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_HAS_DEBUG_STRICT_USER_COPY_CHECKS
  66         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  67         select ARCH_INLINE_READ_LOCK
  68         select ARCH_INLINE_READ_LOCK_BH
  69         select ARCH_INLINE_READ_LOCK_IRQ
  70         select ARCH_INLINE_READ_LOCK_IRQSAVE
  71         select ARCH_INLINE_READ_TRYLOCK
  72         select ARCH_INLINE_READ_UNLOCK
  73         select ARCH_INLINE_READ_UNLOCK_BH
  74         select ARCH_INLINE_READ_UNLOCK_IRQ
  75         select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
  76         select ARCH_INLINE_SPIN_LOCK
  77         select ARCH_INLINE_SPIN_LOCK_BH
  78         select ARCH_INLINE_SPIN_LOCK_IRQ
  79         select ARCH_INLINE_SPIN_LOCK_IRQSAVE
  80         select ARCH_INLINE_SPIN_TRYLOCK
  81         select ARCH_INLINE_SPIN_TRYLOCK_BH
  82         select ARCH_INLINE_SPIN_UNLOCK
  83         select ARCH_INLINE_SPIN_UNLOCK_BH
  84         select ARCH_INLINE_SPIN_UNLOCK_IRQ
  85         select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
  86         select ARCH_INLINE_WRITE_LOCK
  87         select ARCH_INLINE_WRITE_LOCK_BH
  88         select ARCH_INLINE_WRITE_LOCK_IRQ
  89         select ARCH_INLINE_WRITE_LOCK_IRQSAVE
  90         select ARCH_INLINE_WRITE_TRYLOCK
  91         select ARCH_INLINE_WRITE_UNLOCK
  92         select ARCH_INLINE_WRITE_UNLOCK_BH
  93         select ARCH_INLINE_WRITE_UNLOCK_IRQ
  94         select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
  95         select ARCH_SAVE_PAGE_KEYS if HIBERNATION
  96         select ARCH_WANT_IPC_PARSE_VERSION
  97         select BUILDTIME_EXTABLE_SORT
  98         select CLONE_BACKWARDS2
  99         select GENERIC_CLOCKEVENTS
 100         select GENERIC_CPU_DEVICES if !SMP
 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_LZ4
 122         select HAVE_KERNEL_LZMA
 123         select HAVE_KERNEL_LZO
 124         select HAVE_KERNEL_XZ
 125         select HAVE_KPROBES
 126         select HAVE_KRETPROBES
 127         select HAVE_KVM if 64BIT
 128         select HAVE_MEMBLOCK
 129         select HAVE_MEMBLOCK_NODE_MAP
 130         select HAVE_MOD_ARCH_SPECIFIC
 131         select HAVE_OPROFILE
 132         select HAVE_PERF_EVENTS
 133         select HAVE_REGS_AND_STACK_ACCESS_API
 134         select HAVE_SYSCALL_TRACEPOINTS
 135         select HAVE_UID16 if 32BIT
 136         select HAVE_VIRT_CPU_ACCOUNTING
 137         select INIT_ALL_POSSIBLE
 138         select KTIME_SCALAR if 32BIT
 139         select MODULES_USE_ELF_RELA
 140         select OLD_SIGACTION
 141         select OLD_SIGSUSPEND3
 142         select SYSCTL_EXCEPTION_TRACE
 143         select USE_GENERIC_SMP_HELPERS if SMP
 144         select VIRT_CPU_ACCOUNTING
 145         select VIRT_TO_BUS
 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 zBC12 and zEC12"
 232         select HAVE_MARCH_ZEC12_FEATURES if 64BIT
 233         help
 234           Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
 235           2827 series). The kernel will be slightly faster but will not work on
 236           older machines.
 237
 238 endchoice
 239
 240 config 64BIT
 241         def_bool y
 242         prompt "64 bit kernel"
 243         help
 244           Select this option if you have an IBM z/Architecture machine
 245           and want to use the 64 bit addressing mode.
 246
 247 config 32BIT
 248         def_bool y if !64BIT
 249
 250 config COMPAT
 251         def_bool y
 252         prompt "Kernel support for 31 bit emulation"
 253         depends on 64BIT
 254         select COMPAT_BINFMT_ELF if BINFMT_ELF
 255         select ARCH_WANT_OLD_COMPAT_IPC
 256         select COMPAT_OLD_SIGACTION
 257         help
 258           Select this option if you want to enable your system kernel to
 259           handle system-calls from ELF binaries for 31 bit ESA.  This option
 260           (and some other stuff like libraries and such) is needed for
 261           executing 31 bit applications.  It is safe to say "Y".
 262
 263 config SYSVIPC_COMPAT
 264         def_bool y if COMPAT && SYSVIPC
 265
 266 config KEYS_COMPAT
 267         def_bool y if COMPAT && KEYS
 268
 269 config SMP
 270         def_bool y
 271         prompt "Symmetric multi-processing support"
 272         ---help---
 273           This enables support for systems with more than one CPU. If you have
 274           a system with only one CPU, like most personal computers, say N. If
 275           you have a system with more than one CPU, say Y.
 276
 277           If you say N here, the kernel will run on single and multiprocessor
 278           machines, but will use only one CPU of a multiprocessor machine. If
 279           you say Y here, the kernel will run on many, but not all,
 280           singleprocessor machines. On a singleprocessor machine, the kernel
 281           will run faster if you say N here.
 282
 283           See also the SMP-HOWTO available at
 284           <http://www.tldp.org/docs.html#howto>.
 285
 286           Even if you don't know what to do here, say Y.
 287
 288 config NR_CPUS
 289         int "Maximum number of CPUs (2-64)"
 290         range 2 64
 291         depends on SMP
 292         default "32" if !64BIT
 293         default "64" if 64BIT
 294         help
 295           This allows you to specify the maximum number of CPUs which this
 296           kernel will support.  The maximum supported value is 64 and the
 297           minimum value which makes sense is 2.
 298
 299           This is purely to save memory - each supported CPU adds
 300           approximately sixteen kilobytes to the kernel image.
 301
 302 config HOTPLUG_CPU
 303         def_bool y
 304         prompt "Support for hot-pluggable CPUs"
 305         depends on SMP
 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 CHECK_STACK
 379         def_bool y
 380         prompt "Detect kernel stack overflow"
 381         help
 382           This option enables the compiler option -mstack-guard and
 383           -mstack-size if they are available. If the compiler supports them
 384           it will emit additional code to each function prolog to trigger
 385           an illegal operation if the kernel stack is about to overflow.
 386
 387           Say N if you are unsure.
 388
 389 config STACK_GUARD
 390         int "Size of the guard area (128-1024)"
 391         range 128 1024
 392         depends on CHECK_STACK
 393         default "256"
 394         help
 395           This allows you to specify the size of the guard area at the lower
 396           end of the kernel stack. If the kernel stack points into the guard
 397           area on function entry an illegal operation is triggered. The size
 398           needs to be a power of 2. Please keep in mind that the size of an
 399           interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
 400           The minimum size for the stack guard should be 256 for 31 bit and
 401           512 for 64 bit.
 402
 403 config WARN_DYNAMIC_STACK
 404         def_bool n
 405         prompt "Emit compiler warnings for function with dynamic stack usage"
 406         help
 407           This option enables the compiler option -mwarn-dynamicstack. If the
 408           compiler supports this options generates warnings for functions
 409           that dynamically allocate stack space using alloca.
 410
 411           Say N if you are unsure.
 412
 413 endmenu
 414
 415 menu "I/O subsystem"
 416
 417 config QDIO
 418         def_tristate y
 419         prompt "QDIO support"
 420         ---help---
 421           This driver provides the Queued Direct I/O base support for
 422           IBM System z.
 423
 424           To compile this driver as a module, choose M here: the
 425           module will be called qdio.
 426
 427           If unsure, say Y.
 428
 429 menuconfig PCI
 430         bool "PCI support"
 431         default n
 432         depends on 64BIT
 433         select PCI_MSI
 434         help
 435           Enable PCI support.
 436
 437 if PCI
 438
 439 config PCI_NR_FUNCTIONS
 440         int "Maximum number of PCI functions (1-4096)"
 441         range 1 4096
 442         default "64"
 443         help
 444           This allows you to specify the maximum number of PCI functions which
 445           this kernel will support.
 446
 447 config PCI_NR_MSI
 448         int "Maximum number of MSI interrupts (64-32768)"
 449         range 64 32768
 450         default "256"
 451         help
 452           This defines the number of virtual interrupts the kernel will
 453           provide for MSI interrupts. If you configure your system to have
 454           too few drivers will fail to allocate MSI interrupts for all
 455           PCI devices.
 456
 457 source "drivers/pci/Kconfig"
 458 source "drivers/pci/pcie/Kconfig"
 459 source "drivers/pci/hotplug/Kconfig"
 460
 461 endif   # PCI
 462
 463 config PCI_DOMAINS
 464         def_bool PCI
 465
 466 config HAS_IOMEM
 467         def_bool PCI
 468
 469 config IOMMU_HELPER
 470         def_bool PCI
 471
 472 config HAS_DMA
 473         def_bool PCI
 474         select HAVE_DMA_API_DEBUG
 475
 476 config NEED_SG_DMA_LENGTH
 477         def_bool PCI
 478
 479 config HAVE_DMA_ATTRS
 480         def_bool PCI
 481
 482 config NEED_DMA_MAP_STATE
 483         def_bool PCI
 484
 485 config CHSC_SCH
 486         def_tristate m
 487         prompt "Support for CHSC subchannels"
 488         help
 489           This driver allows usage of CHSC subchannels. A CHSC subchannel
 490           is usually present on LPAR only.
 491           The driver creates a device /dev/chsc, which may be used to
 492           obtain I/O configuration information about the machine and
 493           to issue asynchronous chsc commands (DANGEROUS).
 494           You will usually only want to use this interface on a special
 495           LPAR designated for system management.
 496
 497           To compile this driver as a module, choose M here: the
 498           module will be called chsc_sch.
 499
 500           If unsure, say N.
 501
 502 config SCM_BUS
 503         def_bool y
 504         depends on 64BIT
 505         prompt "SCM bus driver"
 506         help
 507           Bus driver for Storage Class Memory.
 508
 509 config EADM_SCH
 510         def_tristate m
 511         prompt "Support for EADM subchannels"
 512         depends on SCM_BUS
 513         help
 514           This driver allows usage of EADM subchannels. EADM subchannels act
 515           as a communication vehicle for SCM increments.
 516
 517           To compile this driver as a module, choose M here: the
 518           module will be called eadm_sch.
 519
 520 endmenu
 521
 522 menu "Dump support"
 523
 524 config CRASH_DUMP
 525         bool "kernel crash dumps"
 526         depends on 64BIT && SMP
 527         select KEXEC
 528         select ZFCPDUMP
 529         help
 530           Generate crash dump after being started by kexec.
 531           Crash dump kernels are loaded in the main kernel with kexec-tools
 532           into a specially reserved region and then later executed after
 533           a crash by kdump/kexec.
 534           For more details see Documentation/kdump/kdump.txt
 535
 536 config ZFCPDUMP
 537         def_bool n
 538         prompt "zfcpdump support"
 539         depends on SMP
 540         help
 541           Select this option if you want to build an zfcpdump enabled kernel.
 542           Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
 543
 544 endmenu
 545
 546 menu "Executable file formats / Emulations"
 547
 548 source "fs/Kconfig.binfmt"
 549
 550 config SECCOMP
 551         def_bool y
 552         prompt "Enable seccomp to safely compute untrusted bytecode"
 553         depends on PROC_FS
 554         help
 555           This kernel feature is useful for number crunching applications
 556           that may need to compute untrusted bytecode during their
 557           execution. By using pipes or other transports made available to
 558           the process as file descriptors supporting the read/write
 559           syscalls, it's possible to isolate those applications in
 560           their own address space using seccomp. Once seccomp is
 561           enabled via /proc/<pid>/seccomp, it cannot be disabled
 562           and the task is only allowed to execute a few safe syscalls
 563           defined by each seccomp mode.
 564
 565           If unsure, say Y.
 566
 567 endmenu
 568
 569 menu "Power Management"
 570
 571 config ARCH_HIBERNATION_POSSIBLE
 572         def_bool y if 64BIT
 573
 574 source "kernel/power/Kconfig"
 575
 576 endmenu
 577
 578 source "net/Kconfig"
 579
 580 config PCMCIA
 581         def_bool n
 582
 583 config CCW
 584         def_bool y
 585
 586 source "drivers/Kconfig"
 587
 588 source "fs/Kconfig"
 589
 590 source "arch/s390/Kconfig.debug"
 591
 592 source "security/Kconfig"
 593
 594 source "crypto/Kconfig"
 595
 596 source "lib/Kconfig"
 597
 598 menu "Virtualization"
 599
 600 config PFAULT
 601         def_bool y
 602         prompt "Pseudo page fault support"
 603         help
 604           Select this option, if you want to use PFAULT pseudo page fault
 605           handling under VM. If running native or in LPAR, this option
 606           has no effect. If your VM does not support PFAULT, PAGEEX
 607           pseudo page fault handling will be used.
 608           Note that VM 4.2 supports PFAULT but has a bug in its
 609           implementation that causes some problems.
 610           Everybody who wants to run Linux under VM != VM4.2 should select
 611           this option.
 612
 613 config SHARED_KERNEL
 614         bool "VM shared kernel support"
 615         depends on !JUMP_LABEL
 616         help
 617           Select this option, if you want to share the text segment of the
 618           Linux kernel between different VM guests. This reduces memory
 619           usage with lots of guests but greatly increases kernel size.
 620           Also if a kernel was IPL'ed from a shared segment the kexec system
 621           call will not work.
 622           You should only select this option if you know what you are
 623           doing and want to exploit this feature.
 624
 625 config CMM
 626         def_tristate n
 627         prompt "Cooperative memory management"
 628         help
 629           Select this option, if you want to enable the kernel interface
 630           to reduce the memory size of the system. This is accomplished
 631           by allocating pages of memory and put them "on hold". This only
 632           makes sense for a system running under VM where the unused pages
 633           will be reused by VM for other guest systems. The interface
 634           allows an external monitor to balance memory of many systems.
 635           Everybody who wants to run Linux under VM should select this
 636           option.
 637
 638 config CMM_IUCV
 639         def_bool y
 640         prompt "IUCV special message interface to cooperative memory management"
 641         depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
 642         help
 643           Select this option to enable the special message interface to
 644           the cooperative memory management.
 645
 646 config APPLDATA_BASE
 647         def_bool n
 648         prompt "Linux - VM Monitor Stream, base infrastructure"
 649         depends on PROC_FS
 650         help
 651           This provides a kernel interface for creating and updating z/VM APPLDATA
 652           monitor records. The monitor records are updated at certain time
 653           intervals, once the timer is started.
 654           Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
 655           i.e. enables or disables monitoring on the Linux side.
 656           A custom interval value (in seconds) can be written to
 657           /proc/appldata/interval.
 658
 659           Defaults are 60 seconds interval and timer off.
 660           The /proc entries can also be read from, showing the current settings.
 661
 662 config APPLDATA_MEM
 663         def_tristate m
 664         prompt "Monitor memory management statistics"
 665         depends on APPLDATA_BASE && VM_EVENT_COUNTERS
 666         help
 667           This provides memory management related data to the Linux - VM Monitor
 668           Stream, like paging/swapping rate, memory utilisation, etc.
 669           Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
 670           APPLDATA monitor record, i.e. enables or disables monitoring this record
 671           on the z/VM side.
 672
 673           Default is disabled.
 674           The /proc entry can also be read from, showing the current settings.
 675
 676           This can also be compiled as a module, which will be called
 677           appldata_mem.o.
 678
 679 config APPLDATA_OS
 680         def_tristate m
 681         prompt "Monitor OS statistics"
 682         depends on APPLDATA_BASE
 683         help
 684           This provides OS related data to the Linux - VM Monitor Stream, like
 685           CPU utilisation, etc.
 686           Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
 687           APPLDATA monitor record, i.e. enables or disables monitoring this record
 688           on the z/VM side.
 689
 690           Default is disabled.
 691           This can also be compiled as a module, which will be called
 692           appldata_os.o.
 693
 694 config APPLDATA_NET_SUM
 695         def_tristate m
 696         prompt "Monitor overall network statistics"
 697         depends on APPLDATA_BASE && NET
 698         help
 699           This provides network related data to the Linux - VM Monitor Stream,
 700           currently there is only a total sum of network I/O statistics, no
 701           per-interface data.
 702           Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
 703           APPLDATA monitor record, i.e. enables or disables monitoring this record
 704           on the z/VM side.
 705
 706           Default is disabled.
 707           This can also be compiled as a module, which will be called
 708           appldata_net_sum.o.
 709
 710 config S390_HYPFS_FS
 711         def_bool y
 712         prompt "s390 hypervisor file system support"
 713         select SYS_HYPERVISOR
 714         help
 715           This is a virtual file system intended to provide accounting
 716           information in an s390 hypervisor environment.
 717
 718 source "arch/s390/kvm/Kconfig"
 719
 720 config S390_GUEST
 721         def_bool y
 722         prompt "s390 support for virtio devices"
 723         depends on 64BIT
 724         select TTY
 725         select VIRTUALIZATION
 726         select VIRTIO
 727         select VIRTIO_CONSOLE
 728         help
 729           Enabling this option adds support for virtio based paravirtual device
 730           drivers on s390.
 731
 732           Select this option if you want to run the kernel as a guest under
 733           the KVM hypervisor.
 734
 735 endmenu