| 1 | config MMU |
| 2 | def_bool y |
| 3 | |
| 4 | config ZONE_DMA |
| 5 | def_bool y |
| 6 | |
| 7 | config LOCKDEP_SUPPORT |
| 8 | def_bool y |
| 9 | |
| 10 | config STACKTRACE_SUPPORT |
| 11 | def_bool y |
| 12 | |
| 13 | config HAVE_LATENCYTOP_SUPPORT |
| 14 | def_bool y |
| 15 | |
| 16 | config RWSEM_GENERIC_SPINLOCK |
| 17 | bool |
| 18 | |
| 19 | config RWSEM_XCHGADD_ALGORITHM |
| 20 | def_bool y |
| 21 | |
| 22 | config ARCH_HAS_ILOG2_U32 |
| 23 | def_bool n |
| 24 | |
| 25 | config ARCH_HAS_ILOG2_U64 |
| 26 | def_bool n |
| 27 | |
| 28 | config GENERIC_HWEIGHT |
| 29 | def_bool y |
| 30 | |
| 31 | config GENERIC_TIME_VSYSCALL |
| 32 | def_bool y |
| 33 | |
| 34 | config GENERIC_CLOCKEVENTS |
| 35 | def_bool y |
| 36 | |
| 37 | config GENERIC_BUG |
| 38 | def_bool y if BUG |
| 39 | |
| 40 | config GENERIC_BUG_RELATIVE_POINTERS |
| 41 | def_bool y |
| 42 | |
| 43 | config NO_IOMEM |
| 44 | def_bool y |
| 45 | |
| 46 | config NO_DMA |
| 47 | def_bool y |
| 48 | |
| 49 | config ARCH_DMA_ADDR_T_64BIT |
| 50 | def_bool 64BIT |
| 51 | |
| 52 | config GENERIC_LOCKBREAK |
| 53 | def_bool y if SMP && PREEMPT |
| 54 | |
| 55 | config PGSTE |
| 56 | def_bool y if KVM |
| 57 | |
| 58 | config VIRT_CPU_ACCOUNTING |
| 59 | def_bool y |
| 60 | |
| 61 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
| 62 | def_bool y |
| 63 | |
| 64 | config S390 |
| 65 | def_bool y |
| 66 | select USE_GENERIC_SMP_HELPERS if SMP |
| 67 | select HAVE_SYSCALL_WRAPPERS |
| 68 | select HAVE_FUNCTION_TRACER |
| 69 | select HAVE_FUNCTION_TRACE_MCOUNT_TEST |
| 70 | select HAVE_FTRACE_MCOUNT_RECORD |
| 71 | select HAVE_C_RECORDMCOUNT |
| 72 | select HAVE_SYSCALL_TRACEPOINTS |
| 73 | select HAVE_DYNAMIC_FTRACE |
| 74 | select HAVE_FUNCTION_GRAPH_TRACER |
| 75 | select HAVE_REGS_AND_STACK_ACCESS_API |
| 76 | select HAVE_OPROFILE |
| 77 | select HAVE_KPROBES |
| 78 | select HAVE_KRETPROBES |
| 79 | select HAVE_KVM if 64BIT |
| 80 | select HAVE_ARCH_TRACEHOOK |
| 81 | select INIT_ALL_POSSIBLE |
| 82 | select HAVE_IRQ_WORK |
| 83 | select HAVE_PERF_EVENTS |
| 84 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
| 85 | select HAVE_KERNEL_GZIP |
| 86 | select HAVE_KERNEL_BZIP2 |
| 87 | select HAVE_KERNEL_LZMA |
| 88 | select HAVE_KERNEL_LZO |
| 89 | select HAVE_KERNEL_XZ |
| 90 | select HAVE_GET_USER_PAGES_FAST |
| 91 | select HAVE_ARCH_MUTEX_CPU_RELAX |
| 92 | select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 |
| 93 | select HAVE_RCU_TABLE_FREE if SMP |
| 94 | 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 |
| 122 | |
| 123 | config SCHED_OMIT_FRAME_POINTER |
| 124 | def_bool y |
| 125 | |
| 126 | source "init/Kconfig" |
| 127 | |
| 128 | source "kernel/Kconfig.freezer" |
| 129 | |
| 130 | menu "Base setup" |
| 131 | |
| 132 | comment "Processor type and features" |
| 133 | |
| 134 | source "kernel/time/Kconfig" |
| 135 | |
| 136 | config 64BIT |
| 137 | def_bool y |
| 138 | prompt "64 bit kernel" |
| 139 | help |
| 140 | Select this option if you have an IBM z/Architecture machine |
| 141 | and want to use the 64 bit addressing mode. |
| 142 | |
| 143 | config 32BIT |
| 144 | def_bool y if !64BIT |
| 145 | |
| 146 | config KTIME_SCALAR |
| 147 | def_bool 32BIT |
| 148 | |
| 149 | config SMP |
| 150 | def_bool y |
| 151 | prompt "Symmetric multi-processing support" |
| 152 | ---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 | |
| 163 | See also the SMP-HOWTO available at |
| 164 | <http://www.tldp.org/docs.html#howto>. |
| 165 | |
| 166 | Even if you don't know what to do here, say Y. |
| 167 | |
| 168 | config NR_CPUS |
| 169 | int "Maximum number of CPUs (2-64)" |
| 170 | range 2 64 |
| 171 | depends on SMP |
| 172 | default "32" if !64BIT |
| 173 | default "64" if 64BIT |
| 174 | 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 | |
| 182 | config HOTPLUG_CPU |
| 183 | def_bool y |
| 184 | prompt "Support for hot-pluggable CPUs" |
| 185 | depends on SMP |
| 186 | select HOTPLUG |
| 187 | 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 | |
| 192 | config 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 | |
| 201 | config SCHED_BOOK |
| 202 | def_bool y |
| 203 | prompt "Book scheduler support" |
| 204 | depends on SMP && SCHED_MC |
| 205 | help |
| 206 | Book scheduler support improves the CPU scheduler's decision making |
| 207 | when dealing with machines that have several books. |
| 208 | |
| 209 | config MATHEMU |
| 210 | def_bool y |
| 211 | prompt "IEEE FPU emulation" |
| 212 | depends on MARCH_G5 |
| 213 | help |
| 214 | This option is required for IEEE compliant floating point arithmetic |
| 215 | on older ESA/390 machines. Say Y unless you know your machine doesn't |
| 216 | need this. |
| 217 | |
| 218 | config COMPAT |
| 219 | def_bool y |
| 220 | prompt "Kernel support for 31 bit emulation" |
| 221 | depends on 64BIT |
| 222 | select COMPAT_BINFMT_ELF |
| 223 | 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 | |
| 229 | config SYSVIPC_COMPAT |
| 230 | def_bool y if COMPAT && SYSVIPC |
| 231 | |
| 232 | config AUDIT_ARCH |
| 233 | def_bool y |
| 234 | |
| 235 | comment "Code generation options" |
| 236 | |
| 237 | choice |
| 238 | prompt "Processor type" |
| 239 | default MARCH_G5 |
| 240 | |
| 241 | config MARCH_G5 |
| 242 | bool "System/390 model G5 and G6" |
| 243 | depends on !64BIT |
| 244 | help |
| 245 | Select this to build a 31 bit kernel that works |
| 246 | on all ESA/390 and z/Architecture machines. |
| 247 | |
| 248 | config MARCH_Z900 |
| 249 | bool "IBM zSeries model z800 and z900" |
| 250 | help |
| 251 | 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. |
| 254 | |
| 255 | config MARCH_Z990 |
| 256 | bool "IBM zSeries model z890 and z990" |
| 257 | help |
| 258 | 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. |
| 261 | |
| 262 | config MARCH_Z9_109 |
| 263 | bool "IBM System z9" |
| 264 | help |
| 265 | 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. |
| 268 | |
| 269 | config MARCH_Z10 |
| 270 | bool "IBM System z10" |
| 271 | help |
| 272 | 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. |
| 275 | |
| 276 | config MARCH_Z196 |
| 277 | bool "IBM zEnterprise 114 and 196" |
| 278 | help |
| 279 | 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. |
| 282 | |
| 283 | endchoice |
| 284 | |
| 285 | config PACK_STACK |
| 286 | def_bool y |
| 287 | prompt "Pack kernel stack" |
| 288 | 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 | |
| 299 | config SMALL_STACK |
| 300 | def_bool n |
| 301 | prompt "Use 8kb for kernel stack instead of 16kb" |
| 302 | depends on PACK_STACK && 64BIT && !LOCKDEP |
| 303 | help |
| 304 | If you say Y here and the compiler supports the -mkernel-backchain |
| 305 | 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. |
| 309 | |
| 310 | Say N if you are unsure. |
| 311 | |
| 312 | config CHECK_STACK |
| 313 | def_bool y |
| 314 | prompt "Detect kernel stack overflow" |
| 315 | 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 | |
| 323 | config 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 | |
| 337 | config WARN_DYNAMIC_STACK |
| 338 | def_bool n |
| 339 | prompt "Emit compiler warnings for function with dynamic stack usage" |
| 340 | help |
| 341 | 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. |
| 344 | |
| 345 | Say N if you are unsure. |
| 346 | |
| 347 | config ARCH_POPULATES_NODE_MAP |
| 348 | def_bool y |
| 349 | |
| 350 | comment "Kernel preemption" |
| 351 | |
| 352 | source "kernel/Kconfig.preempt" |
| 353 | |
| 354 | config ARCH_SPARSEMEM_ENABLE |
| 355 | def_bool y |
| 356 | select SPARSEMEM_VMEMMAP_ENABLE |
| 357 | select SPARSEMEM_VMEMMAP |
| 358 | select SPARSEMEM_STATIC if !64BIT |
| 359 | |
| 360 | config ARCH_SPARSEMEM_DEFAULT |
| 361 | def_bool y |
| 362 | |
| 363 | config ARCH_SELECT_MEMORY_MODEL |
| 364 | def_bool y |
| 365 | |
| 366 | config ARCH_ENABLE_MEMORY_HOTPLUG |
| 367 | def_bool y if SPARSEMEM |
| 368 | |
| 369 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
| 370 | def_bool y |
| 371 | |
| 372 | config ARCH_HIBERNATION_POSSIBLE |
| 373 | def_bool y if 64BIT |
| 374 | |
| 375 | source "mm/Kconfig" |
| 376 | |
| 377 | comment "I/O subsystem configuration" |
| 378 | |
| 379 | config QDIO |
| 380 | def_tristate y |
| 381 | prompt "QDIO support" |
| 382 | ---help--- |
| 383 | This driver provides the Queued Direct I/O base support for |
| 384 | IBM System z. |
| 385 | |
| 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 | |
| 391 | config CHSC_SCH |
| 392 | def_tristate m |
| 393 | prompt "Support for CHSC subchannels" |
| 394 | 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 | |
| 408 | comment "Misc" |
| 409 | |
| 410 | config IPL |
| 411 | def_bool y |
| 412 | prompt "Builtin IPL record support" |
| 413 | 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 | |
| 419 | choice |
| 420 | prompt "IPL method generated into head.S" |
| 421 | depends on IPL |
| 422 | default IPL_VM |
| 423 | 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 | |
| 429 | config IPL_TAPE |
| 430 | bool "tape" |
| 431 | |
| 432 | config IPL_VM |
| 433 | bool "vm_reader" |
| 434 | |
| 435 | endchoice |
| 436 | |
| 437 | source "fs/Kconfig.binfmt" |
| 438 | |
| 439 | config FORCE_MAX_ZONEORDER |
| 440 | int |
| 441 | default "9" |
| 442 | |
| 443 | config PFAULT |
| 444 | def_bool y |
| 445 | prompt "Pseudo page fault support" |
| 446 | 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 | |
| 456 | config SHARED_KERNEL |
| 457 | def_bool y |
| 458 | prompt "VM shared kernel support" |
| 459 | 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. |
| 463 | Also if a kernel was IPL'ed from a shared segment the kexec system |
| 464 | call will not work. |
| 465 | You should only select this option if you know what you are |
| 466 | doing and want to exploit this feature. |
| 467 | |
| 468 | config CMM |
| 469 | def_tristate n |
| 470 | prompt "Cooperative memory management" |
| 471 | 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 | |
| 481 | config CMM_IUCV |
| 482 | def_bool y |
| 483 | prompt "IUCV special message interface to cooperative memory management" |
| 484 | 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 | |
| 489 | config APPLDATA_BASE |
| 490 | def_bool n |
| 491 | prompt "Linux - VM Monitor Stream, base infrastructure" |
| 492 | depends on PROC_FS |
| 493 | 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 | |
| 505 | config APPLDATA_MEM |
| 506 | def_tristate m |
| 507 | prompt "Monitor memory management statistics" |
| 508 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
| 509 | 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 | |
| 522 | config APPLDATA_OS |
| 523 | def_tristate m |
| 524 | prompt "Monitor OS statistics" |
| 525 | 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 | |
| 537 | config APPLDATA_NET_SUM |
| 538 | def_tristate m |
| 539 | prompt "Monitor overall network statistics" |
| 540 | depends on APPLDATA_BASE && NET |
| 541 | 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 | |
| 553 | source kernel/Kconfig.hz |
| 554 | |
| 555 | config S390_HYPFS_FS |
| 556 | def_bool y |
| 557 | prompt "s390 hypervisor file system support" |
| 558 | select SYS_HYPERVISOR |
| 559 | help |
| 560 | This is a virtual file system intended to provide accounting |
| 561 | information in an s390 hypervisor environment. |
| 562 | |
| 563 | config KEXEC |
| 564 | def_bool n |
| 565 | prompt "kexec system call" |
| 566 | 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 | |
| 571 | config ZFCPDUMP |
| 572 | def_bool n |
| 573 | prompt "zfcpdump support" |
| 574 | select SMP |
| 575 | help |
| 576 | Select this option if you want to build an zfcpdump enabled kernel. |
| 577 | Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. |
| 578 | |
| 579 | config S390_GUEST |
| 580 | def_bool y |
| 581 | prompt "s390 guest support for KVM (EXPERIMENTAL)" |
| 582 | depends on 64BIT && EXPERIMENTAL |
| 583 | select VIRTUALIZATION |
| 584 | select VIRTIO |
| 585 | select VIRTIO_RING |
| 586 | select VIRTIO_CONSOLE |
| 587 | help |
| 588 | 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. |
| 592 | |
| 593 | config SECCOMP |
| 594 | def_bool y |
| 595 | prompt "Enable seccomp to safely compute untrusted bytecode" |
| 596 | depends on PROC_FS |
| 597 | 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 | |
| 610 | endmenu |
| 611 | |
| 612 | menu "Power Management" |
| 613 | |
| 614 | source "kernel/power/Kconfig" |
| 615 | |
| 616 | endmenu |
| 617 | |
| 618 | source "net/Kconfig" |
| 619 | |
| 620 | config PCMCIA |
| 621 | def_bool n |
| 622 | |
| 623 | config CCW |
| 624 | def_bool y |
| 625 | |
| 626 | source "drivers/Kconfig" |
| 627 | |
| 628 | source "fs/Kconfig" |
| 629 | |
| 630 | source "arch/s390/Kconfig.debug" |
| 631 | |
| 632 | source "security/Kconfig" |
| 633 | |
| 634 | source "crypto/Kconfig" |
| 635 | |
| 636 | source "lib/Kconfig" |
| 637 | |
| 638 | source "arch/s390/kvm/Kconfig" |