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