-28 16:55:39 +0200143config 32BIT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100144 def_bool y if !64BIT
Martin Schwidefskyd9f7a742006-09-28 16:55:39 +0200145
Martin Schwidefsky07606302009-07-07 16:37:13 +0200146config KTIME_SCALAR
147 def_bool 32BIT
148
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149config SMP
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100150 def_bool y
151 prompt "Symmetric multi-processing support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 ---help---
153 This enables support for systems with more than one CPU. If you have
154 a system with only one CPU, like most personal computers, say N. If
155 you have a system with more than one CPU, say Y.
156
157 If you say N here, the kernel will run on single and multiprocessor
158 machines, but will use only one CPU of a multiprocessor machine. If
159 you say Y here, the kernel will run on many, but not all,
160 singleprocessor machines. On a singleprocessor machine, the kernel
161 will run faster if you say N here.
162
Adrian Bunk03502fa2008-02-03 15:50:21 +0200163 See also the SMP-HOWTO available at
164 <http://www.tldp.org/docs.html#howto>.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166 Even if you don't know what to do here, say Y.
167
168config NR_CPUS
169 int "Maximum number of CPUs (2-64)"
170 range 2 64
171 depends on SMP
Heiko Carstens057c5cb2008-02-19 15:29:25 +0100172 default "32" if !64BIT
173 default "64" if 64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 help
175 This allows you to specify the maximum number of CPUs which this
176 kernel will support. The maximum supported value is 64 and the
177 minimum value which makes sense is 2.
178
179 This is purely to save memory - each supported CPU adds
180 approximately sixteen kilobytes to the kernel image.
181
182config HOTPLUG_CPU
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100183 def_bool y
184 prompt "Support for hot-pluggable CPUs"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 depends on SMP
186 select HOTPLUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 help
188 Say Y here to be able to turn CPUs off and on. CPUs
189 can be controlled through /sys/devices/system/cpu/cpu#.
190 Say N if you want to disable CPU hotplug.
191
Heiko Carstens8d11e022010-10-29 16:50:37 +0200192config SCHED_MC
193 def_bool y
194 prompt "Multi-core scheduler support"
195 depends on SMP
196 help
197 Multi-core scheduler support improves the CPU scheduler's decision
198 making when dealing with multi-core CPU chips at a cost of slightly
199 increased overhead in some places.
200
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200201config SCHED_BOOK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100202 def_bool y
203 prompt "Book scheduler support"
Heiko Carstens8d11e022010-10-29 16:50:37 +0200204 depends on SMP && SCHED_MC
Heiko Carstens4cb14bc2010-08-31 10:28:18 +0200205 help
206 Book scheduler support improves the CPU scheduler's decision making
207 when dealing with machines that have several books.
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209config MATHEMU
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100210 def_bool y
211 prompt "IEEE FPU emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 depends on MARCH_G5
213 help
214 This option is required for IEEE compliant floating point arithmetic
Heiko Carstensdb81a232010-10-29 16:50:36 +0200215 on older ESA/390 machines. Say Y unless you know your machine doesn't
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 need this.
217
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800218config COMPAT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100219 def_bool y
220 prompt "Kernel support for 31 bit emulation"
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800221 depends on 64BIT
Martin Schwidefsky63506c42008-07-14 09:58:54 +0200222 select COMPAT_BINFMT_ELF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 help
224 Select this option if you want to enable your system kernel to
225 handle system-calls from ELF binaries for 31 bit ESA. This option
226 (and some other stuff like libraries and such) is needed for
227 executing 31 bit applications. It is safe to say "Y".
228
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229config SYSVIPC_COMPAT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100230 def_bool y if COMPAT && SYSVIPC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231
Al Viroe65e1fc2006-09-12 03:04:40 -0400232config AUDIT_ARCH
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100233 def_bool y
Al Viroe65e1fc2006-09-12 03:04:40 -0400234
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235comment "Code generation options"
236
237choice
238 prompt "Processor type"
239 default MARCH_G5
240
241config MARCH_G5
Heiko Carstensdb81a232010-10-29 16:50:36 +0200242 bool "System/390 model G5 and G6"
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800243 depends on !64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 help
245 Select this to build a 31 bit kernel that works
Heiko Carstensdb81a232010-10-29 16:50:36 +0200246 on all ESA/390 and z/Architecture machines.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
248config MARCH_Z900
Heiko Carstensdb81a232010-10-29 16:50:36 +0200249 bool "IBM zSeries model z800 and z900"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 help
Heiko Carstensdb81a232010-10-29 16:50:36 +0200251 Select this to enable optimizations for model z800/z900 (2064 and
252 2066 series). This will enable some optimizations that are not
253 available on older ESA/390 (31 Bit) only CPUs.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255config MARCH_Z990
Heiko Carstensdb81a232010-10-29 16:50:36 +0200256 bool "IBM zSeries model z890 and z990"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 help
Heiko Carstensdb81a232010-10-29 16:50:36 +0200258 Select this to enable optimizations for model z890/z990 (2084 and
259 2086 series). The kernel will be slightly faster but will not work
260 on older machines.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
Christian Borntraeger0efa4702006-09-28 16:55:46 +0200262config MARCH_Z9_109
263 bool "IBM System z9"
264 help
Heiko Carstensdb81a232010-10-29 16:50:36 +0200265 Select this to enable optimizations for IBM System z9 (2094 and
266 2096 series). The kernel will be slightly faster but will not work
267 on older machines.
Christian Borntraeger0efa4702006-09-28 16:55:46 +0200268
Martin Schwidefskye37f50e2008-12-25 13:39:19 +0100269config MARCH_Z10
270 bool "IBM System z10"
271 help
Heiko Carstensdb81a232010-10-29 16:50:36 +0200272 Select this to enable optimizations for IBM System z10 (2097 and
273 2098 series). The kernel will be slightly faster but will not work
274 on older machines.
Martin Schwidefskye37f50e2008-12-25 13:39:19 +0100275
Heiko Carstensf861e402010-10-25 16:10:17 +0200276config MARCH_Z196
Heiko Carstens3a81b172011-08-03 16:44:24 +0200277 bool "IBM zEnterprise 114 and 196"
Heiko Carstensf861e402010-10-25 16:10:17 +0200278 help
Heiko Carstens3a81b172011-08-03 16:44:24 +0200279 Select this to enable optimizations for IBM zEnterprise 114 and 196
280 (2818 and 2817 series). The kernel will be slightly faster but will
281 not work on older machines.
Heiko Carstensf861e402010-10-25 16:10:17 +0200282
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283endchoice
284
285config PACK_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100286 def_bool y
287 prompt "Pack kernel stack"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 help
289 This option enables the compiler option -mkernel-backchain if it
290 is available. If the option is available the compiler supports
291 the new stack layout which dramatically reduces the minimum stack
292 frame size. With an old compiler a non-leaf function needs a
293 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
294 -mkernel-backchain the minimum size drops to 16 byte on 31 bit
295 and 24 byte on 64 bit.
296
297 Say Y if you are unsure.
298
299config SMALL_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100300 def_bool n
301 prompt "Use 8kb for kernel stack instead of 16kb"
Heiko Carstens7f5a8ba2008-10-28 11:10:21 +0100302 depends on PACK_STACK && 64BIT && !LOCKDEP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 help
304 If you say Y here and the compiler supports the -mkernel-backchain
Heiko Carstens7f5a8ba2008-10-28 11:10:21 +0100305 option the kernel will use a smaller kernel stack size. The reduced
306 size is 8kb instead of 16kb. This allows to run more threads on a
307 system and reduces the pressure on the memory management for higher
308 order page allocations.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
310 Say N if you are unsure.
311
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312config CHECK_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100313 def_bool y
314 prompt "Detect kernel stack overflow"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 help
316 This option enables the compiler option -mstack-guard and
317 -mstack-size if they are available. If the compiler supports them
318 it will emit additional code to each function prolog to trigger
319 an illegal operation if the kernel stack is about to overflow.
320
321 Say N if you are unsure.
322
323config STACK_GUARD
324 int "Size of the guard area (128-1024)"
325 range 128 1024
326 depends on CHECK_STACK
327 default "256"
328 help
329 This allows you to specify the size of the guard area at the lower
330 end of the kernel stack. If the kernel stack points into the guard
331 area on function entry an illegal operation is triggered. The size
332 needs to be a power of 2. Please keep in mind that the size of an
333 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
334 The minimum size for the stack guard should be 256 for 31 bit and
335 512 for 64 bit.
336
Jan Glauber2c190da2011-03-15 17:08:19 +0100337config WARN_DYNAMIC_STACK
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100338 def_bool n
Jan Glauber2c190da2011-03-15 17:08:19 +0100339 prompt "Emit compiler warnings for function with dynamic stack usage"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 help
Jan Glauber2c190da2011-03-15 17:08:19 +0100341 This option enables the compiler option -mwarn-dynamicstack. If the
342 compiler supports this options generates warnings for functions
343 that dynamically allocate stack space using alloca.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
345 Say N if you are unsure.
346
Heiko Carstens39b742f2006-12-08 15:56:10 +0100347config ARCH_POPULATES_NODE_MAP
348 def_bool y
349
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200350comment "Kernel preemption"
351
352source "kernel/Kconfig.preempt"
353
Heiko Carstens17f34582008-04-30 13:38:47 +0200354config ARCH_SPARSEMEM_ENABLE
355 def_bool y
356 select SPARSEMEM_VMEMMAP_ENABLE
357 select SPARSEMEM_VMEMMAP
Heiko Carstens148f1672008-06-10 10:03:18 +0200358 select SPARSEMEM_STATIC if !64BIT
Heiko Carstens17f34582008-04-30 13:38:47 +0200359
360config ARCH_SPARSEMEM_DEFAULT
361 def_bool y
362
Hans-Joachim Picht97195d62008-05-30 10:03:24 +0200363config ARCH_SELECT_MEMORY_MODEL
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100364 def_bool y
Hans-Joachim Picht97195d62008-05-30 10:03:24 +0200365
Heiko Carstens421c1752008-07-14 09:59:18 +0200366config ARCH_ENABLE_MEMORY_HOTPLUG
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100367 def_bool y if SPARSEMEM
Heiko Carstens421c1752008-07-14 09:59:18 +0200368
Gerald Schaefer7e9238f2008-08-01 16:39:16 +0200369config ARCH_ENABLE_MEMORY_HOTREMOVE
370 def_bool y
371
Hans-Joachim Picht155af2f2009-06-16 10:30:52 +0200372config ARCH_HIBERNATION_POSSIBLE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100373 def_bool y if 64BIT
Hans-Joachim Picht155af2f2009-06-16 10:30:52 +0200374
Dave Hansen3f22ab22005-06-23 00:07:43 -0700375source "mm/Kconfig"
376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377comment "I/O subsystem configuration"
378
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379config QDIO
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100380 def_tristate y
381 prompt "QDIO support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 ---help---
Frank Pavlic8129ee12006-01-06 00:19:20 -0800383 This driver provides the Queued Direct I/O base support for
Ursula Braunefca13b2008-04-17 07:46:19 +0200384 IBM System z.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385
386 To compile this driver as a module, choose M here: the
387 module will be called qdio.
388
389 If unsure, say Y.
390
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200391config CHSC_SCH
Sebastian Ottd9c11b12011-01-31 11:30:09 +0100392 def_tristate m
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100393 prompt "Support for CHSC subchannels"
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200394 help
395 This driver allows usage of CHSC subchannels. A CHSC subchannel
396 is usually present on LPAR only.
397 The driver creates a device /dev/chsc, which may be used to
398 obtain I/O configuration information about the machine and
399 to issue asynchronous chsc commands (DANGEROUS).
400 You will usually only want to use this interface on a special
401 LPAR designated for system management.
402
403 To compile this driver as a module, choose M here: the
404 module will be called chsc_sch.
405
406 If unsure, say N.
407
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408comment "Misc"
409
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410config IPL
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100411 def_bool y
412 prompt "Builtin IPL record support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 help
414 If you want to use the produced kernel to IPL directly from a
415 device, you have to merge a bootsector specific to the device
416 into the first bytes of the kernel. You will have to select the
417 IPL device.
418
419choice
420 prompt "IPL method generated into head.S"
421 depends on IPL
Heiko Carstens46e79512008-10-28 11:10:20 +0100422 default IPL_VM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 help
424 Select "tape" if you want to IPL the image from a Tape.
425
426 Select "vm_reader" if you are running under VM/ESA and want
427 to IPL the image from the emulated card reader.
428
429config IPL_TAPE
430 bool "tape"
431
432config IPL_VM
433 bool "vm_reader"
434
435endchoice
436
437source "fs/Kconfig.binfmt"
438
Heiko Carstens684de392008-03-05 12:37:14 +0100439config FORCE_MAX_ZONEORDER
440 int
441 default "9"
442
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443config PFAULT
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100444 def_bool y
445 prompt "Pseudo page fault support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 help
447 Select this option, if you want to use PFAULT pseudo page fault
448 handling under VM. If running native or in LPAR, this option
449 has no effect. If your VM does not support PFAULT, PAGEEX
450 pseudo page fault handling will be used.
451 Note that VM 4.2 supports PFAULT but has a bug in its
452 implementation that causes some problems.
453 Everybody who wants to run Linux under VM != VM4.2 should select
454 this option.
455
456config SHARED_KERNEL
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100457 def_bool y
458 prompt "VM shared kernel support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 help
460 Select this option, if you want to share the text segment of the
461 Linux kernel between different VM guests. This reduces memory
462 usage with lots of guests but greatly increases kernel size.
Heiko Carstens9c9c1762007-03-05 23:35:45 +0100463 Also if a kernel was IPL'ed from a shared segment the kexec system
464 call will not work.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 You should only select this option if you know what you are
466 doing and want to exploit this feature.
467
468config CMM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100469 def_tristate n
470 prompt "Cooperative memory management"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 help
472 Select this option, if you want to enable the kernel interface
473 to reduce the memory size of the system. This is accomplished
474 by allocating pages of memory and put them "on hold". This only
475 makes sense for a system running under VM where the unused pages
476 will be reused by VM for other guest systems. The interface
477 allows an external monitor to balance memory of many systems.
478 Everybody who wants to run Linux under VM should select this
479 option.
480
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481config CMM_IUCV
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100482 def_bool y
483 prompt "IUCV special message interface to cooperative memory management"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
485 help
486 Select this option to enable the special message interface to
487 the cooperative memory management.
488
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489config APPLDATA_BASE
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100490 def_bool n
491 prompt "Linux - VM Monitor Stream, base infrastructure"
Martin Schwidefskyc185b782008-12-25 13:39:25 +0100492 depends on PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 help
494 This provides a kernel interface for creating and updating z/VM APPLDATA
495 monitor records. The monitor records are updated at certain time
496 intervals, once the timer is started.
497 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
498 i.e. enables or disables monitoring on the Linux side.
499 A custom interval value (in seconds) can be written to
500 /proc/appldata/interval.
501
502 Defaults are 60 seconds interval and timer off.
503 The /proc entries can also be read from, showing the current settings.
504
505config APPLDATA_MEM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100506 def_tristate m
507 prompt "Monitor memory management statistics"
Al Viro62fb2ba2006-12-13 00:34:59 -0800508 depends on APPLDATA_BASE && VM_EVENT_COUNTERS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 help
510 This provides memory management related data to the Linux - VM Monitor
511 Stream, like paging/swapping rate, memory utilisation, etc.
512 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
513 APPLDATA monitor record, i.e. enables or disables monitoring this record
514 on the z/VM side.
515
516 Default is disabled.
517 The /proc entry can also be read from, showing the current settings.
518
519 This can also be compiled as a module, which will be called
520 appldata_mem.o.
521
522config APPLDATA_OS
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100523 def_tristate m
524 prompt "Monitor OS statistics"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 depends on APPLDATA_BASE
526 help
527 This provides OS related data to the Linux - VM Monitor Stream, like
528 CPU utilisation, etc.
529 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
530 APPLDATA monitor record, i.e. enables or disables monitoring this record
531 on the z/VM side.
532
533 Default is disabled.
534 This can also be compiled as a module, which will be called
535 appldata_os.o.
536
537config APPLDATA_NET_SUM
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100538 def_tristate m
539 prompt "Monitor overall network statistics"
Sachin Sant70193af2009-03-26 15:24:00 +0100540 depends on APPLDATA_BASE && NET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 help
542 This provides network related data to the Linux - VM Monitor Stream,
543 currently there is only a total sum of network I/O statistics, no
544 per-interface data.
545 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
546 APPLDATA monitor record, i.e. enables or disables monitoring this record
547 on the z/VM side.
548
549 Default is disabled.
550 This can also be compiled as a module, which will be called
551 appldata_net_sum.o.
552
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200553source kernel/Kconfig.hz
554
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700555config S390_HYPFS_FS
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100556 def_bool y
557 prompt "s390 hypervisor file system support"
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700558 select SYS_HYPERVISOR
Michael Holzheu24bbb1f2006-06-23 02:05:06 -0700559 help
560 This is a virtual file system intended to provide accounting
561 information in an s390 hypervisor environment.
562
Heiko Carstenscf13f0e2005-06-25 14:58:11 -0700563config KEXEC
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100564 def_bool n
565 prompt "kexec system call"
Heiko Carstenscf13f0e2005-06-25 14:58:11 -0700566 help
567 kexec is a system call that implements the ability to shutdown your
568 current kernel, and to start another kernel. It is like a reboot
569 but is independent of hardware/microcode support.
570
Michael Holzheu411ed322007-04-27 16:01:49 +0200571config ZFCPDUMP
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100572 def_bool n
573 prompt "zfcpdump support"
Michael Holzheu411ed322007-04-27 16:01:49 +0200574 select SMP
Michael Holzheu411ed322007-04-27 16:01:49 +0200575 help
576 Select this option if you want to build an zfcpdump enabled kernel.
Dirk Hohndele4031492007-10-30 13:37:19 -0700577 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
Michael Holzheu411ed322007-04-27 16:01:49 +0200578
Carsten Ottefa587742008-03-25 18:47:44 +0100579config S390_GUEST
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100580 def_bool y
581 prompt "s390 guest support for KVM (EXPERIMENTAL)"
Carsten Ottefa587742008-03-25 18:47:44 +0100582 depends on 64BIT && EXPERIMENTAL
Christian Borntraeger80629b02011-06-22 16:24:07 +0200583 select VIRTUALIZATION
Carsten Ottefa587742008-03-25 18:47:44 +0100584 select VIRTIO
585 select VIRTIO_RING
Christian Borntraegerfaeba8302008-06-20 15:24:18 +0200586 select VIRTIO_CONSOLE
Carsten Ottefa587742008-03-25 18:47:44 +0100587 help
Christian Borntraeger20766c02008-08-29 13:30:56 +0200588 Select this option if you want to run the kernel as a guest under
589 the KVM hypervisor. This will add detection for KVM as well as a
590 virtio transport. If KVM is detected, the virtio console will be
591 the default console.
Heiko Carstensbcf5cef2009-06-12 10:26:26 +0200592
593config SECCOMP
Martin Schwidefsky6f9a3c32011-01-05 12:47:15 +0100594 def_bool y
595 prompt "Enable seccomp to safely compute untrusted bytecode"
Heiko Carstensbcf5cef2009-06-12 10:26:26 +0200596 depends on PROC_FS
Heiko Carstensbcf5cef2009-06-12 10:26:26 +0200597 help
598 This kernel feature is useful for number crunching applications
599 that may need to compute untrusted bytecode during their
600 execution. By using pipes or other transports made available to
601 the process as file descriptors supporting the read/write
602 syscalls, it's possible to isolate those applications in
603 their own address space using seccomp. Once seccomp is
604 enabled via /proc/<pid>/seccomp, it cannot be disabled
605 and the task is only allowed to execute a few safe syscalls
606 defined by each seccomp mode.
607
608 If unsure, say Y.
609
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610endmenu
611
Hans-Joachim Picht155af2f2009-06-16 10:30:52 +0200612menu "Power Management"
613
614source "kernel/power/Kconfig"
615
616endmenu
617
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700618source "net/Kconfig"
619
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620config PCMCIA
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200621 def_bool n
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200623config CCW
624 def_bool y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
Martin Schwidefsky61d48c22007-05-10 15:46:00 +0200626source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627
628source "fs/Kconfig"
629
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630source "arch/s390/Kconfig.debug"
631
632source "security/Kconfig"
633
634source "crypto/Kconfig"
635
636source "lib/Kconfig"
Christian Borntraeger77b455f2008-03-25 18:47:36 +0100637
638source "arch/s390/kvm/Kconfig"