arch/s390/Kconfig

   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_BUG
  32         def_bool y if BUG
  33
  34 config GENERIC_BUG_RELATIVE_POINTERS
  35         def_bool y
  36
  37 config ARCH_DMA_ADDR_T_64BIT
  38         def_bool 64BIT
  39
  40 config GENERIC_LOCKBREAK
  41         def_bool y if SMP && PREEMPT
  42
  43 config PGSTE
  44         def_bool y if KVM
  45
  46 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  47         def_bool y
  48
  49 config KEXEC
  50         def_bool y
  51
  52 config AUDIT_ARCH
  53         def_bool y
  54
  55 config NO_IOPORT
  56         def_bool y
  57
  58 config PCI_QUIRKS
  59         def_bool n
  60
  61 config S390
  62         def_bool y
  63         select ARCH_DISCARD_MEMBLOCK
  64         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  65         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  66         select ARCH_INLINE_READ_LOCK
  67         select ARCH_INLINE_READ_LOCK_BH
  68         select ARCH_INLINE_READ_LOCK_IRQ
  69         select ARCH_INLINE_READ_LOCK_IRQSAVE
  70         select ARCH_INLINE_READ_TRYLOCK
  71         select ARCH_INLINE_READ_UNLOCK
  72         select ARCH_INLINE_READ_UNLOCK_BH
  73         select ARCH_INLINE_READ_UNLOCK_IRQ
  74         select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
  75         select ARCH_INLINE_SPIN_LOCK
  76         select ARCH_INLINE_SPIN_LOCK_BH
  77         select ARCH_INLINE_SPIN_LOCK_IRQ
  78         select ARCH_INLINE_SPIN_LOCK_IRQSAVE
  79         select ARCH_INLINE_SPIN_TRYLOCK
  80         select ARCH_INLINE_SPIN_TRYLOCK_BH
  81         select ARCH_INLINE_SPIN_UNLOCK
  82         select ARCH_INLINE_SPIN_UNLOCK_BH
  83         select ARCH_INLINE_SPIN_UNLOCK_IRQ
  84         select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
  85         select ARCH_INLINE_WRITE_LOCK
  86         select ARCH_INLINE_WRITE_LOCK_BH
  87         select ARCH_INLINE_WRITE_LOCK_IRQ
  88         select ARCH_INLINE_WRITE_LOCK_IRQSAVE
  89         select ARCH_INLINE_WRITE_TRYLOCK
  90         select ARCH_INLINE_WRITE_UNLOCK
  91         select ARCH_INLINE_WRITE_UNLOCK_BH
  92         select ARCH_INLINE_WRITE_UNLOCK_IRQ
  93         select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
  94         select ARCH_SAVE_PAGE_KEYS if HIBERNATION
  95         select ARCH_WANT_IPC_PARSE_VERSION
  96         select BUILDTIME_EXTABLE_SORT
  97         select CLONE_BACKWARDS2
  98         select GENERIC_CLOCKEVENTS
  99         select GENERIC_CPU_DEVICES if !SMP
 100         select GENERIC_KERNEL_THREAD
 101         select GENERIC_SMP_IDLE_THREAD
 102         select GENERIC_TIME_VSYSCALL_OLD
 103         select HAVE_ALIGNED_STRUCT_PAGE if SLUB
 104         select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
 105         select HAVE_ARCH_MUTEX_CPU_RELAX
 106         select HAVE_ARCH_SECCOMP_FILTER
 107         select HAVE_ARCH_TRACEHOOK
 108         select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
 109         select HAVE_BPF_JIT if 64BIT && PACK_STACK
 110         select HAVE_CMPXCHG_DOUBLE
 111         select HAVE_CMPXCHG_LOCAL
 112         select HAVE_C_RECORDMCOUNT
 113         select HAVE_DEBUG_KMEMLEAK
 114         select HAVE_DYNAMIC_FTRACE
 115         select HAVE_FTRACE_MCOUNT_RECORD
 116         select HAVE_FUNCTION_GRAPH_TRACER
 117         select HAVE_FUNCTION_TRACER
 118         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
 119         select HAVE_KERNEL_BZIP2
 120         select HAVE_KERNEL_GZIP
 121         select HAVE_KERNEL_LZMA
 122         select HAVE_KERNEL_LZO
 123         select HAVE_KERNEL_XZ
 124         select HAVE_KPROBES
 125         select HAVE_KRETPROBES
 126         select HAVE_KVM if 64BIT
 127         select HAVE_MEMBLOCK
 128         select HAVE_MEMBLOCK_NODE_MAP
 129         select HAVE_MOD_ARCH_SPECIFIC
 130         select HAVE_OPROFILE
 131         select HAVE_PERF_EVENTS
 132         select HAVE_REGS_AND_STACK_ACCESS_API
 133         select HAVE_SYSCALL_TRACEPOINTS
 134         select HAVE_SYSCALL_WRAPPERS
 135         select HAVE_UID16 if 32BIT
 136         select HAVE_VIRT_CPU_ACCOUNTING
 137         select VIRT_TO_BUS
 138         select INIT_ALL_POSSIBLE
 139         select KTIME_SCALAR if 32BIT
 140         select MODULES_USE_ELF_RELA
 141         select OLD_SIGSUSPEND3
 142         select OLD_SIGACTION
 143         select SYSCTL_EXCEPTION_TRACE
 144         select USE_GENERIC_SMP_HELPERS if SMP
 145         select VIRT_CPU_ACCOUNTING
 146
 147 config SCHED_OMIT_FRAME_POINTER
 148         def_bool y
 149
 150 source "init/Kconfig"
 151
 152 source "kernel/Kconfig.freezer"
 153
 154 menu "Processor type and features"
 155
 156 config HAVE_MARCH_Z900_FEATURES
 157         def_bool n
 158
 159 config HAVE_MARCH_Z990_FEATURES
 160         def_bool n
 161         select HAVE_MARCH_Z900_FEATURES
 162
 163 config HAVE_MARCH_Z9_109_FEATURES
 164         def_bool n
 165         select HAVE_MARCH_Z990_FEATURES
 166
 167 config HAVE_MARCH_Z10_FEATURES
 168         def_bool n
 169         select HAVE_MARCH_Z9_109_FEATURES
 170
 171 config HAVE_MARCH_Z196_FEATURES
 172         def_bool n
 173         select HAVE_MARCH_Z10_FEATURES
 174
 175 config HAVE_MARCH_ZEC12_FEATURES
 176         def_bool n
 177         select HAVE_MARCH_Z196_FEATURES
 178
 179 choice
 180         prompt "Processor type"
 181         default MARCH_G5
 182
 183 config MARCH_G5
 184         bool "System/390 model G5 and G6"
 185         depends on !64BIT
 186         help
 187           Select this to build a 31 bit kernel that works
 188           on all ESA/390 and z/Architecture machines.
 189
 190 config MARCH_Z900
 191         bool "IBM zSeries model z800 and z900"
 192         select HAVE_MARCH_Z900_FEATURES if 64BIT
 193         help
 194           Select this to enable optimizations for model z800/z900 (2064 and
 195           2066 series). This will enable some optimizations that are not
 196           available on older ESA/390 (31 Bit) only CPUs.
 197
 198 config MARCH_Z990
 199         bool "IBM zSeries model z890 and z990"
 200         select HAVE_MARCH_Z990_FEATURES if 64BIT
 201         help
 202           Select this to enable optimizations for model z890/z990 (2084 and
 203           2086 series). The kernel will be slightly faster but will not work
 204           on older machines.
 205
 206 config MARCH_Z9_109
 207         bool "IBM System z9"
 208         select HAVE_MARCH_Z9_109_FEATURES if 64BIT
 209         help
 210           Select this to enable optimizations for IBM System z9 (2094 and
 211           2096 series). The kernel will be slightly faster but will not work
 212           on older machines.
 213
 214 config MARCH_Z10
 215         bool "IBM System z10"
 216         select HAVE_MARCH_Z10_FEATURES if 64BIT
 217         help
 218           Select this to enable optimizations for IBM System z10 (2097 and
 219           2098 series). The kernel will be slightly faster but will not work
 220           on older machines.
 221
 222 config MARCH_Z196
 223         bool "IBM zEnterprise 114 and 196"
 224         select HAVE_MARCH_Z196_FEATURES if 64BIT
 225         help
 226           Select this to enable optimizations for IBM zEnterprise 114 and 196
 227           (2818 and 2817 series). The kernel will be slightly faster but will
 228           not work on older machines.
 229
 230 config MARCH_ZEC12
 231         bool "IBM zEC12"
 232         select HAVE_MARCH_ZEC12_FEATURES if 64BIT
 233         help
 234           Select this to enable optimizations for IBM zEC12 (2827 series). The
 235           kernel will be slightly faster but will not work on older machines.
 236
 237 endchoice
 238
 239 config 64BIT
 240         def_bool y
 241         prompt "64 bit kernel"
 242         help
 243           Select this option if you have an IBM z/Architecture machine
 244           and want to use the 64 bit addressing mode.
 245
 246 config 32BIT
 247         def_bool y if !64BIT
 248
 249 config COMPAT
 250         def_bool y
 251         prompt "Kernel support for 31 bit emulation"
 252         depends on 64BIT
 253         select COMPAT_BINFMT_ELF if BINFMT_ELF
 254         select ARCH_WANT_OLD_COMPAT_IPC
 255         select COMPAT_OLD_SIGACTION
 256         help
 257           Select this option if you want to enable your system kernel to
 258           handle system-calls from ELF binaries for 31 bit ESA.  This option
 259           (and some other stuff like libraries and such) is needed for
 260           executing 31 bit applications.  It is safe to say "Y".
 261
 262 config SYSVIPC_COMPAT
 263         def_bool y if COMPAT && SYSVIPC
 264
 265 config KEYS_COMPAT
 266         def_bool y if COMPAT && KEYS
 267
 268 config SMP
 269         def_bool y
 270         prompt "Symmetric multi-processing support"
 271         ---help---
 272           This enables support for systems with more than one CPU. If you have
 273           a system with only one CPU, like most personal computers, say N. If
 274           you have a system with more than one CPU, say Y.
 275
 276           If you say N here, the kernel will run on single and multiprocessor
 277           machines, but will use only one CPU of a multiprocessor machine. If
 278           you say Y here, the kernel will run on many, but not all,
 279           singleprocessor machines. On a singleprocessor machine, the kernel
 280           will run faster if you say N here.
 281
 282           See also the SMP-HOWTO available at
 283           <http://www.tldp.org/docs.html#howto>.
 284
 285           Even if you don't know what to do here, say Y.
 286
 287 config NR_CPUS
 288         int "Maximum number of CPUs (2-64)"
 289         range 2 64
 290         depends on SMP
 291         default "32" if !64BIT
 292         default "64" if 64BIT
 293         help
 294           This allows you to specify the maximum number of CPUs which this
 295           kernel will support.  The maximum supported value is 64 and the
 296           minimum value which makes sense is 2.
 297
 298           This is purely to save memory - each supported CPU adds
 299           approximately sixteen kilobytes to the kernel image.
 300
 301 config HOTPLUG_CPU
 302         def_bool y
 303         prompt "Support for hot-pluggable CPUs"
 304         depends on SMP
 305         select HOTPLUG
 306         help
 307           Say Y here to be able to turn CPUs off and on. CPUs
 308           can be controlled through /sys/devices/system/cpu/cpu#.
 309           Say N if you want to disable CPU hotplug.
 310
 311 config SCHED_MC
 312         def_bool n
 313
 314 config SCHED_BOOK
 315         def_bool y
 316         prompt "Book scheduler support"
 317         depends on SMP
 318         select SCHED_MC
 319         help
 320           Book scheduler support improves the CPU scheduler's decision making
 321           when dealing with machines that have several books.
 322
 323 source kernel/Kconfig.preempt
 324
 325 config MATHEMU
 326         def_bool y
 327         prompt "IEEE FPU emulation"
 328         depends on MARCH_G5
 329         help
 330           This option is required for IEEE compliant floating point arithmetic
 331           on older ESA/390 machines. Say Y unless you know your machine doesn't
 332           need this.
 333
 334 source kernel/Kconfig.hz
 335
 336 endmenu
 337
 338 menu "Memory setup"
 339
 340 config ARCH_SPARSEMEM_ENABLE
 341         def_bool y
 342         select SPARSEMEM_VMEMMAP_ENABLE
 343         select SPARSEMEM_VMEMMAP
 344         select SPARSEMEM_STATIC if !64BIT
 345
 346 config ARCH_SPARSEMEM_DEFAULT
 347         def_bool y
 348
 349 config ARCH_SELECT_MEMORY_MODEL
 350         def_bool y
 351
 352 config ARCH_ENABLE_MEMORY_HOTPLUG
 353         def_bool y if SPARSEMEM
 354
 355 config ARCH_ENABLE_MEMORY_HOTREMOVE
 356         def_bool y
 357
 358 config FORCE_MAX_ZONEORDER
 359         int
 360         default "9"
 361
 362 source "mm/Kconfig"
 363
 364 config PACK_STACK
 365         def_bool y
 366         prompt "Pack kernel stack"
 367         help
 368           This option enables the compiler option -mkernel-backchain if it
 369           is available. If the option is available the compiler supports
 370           the new stack layout which dramatically reduces the minimum stack
 371           frame size. With an old compiler a non-leaf function needs a
 372           minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
 373           -mkernel-backchain the minimum size drops to 16 byte on 31 bit
 374           and 24 byte on 64 bit.
 375
 376           Say Y if you are unsure.
 377
 378 config SMALL_STACK
 379         def_bool n
 380         prompt "Use 8kb for kernel stack instead of 16kb"
 381         depends on PACK_STACK && 64BIT && !LOCKDEP
 382         help
 383           If you say Y here and the compiler supports the -mkernel-backchain
 384           option the kernel will use a smaller kernel stack size. The reduced
 385           size is 8kb instead of 16kb. This allows to run more threads on a
 386           system and reduces the pressure on the memory management for higher
 387           order page allocations.
 388
 389           Say N if you are unsure.
 390
 391 config CHECK_STACK
 392         def_bool y
 393         prompt "Detect kernel stack overflow"
 394         help
 395           This option enables the compiler option -mstack-guard and
 396           -mstack-size if they are available. If the compiler supports them
 397           it will emit additional code to each function prolog to trigger
 398           an illegal operation if the kernel stack is about to overflow.
 399
 400           Say N if you are unsure.
 401
 402 config STACK_GUARD
 403         int "Size of the guard area (128-1024)"
 404         range 128 1024
 405         depends on CHECK_STACK
 406         default "256"
 407         help
 408           This allows you to specify the size of the guard area at the lower
 409           end of the kernel stack. If the kernel stack points into the guard
 410           area on function entry an illegal operation is triggered. The size
 411           needs to be a power of 2. Please keep in mind that the size of an
 412           interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
 413           The minimum size for the stack guard should be 256 for 31 bit and
 414           512 for 64 bit.
 415
 416 config WARN_DYNAMIC_STACK
 417         def_bool n
 418         prompt "Emit compiler warnings for function with dynamic stack usage"
 419         help
 420           This option enables the compiler option -mwarn-dynamicstack. If the
 421           compiler supports this options generates warnings for functions
 422           that dynamically allocate stack space using alloca.
 423
 424           Say N if you are unsure.
 425
 426 endmenu
 427
 428 menu "I/O subsystem"
 429
 430 config QDIO
 431         def_tristate y
 432         prompt "QDIO support"
 433         ---help---
 434           This driver provides the Queued Direct I/O base support for
 435           IBM System z.
 436
 437           To compile this driver as a module, choose M here: the
 438           module will be called qdio.
 439
 440           If unsure, say Y.
 441
 442 menuconfig PCI
 443         bool "PCI support"
 444         default n
 445         depends on 64BIT
 446         select ARCH_SUPPORTS_MSI
 447         select PCI_MSI
 448         help
 449           Enable PCI support.
 450
 451 if PCI
 452
 453 config PCI_NR_FUNCTIONS
 454         int "Maximum number of PCI functions (1-4096)"
 455         range 1 4096
 456         default "64"
 457         help
 458           This allows you to specify the maximum number of PCI functions which
 459           this kernel will support.
 460
 461 source "drivers/pci/Kconfig"
 462 source "drivers/pci/pcie/Kconfig"
 463 source "drivers/pci/hotplug/Kconfig"
 464
 465 endif   # PCI
 466
 467 config PCI_DOMAINS
 468         def_bool PCI
 469
 470 config HAS_IOMEM
 471         def_bool PCI
 472
 473 config IOMMU_HELPER
 474         def_bool PCI
 475
 476 config HAS_DMA
 477         def_bool PCI
 478         select HAVE_DMA_API_DEBUG
 479
 480 config NEED_SG_DMA_LENGTH
 481         def_bool PCI
 482
 483 config HAVE_DMA_ATTRS
 484         def_bool PCI
 485
 486 config NEED_DMA_MAP_STATE
 487         def_bool PCI
 488
 489 config CHSC_SCH
 490         def_tristate m
 491         prompt "Support for CHSC subchannels"
 492         help
 493           This driver allows usage of CHSC subchannels. A CHSC subchannel
 494           is usually present on LPAR only.
 495           The driver creates a device /dev/chsc, which may be used to
 496           obtain I/O configuration information about the machine and
 497           to issue asynchronous chsc commands (DANGEROUS).
 498           You will usually only want to use this interface on a special
 499           LPAR designated for system management.
 500
 501           To compile this driver as a module, choose M here: the
 502           module will be called chsc_sch.
 503
 504           If unsure, say N.
 505
 506 config SCM_BUS
 507         def_bool y
 508         depends on 64BIT
 509         prompt "SCM bus driver"
 510         help
 511           Bus driver for Storage Class Memory.
 512
 513 config EADM_SCH
 514         def_tristate m
 515         prompt "Support for EADM subchannels"
 516         depends on SCM_BUS
 517         help
 518           This driver allows usage of EADM subchannels. EADM subchannels act
 519           as a communication vehicle for SCM increments.
 520
 521           To compile this driver as a module, choose M here: the
 522           module will be called eadm_sch.
 523
 524 endmenu
 525
 526 menu "Dump support"
 527
 528 config CRASH_DUMP
 529         bool "kernel crash dumps"
 530         depends on 64BIT && SMP
 531         select KEXEC
 532         help
 533           Generate crash dump after being started by kexec.
 534           Crash dump kernels are loaded in the main kernel with kexec-tools
 535           into a specially reserved region and then later executed after
 536           a crash by kdump/kexec.
 537           For more details see Documentation/kdump/kdump.txt
 538
 539 config ZFCPDUMP
 540         def_bool n
 541         prompt "zfcpdump support"
 542         select SMP
 543         help
 544           Select this option if you want to build an zfcpdump enabled kernel.
 545           Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
 546
 547 endmenu
 548
 549 menu "Executable file formats / Emulations"
 550
 551 source "fs/Kconfig.binfmt"
 552
 553 config SECCOMP
 554         def_bool y
 555         prompt "Enable seccomp to safely compute untrusted bytecode"
 556         depends on PROC_FS
 557         help
 558           This kernel feature is useful for number crunching applications
 559           that may need to compute untrusted bytecode during their
 560           execution. By using pipes or other transports made available to
 561           the process as file descriptors supporting the read/write
 562           syscalls, it's possible to isolate those applications in
 563           their own address space using seccomp. Once seccomp is
 564           enabled via /proc/<pid>/seccomp, it cannot be disabled
 565           and the task is only allowed to execute a few safe syscalls
 566           defined by each seccomp mode.
 567
 568           If unsure, say Y.
 569
 570 endmenu
 571
 572 menu "Power Management"
 573
 574 config ARCH_HIBERNATION_POSSIBLE
 575         def_bool y if 64BIT
 576
 577 source "kernel/power/Kconfig"
 578
 579 endmenu
 580
 581 source "net/Kconfig"
 582
 583 config PCMCIA
 584         def_bool n
 585
 586 config CCW
 587         def_bool y
 588
 589 source "drivers/Kconfig"
 590
 591 source "fs/Kconfig"
 592
 593 source "arch/s390/Kconfig.debug"
 594
 595 source "security/Kconfig"
 596
 597 source "crypto/Kconfig"
 598
 599 source "lib/Kconfig"
 600
 601 menu "Virtualization"
 602
 603 config PFAULT
 604         def_bool y
 605         prompt "Pseudo page fault support"
 606         help
 607           Select this option, if you want to use PFAULT pseudo page fault
 608           handling under VM. If running native or in LPAR, this option
 609           has no effect. If your VM does not support PFAULT, PAGEEX
 610           pseudo page fault handling will be used.
 611           Note that VM 4.2 supports PFAULT but has a bug in its
 612           implementation that causes some problems.
 613           Everybody who wants to run Linux under VM != VM4.2 should select
 614           this option.
 615
 616 config SHARED_KERNEL
 617         bool "VM shared kernel support"
 618         depends on !JUMP_LABEL
 619         help
 620           Select this option, if you want to share the text segment of the
 621           Linux kernel between different VM guests. This reduces memory
 622           usage with lots of guests but greatly increases kernel size.
 623           Also if a kernel was IPL'ed from a shared segment the kexec system
 624           call will not work.
 625           You should only select this option if you know what you are
 626           doing and want to exploit this feature.
 627
 628 config CMM
 629         def_tristate n
 630         prompt "Cooperative memory management"
 631         help
 632           Select this option, if you want to enable the kernel interface
 633           to reduce the memory size of the system. This is accomplished
 634           by allocating pages of memory and put them "on hold". This only
 635           makes sense for a system running under VM where the unused pages
 636           will be reused by VM for other guest systems. The interface
 637           allows an external monitor to balance memory of many systems.
 638           Everybody who wants to run Linux under VM should select this
 639           option.
 640
 641 config CMM_IUCV
 642         def_bool y
 643         prompt "IUCV special message interface to cooperative memory management"
 644         depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
 645         help
 646           Select this option to enable the special message interface to
 647           the cooperative memory management.
 648
 649 config APPLDATA_BASE
 650         def_bool n
 651         prompt "Linux - VM Monitor Stream, base infrastructure"
 652         depends on PROC_FS
 653         help
 654           This provides a kernel interface for creating and updating z/VM APPLDATA
 655           monitor records. The monitor records are updated at certain time
 656           intervals, once the timer is started.
 657           Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
 658           i.e. enables or disables monitoring on the Linux side.
 659           A custom interval value (in seconds) can be written to
 660           /proc/appldata/interval.
 661
 662           Defaults are 60 seconds interval and timer off.
 663           The /proc entries can also be read from, showing the current settings.
 664
 665 config APPLDATA_MEM
 666         def_tristate m
 667         prompt "Monitor memory management statistics"
 668         depends on APPLDATA_BASE && VM_EVENT_COUNTERS
 669         help
 670           This provides memory management related data to the Linux - VM Monitor
 671           Stream, like paging/swapping rate, memory utilisation, etc.
 672           Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
 673           APPLDATA monitor record, i.e. enables or disables monitoring this record
 674           on the z/VM side.
 675
 676           Default is disabled.
 677           The /proc entry can also be read from, showing the current settings.
 678
 679           This can also be compiled as a module, which will be called
 680           appldata_mem.o.
 681
 682 config APPLDATA_OS
 683         def_tristate m
 684         prompt "Monitor OS statistics"
 685         depends on APPLDATA_BASE
 686         help
 687           This provides OS related data to the Linux - VM Monitor Stream, like
 688           CPU utilisation, etc.
 689           Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
 690           APPLDATA monitor record, i.e. enables or disables monitoring this record
 691           on the z/VM side.
 692
 693           Default is disabled.
 694           This can also be compiled as a module, which will be called
 695           appldata_os.o.
 696
 697 config APPLDATA_NET_SUM
 698         def_tristate m
 699         prompt "Monitor overall network statistics"
 700         depends on APPLDATA_BASE && NET
 701         help
 702           This provides network related data to the Linux - VM Monitor Stream,
 703           currently there is only a total sum of network I/O statistics, no
 704           per-interface data.
 705           Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
 706           APPLDATA monitor record, i.e. enables or disables monitoring this record
 707           on the z/VM side.
 708
 709           Default is disabled.
 710           This can also be compiled as a module, which will be called
 711           appldata_net_sum.o.
 712
 713 config S390_HYPFS_FS
 714         def_bool y
 715         prompt "s390 hypervisor file system support"
 716         select SYS_HYPERVISOR
 717         help
 718           This is a virtual file system intended to provide accounting
 719           information in an s390 hypervisor environment.
 720
 721 source "arch/s390/kvm/Kconfig"
 722
 723 config S390_GUEST
 724         def_bool y
 725         prompt "s390 support for virtio devices"
 726         depends on 64BIT
 727         select VIRTUALIZATION
 728         select VIRTIO
 729         select VIRTIO_CONSOLE
 730         help
 731           Enabling this option adds support for virtio based paravirtual device
 732           drivers on s390.
 733
 734           Select this option if you want to run the kernel as a guest under
 735           the KVM hypervisor.
 736
 737 endmenu