1config MMU 2 def_bool y 3 4config ZONE_DMA 5 def_bool y 6 7config LOCKDEP_SUPPORT 8 def_bool y 9 10config STACKTRACE_SUPPORT 11 def_bool y 12 13config HAVE_LATENCYTOP_SUPPORT 14 def_bool y 15 16config RWSEM_GENERIC_SPINLOCK 17 bool 18 19config RWSEM_XCHGADD_ALGORITHM 20 def_bool y 21 22config ARCH_HAS_ILOG2_U32 23 def_bool n 24 25config ARCH_HAS_ILOG2_U64 26 def_bool n 27 28config GENERIC_HWEIGHT 29 def_bool y 30 31config GENERIC_BUG 32 def_bool y if BUG 33 34config GENERIC_BUG_RELATIVE_POINTERS 35 def_bool y 36 37config ARCH_DMA_ADDR_T_64BIT 38 def_bool 64BIT 39 40config GENERIC_LOCKBREAK 41 def_bool y if SMP && PREEMPT 42 43config PGSTE 44 def_bool y if KVM 45 46config ARCH_SUPPORTS_DEBUG_PAGEALLOC 47 def_bool y 48 49config KEXEC 50 def_bool y 51 52config AUDIT_ARCH 53 def_bool y 54 55config NO_IOPORT_MAP 56 def_bool y 57 58config PCI_QUIRKS 59 def_bool n 60 61config S390 62 def_bool y 63 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 64 select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS 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_SUPPORTS_ATOMIC_RMW 96 select ARCH_USE_CMPXCHG_LOCKREF 97 select ARCH_WANT_IPC_PARSE_VERSION 98 select BUILDTIME_EXTABLE_SORT 99 select CLONE_BACKWARDS2 100 select GENERIC_CLOCKEVENTS 101 select GENERIC_CPU_DEVICES if !SMP 102 select GENERIC_FIND_FIRST_BIT 103 select GENERIC_SMP_IDLE_THREAD 104 select GENERIC_TIME_VSYSCALL 105 select HAVE_ALIGNED_STRUCT_PAGE if SLUB 106 select HAVE_ARCH_AUDITSYSCALL 107 select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 108 select HAVE_ARCH_SECCOMP_FILTER 109 select HAVE_ARCH_TRACEHOOK 110 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT 111 select HAVE_BPF_JIT if 64BIT && PACK_STACK 112 select HAVE_CMPXCHG_DOUBLE 113 select HAVE_CMPXCHG_LOCAL 114 select HAVE_C_RECORDMCOUNT 115 select HAVE_DEBUG_KMEMLEAK 116 select HAVE_DYNAMIC_FTRACE 117 select HAVE_FTRACE_MCOUNT_RECORD 118 select HAVE_FUNCTION_GRAPH_TRACER 119 select HAVE_FUNCTION_TRACER 120 select HAVE_FUTEX_CMPXCHG if FUTEX 121 select HAVE_KERNEL_BZIP2 122 select HAVE_KERNEL_GZIP 123 select HAVE_KERNEL_LZ4 124 select HAVE_KERNEL_LZMA 125 select HAVE_KERNEL_LZO 126 select HAVE_KERNEL_XZ 127 select HAVE_KPROBES 128 select HAVE_KRETPROBES 129 select HAVE_KVM if 64BIT 130 select HAVE_MEMBLOCK 131 select HAVE_MEMBLOCK_NODE_MAP 132 select HAVE_MEMBLOCK_PHYS_MAP 133 select HAVE_MOD_ARCH_SPECIFIC 134 select HAVE_OPROFILE 135 select HAVE_PERF_EVENTS 136 select HAVE_REGS_AND_STACK_ACCESS_API 137 select HAVE_SYSCALL_TRACEPOINTS 138 select HAVE_UID16 if 32BIT 139 select HAVE_VIRT_CPU_ACCOUNTING 140 select MODULES_USE_ELF_RELA 141 select NO_BOOTMEM 142 select OLD_SIGACTION 143 select OLD_SIGSUSPEND3 144 select SYSCTL_EXCEPTION_TRACE 145 select TTY 146 select VIRT_CPU_ACCOUNTING 147 select VIRT_TO_BUS 148 select ARCH_HAS_SG_CHAIN 149 150config SCHED_OMIT_FRAME_POINTER 151 def_bool y 152 153source "init/Kconfig" 154 155source "kernel/Kconfig.freezer" 156 157menu "Processor type and features" 158 159config HAVE_MARCH_Z900_FEATURES 160 def_bool n 161 162config HAVE_MARCH_Z990_FEATURES 163 def_bool n 164 select HAVE_MARCH_Z900_FEATURES 165 166config HAVE_MARCH_Z9_109_FEATURES 167 def_bool n 168 select HAVE_MARCH_Z990_FEATURES 169 170config HAVE_MARCH_Z10_FEATURES 171 def_bool n 172 select HAVE_MARCH_Z9_109_FEATURES 173 174config HAVE_MARCH_Z196_FEATURES 175 def_bool n 176 select HAVE_MARCH_Z10_FEATURES 177 178config HAVE_MARCH_ZEC12_FEATURES 179 def_bool n 180 select HAVE_MARCH_Z196_FEATURES 181 182choice 183 prompt "Processor type" 184 default MARCH_G5 185 186config MARCH_G5 187 bool "System/390 model G5 and G6" 188 depends on !64BIT 189 help 190 Select this to build a 31 bit kernel that works 191 on all ESA/390 and z/Architecture machines. 192 193config MARCH_Z900 194 bool "IBM zSeries model z800 and z900" 195 select HAVE_MARCH_Z900_FEATURES if 64BIT 196 help 197 Select this to enable optimizations for model z800/z900 (2064 and 198 2066 series). This will enable some optimizations that are not 199 available on older ESA/390 (31 Bit) only CPUs. 200 201config MARCH_Z990 202 bool "IBM zSeries model z890 and z990" 203 select HAVE_MARCH_Z990_FEATURES if 64BIT 204 help 205 Select this to enable optimizations for model z890/z990 (2084 and 206 2086 series). The kernel will be slightly faster but will not work 207 on older machines. 208 209config MARCH_Z9_109 210 bool "IBM System z9" 211 select HAVE_MARCH_Z9_109_FEATURES if 64BIT 212 help 213 Select this to enable optimizations for IBM System z9 (2094 and 214 2096 series). The kernel will be slightly faster but will not work 215 on older machines. 216 217config MARCH_Z10 218 bool "IBM System z10" 219 select HAVE_MARCH_Z10_FEATURES if 64BIT 220 help 221 Select this to enable optimizations for IBM System z10 (2097 and 222 2098 series). The kernel will be slightly faster but will not work 223 on older machines. 224 225config MARCH_Z196 226 bool "IBM zEnterprise 114 and 196" 227 select HAVE_MARCH_Z196_FEATURES if 64BIT 228 help 229 Select this to enable optimizations for IBM zEnterprise 114 and 196 230 (2818 and 2817 series). The kernel will be slightly faster but will 231 not work on older machines. 232 233config MARCH_ZEC12 234 bool "IBM zBC12 and zEC12" 235 select HAVE_MARCH_ZEC12_FEATURES if 64BIT 236 help 237 Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and 238 2827 series). The kernel will be slightly faster but will not work on 239 older machines. 240 241endchoice 242 243config MARCH_G5_TUNE 244 def_bool TUNE_G5 || MARCH_G5 && TUNE_DEFAULT 245 246config MARCH_Z900_TUNE 247 def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT 248 249config MARCH_Z990_TUNE 250 def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT 251 252config MARCH_Z9_109_TUNE 253 def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT 254 255config MARCH_Z10_TUNE 256 def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT 257 258config MARCH_Z196_TUNE 259 def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT 260 261config MARCH_ZEC12_TUNE 262 def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT 263 264choice 265 prompt "Tune code generation" 266 default TUNE_DEFAULT 267 help 268 Cause the compiler to tune (-mtune) the generated code for a machine. 269 This will make the code run faster on the selected machine but 270 somewhat slower on other machines. 271 This option only changes how the compiler emits instructions, not the 272 selection of instructions itself, so the resulting kernel will run on 273 all other machines. 274 275config TUNE_DEFAULT 276 bool "Default" 277 help 278 Tune the generated code for the target processor for which the kernel 279 will be compiled. 280 281config TUNE_G5 282 bool "System/390 model G5 and G6" 283 284config TUNE_Z900 285 bool "IBM zSeries model z800 and z900" 286 287config TUNE_Z990 288 bool "IBM zSeries model z890 and z990" 289 290config TUNE_Z9_109 291 bool "IBM System z9" 292 293config TUNE_Z10 294 bool "IBM System z10" 295 296config TUNE_Z196 297 bool "IBM zEnterprise 114 and 196" 298 299config TUNE_ZEC12 300 bool "IBM zBC12 and zEC12" 301 302endchoice 303 304config 64BIT 305 def_bool y 306 prompt "64 bit kernel" 307 help 308 Select this option if you have an IBM z/Architecture machine 309 and want to use the 64 bit addressing mode. 310 311config 32BIT 312 def_bool y if !64BIT 313 314config COMPAT 315 def_bool y 316 prompt "Kernel support for 31 bit emulation" 317 depends on 64BIT 318 select COMPAT_BINFMT_ELF if BINFMT_ELF 319 select ARCH_WANT_OLD_COMPAT_IPC 320 select COMPAT_OLD_SIGACTION 321 help 322 Select this option if you want to enable your system kernel to 323 handle system-calls from ELF binaries for 31 bit ESA. This option 324 (and some other stuff like libraries and such) is needed for 325 executing 31 bit applications. It is safe to say "Y". 326 327config SYSVIPC_COMPAT 328 def_bool y if COMPAT && SYSVIPC 329 330config KEYS_COMPAT 331 def_bool y if COMPAT && KEYS 332 333config SMP 334 def_bool y 335 prompt "Symmetric multi-processing support" 336 ---help--- 337 This enables support for systems with more than one CPU. If you have 338 a system with only one CPU, like most personal computers, say N. If 339 you have a system with more than one CPU, say Y. 340 341 If you say N here, the kernel will run on uni- and multiprocessor 342 machines, but will use only one CPU of a multiprocessor machine. If 343 you say Y here, the kernel will run on many, but not all, 344 uniprocessor machines. On a uniprocessor machine, the kernel 345 will run faster if you say N here. 346 347 See also the SMP-HOWTO available at 348 <http://www.tldp.org/docs.html#howto>. 349 350 Even if you don't know what to do here, say Y. 351 352config NR_CPUS 353 int "Maximum number of CPUs (2-256)" 354 range 2 256 355 depends on SMP 356 default "32" if !64BIT 357 default "64" if 64BIT 358 help 359 This allows you to specify the maximum number of CPUs which this 360 kernel will support. The maximum supported value is 256 and the 361 minimum value which makes sense is 2. 362 363 This is purely to save memory - each supported CPU adds 364 approximately sixteen kilobytes to the kernel image. 365 366config HOTPLUG_CPU 367 def_bool y 368 prompt "Support for hot-pluggable CPUs" 369 depends on SMP 370 help 371 Say Y here to be able to turn CPUs off and on. CPUs 372 can be controlled through /sys/devices/system/cpu/cpu#. 373 Say N if you want to disable CPU hotplug. 374 375config SCHED_MC 376 def_bool n 377 378config SCHED_BOOK 379 def_bool y 380 prompt "Book scheduler support" 381 depends on SMP 382 select SCHED_MC 383 help 384 Book scheduler support improves the CPU scheduler's decision making 385 when dealing with machines that have several books. 386 387source kernel/Kconfig.preempt 388 389config MATHEMU 390 def_bool y 391 prompt "IEEE FPU emulation" 392 depends on MARCH_G5 393 help 394 This option is required for IEEE compliant floating point arithmetic 395 on older ESA/390 machines. Say Y unless you know your machine doesn't 396 need this. 397 398source kernel/Kconfig.hz 399 400endmenu 401 402menu "Memory setup" 403 404config ARCH_SPARSEMEM_ENABLE 405 def_bool y 406 select SPARSEMEM_VMEMMAP_ENABLE 407 select SPARSEMEM_VMEMMAP 408 select SPARSEMEM_STATIC if !64BIT 409 410config ARCH_SPARSEMEM_DEFAULT 411 def_bool y 412 413config ARCH_SELECT_MEMORY_MODEL 414 def_bool y 415 416config ARCH_ENABLE_MEMORY_HOTPLUG 417 def_bool y if SPARSEMEM 418 419config ARCH_ENABLE_MEMORY_HOTREMOVE 420 def_bool y 421 422config ARCH_ENABLE_SPLIT_PMD_PTLOCK 423 def_bool y 424 depends on 64BIT 425 426config FORCE_MAX_ZONEORDER 427 int 428 default "9" 429 430source "mm/Kconfig" 431 432config PACK_STACK 433 def_bool y 434 prompt "Pack kernel stack" 435 help 436 This option enables the compiler option -mkernel-backchain if it 437 is available. If the option is available the compiler supports 438 the new stack layout which dramatically reduces the minimum stack 439 frame size. With an old compiler a non-leaf function needs a 440 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With 441 -mkernel-backchain the minimum size drops to 16 byte on 31 bit 442 and 24 byte on 64 bit. 443 444 Say Y if you are unsure. 445 446config CHECK_STACK 447 def_bool y 448 prompt "Detect kernel stack overflow" 449 help 450 This option enables the compiler option -mstack-guard and 451 -mstack-size if they are available. If the compiler supports them 452 it will emit additional code to each function prolog to trigger 453 an illegal operation if the kernel stack is about to overflow. 454 455 Say N if you are unsure. 456 457config STACK_GUARD 458 int "Size of the guard area (128-1024)" 459 range 128 1024 460 depends on CHECK_STACK 461 default "256" 462 help 463 This allows you to specify the size of the guard area at the lower 464 end of the kernel stack. If the kernel stack points into the guard 465 area on function entry an illegal operation is triggered. The size 466 needs to be a power of 2. Please keep in mind that the size of an 467 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. 468 The minimum size for the stack guard should be 256 for 31 bit and 469 512 for 64 bit. 470 471config WARN_DYNAMIC_STACK 472 def_bool n 473 prompt "Emit compiler warnings for function with dynamic stack usage" 474 help 475 This option enables the compiler option -mwarn-dynamicstack. If the 476 compiler supports this options generates warnings for functions 477 that dynamically allocate stack space using alloca. 478 479 Say N if you are unsure. 480 481endmenu 482 483menu "I/O subsystem" 484 485config QDIO 486 def_tristate y 487 prompt "QDIO support" 488 ---help--- 489 This driver provides the Queued Direct I/O base support for 490 IBM System z. 491 492 To compile this driver as a module, choose M here: the 493 module will be called qdio. 494 495 If unsure, say Y. 496 497menuconfig PCI 498 bool "PCI support" 499 default n 500 depends on 64BIT 501 select PCI_MSI 502 help 503 Enable PCI support. 504 505if PCI 506 507config PCI_NR_FUNCTIONS 508 int "Maximum number of PCI functions (1-4096)" 509 range 1 4096 510 default "64" 511 help 512 This allows you to specify the maximum number of PCI functions which 513 this kernel will support. 514 515config PCI_NR_MSI 516 int "Maximum number of MSI interrupts (64-32768)" 517 range 64 32768 518 default "256" 519 help 520 This defines the number of virtual interrupts the kernel will 521 provide for MSI interrupts. If you configure your system to have 522 too few drivers will fail to allocate MSI interrupts for all 523 PCI devices. 524 525source "drivers/pci/Kconfig" 526source "drivers/pci/pcie/Kconfig" 527source "drivers/pci/hotplug/Kconfig" 528 529endif # PCI 530 531config PCI_DOMAINS 532 def_bool PCI 533 534config HAS_IOMEM 535 def_bool PCI 536 537config IOMMU_HELPER 538 def_bool PCI 539 540config HAS_DMA 541 def_bool PCI 542 select HAVE_DMA_API_DEBUG 543 544config NEED_SG_DMA_LENGTH 545 def_bool PCI 546 547config HAVE_DMA_ATTRS 548 def_bool PCI 549 550config NEED_DMA_MAP_STATE 551 def_bool PCI 552 553config CHSC_SCH 554 def_tristate m 555 prompt "Support for CHSC subchannels" 556 help 557 This driver allows usage of CHSC subchannels. A CHSC subchannel 558 is usually present on LPAR only. 559 The driver creates a device /dev/chsc, which may be used to 560 obtain I/O configuration information about the machine and 561 to issue asynchronous chsc commands (DANGEROUS). 562 You will usually only want to use this interface on a special 563 LPAR designated for system management. 564 565 To compile this driver as a module, choose M here: the 566 module will be called chsc_sch. 567 568 If unsure, say N. 569 570config SCM_BUS 571 def_bool y 572 depends on 64BIT 573 prompt "SCM bus driver" 574 help 575 Bus driver for Storage Class Memory. 576 577config EADM_SCH 578 def_tristate m 579 prompt "Support for EADM subchannels" 580 depends on SCM_BUS 581 help 582 This driver allows usage of EADM subchannels. EADM subchannels act 583 as a communication vehicle for SCM increments. 584 585 To compile this driver as a module, choose M here: the 586 module will be called eadm_sch. 587 588endmenu 589 590menu "Dump support" 591 592config CRASH_DUMP 593 bool "kernel crash dumps" 594 depends on 64BIT && SMP 595 select KEXEC 596 help 597 Generate crash dump after being started by kexec. 598 Crash dump kernels are loaded in the main kernel with kexec-tools 599 into a specially reserved region and then later executed after 600 a crash by kdump/kexec. 601 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. 602 This option also enables s390 zfcpdump. 603 See also <file:Documentation/s390/zfcpdump.txt> 604 605endmenu 606 607menu "Executable file formats / Emulations" 608 609source "fs/Kconfig.binfmt" 610 611config SECCOMP 612 def_bool y 613 prompt "Enable seccomp to safely compute untrusted bytecode" 614 depends on PROC_FS 615 help 616 This kernel feature is useful for number crunching applications 617 that may need to compute untrusted bytecode during their 618 execution. By using pipes or other transports made available to 619 the process as file descriptors supporting the read/write 620 syscalls, it's possible to isolate those applications in 621 their own address space using seccomp. Once seccomp is 622 enabled via /proc/<pid>/seccomp, it cannot be disabled 623 and the task is only allowed to execute a few safe syscalls 624 defined by each seccomp mode. 625 626 If unsure, say Y. 627 628endmenu 629 630menu "Power Management" 631 632config ARCH_HIBERNATION_POSSIBLE 633 def_bool y if 64BIT 634 635source "kernel/power/Kconfig" 636 637endmenu 638 639source "net/Kconfig" 640 641config PCMCIA 642 def_bool n 643 644config CCW 645 def_bool y 646 647source "drivers/Kconfig" 648 649source "fs/Kconfig" 650 651source "arch/s390/Kconfig.debug" 652 653source "security/Kconfig" 654 655source "crypto/Kconfig" 656 657source "lib/Kconfig" 658 659menu "Virtualization" 660 661config PFAULT 662 def_bool y 663 prompt "Pseudo page fault support" 664 help 665 Select this option, if you want to use PFAULT pseudo page fault 666 handling under VM. If running native or in LPAR, this option 667 has no effect. If your VM does not support PFAULT, PAGEEX 668 pseudo page fault handling will be used. 669 Note that VM 4.2 supports PFAULT but has a bug in its 670 implementation that causes some problems. 671 Everybody who wants to run Linux under VM != VM4.2 should select 672 this option. 673 674config SHARED_KERNEL 675 bool "VM shared kernel support" 676 depends on !JUMP_LABEL 677 help 678 Select this option, if you want to share the text segment of the 679 Linux kernel between different VM guests. This reduces memory 680 usage with lots of guests but greatly increases kernel size. 681 Also if a kernel was IPL'ed from a shared segment the kexec system 682 call will not work. 683 You should only select this option if you know what you are 684 doing and want to exploit this feature. 685 686config CMM 687 def_tristate n 688 prompt "Cooperative memory management" 689 help 690 Select this option, if you want to enable the kernel interface 691 to reduce the memory size of the system. This is accomplished 692 by allocating pages of memory and put them "on hold". This only 693 makes sense for a system running under VM where the unused pages 694 will be reused by VM for other guest systems. The interface 695 allows an external monitor to balance memory of many systems. 696 Everybody who wants to run Linux under VM should select this 697 option. 698 699config CMM_IUCV 700 def_bool y 701 prompt "IUCV special message interface to cooperative memory management" 702 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) 703 help 704 Select this option to enable the special message interface to 705 the cooperative memory management. 706 707config APPLDATA_BASE 708 def_bool n 709 prompt "Linux - VM Monitor Stream, base infrastructure" 710 depends on PROC_FS 711 help 712 This provides a kernel interface for creating and updating z/VM APPLDATA 713 monitor records. The monitor records are updated at certain time 714 intervals, once the timer is started. 715 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, 716 i.e. enables or disables monitoring on the Linux side. 717 A custom interval value (in seconds) can be written to 718 /proc/appldata/interval. 719 720 Defaults are 60 seconds interval and timer off. 721 The /proc entries can also be read from, showing the current settings. 722 723config APPLDATA_MEM 724 def_tristate m 725 prompt "Monitor memory management statistics" 726 depends on APPLDATA_BASE && VM_EVENT_COUNTERS 727 help 728 This provides memory management related data to the Linux - VM Monitor 729 Stream, like paging/swapping rate, memory utilisation, etc. 730 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM 731 APPLDATA monitor record, i.e. enables or disables monitoring this record 732 on the z/VM side. 733 734 Default is disabled. 735 The /proc entry can also be read from, showing the current settings. 736 737 This can also be compiled as a module, which will be called 738 appldata_mem.o. 739 740config APPLDATA_OS 741 def_tristate m 742 prompt "Monitor OS statistics" 743 depends on APPLDATA_BASE 744 help 745 This provides OS related data to the Linux - VM Monitor Stream, like 746 CPU utilisation, etc. 747 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM 748 APPLDATA monitor record, i.e. enables or disables monitoring this record 749 on the z/VM side. 750 751 Default is disabled. 752 This can also be compiled as a module, which will be called 753 appldata_os.o. 754 755config APPLDATA_NET_SUM 756 def_tristate m 757 prompt "Monitor overall network statistics" 758 depends on APPLDATA_BASE && NET 759 help 760 This provides network related data to the Linux - VM Monitor Stream, 761 currently there is only a total sum of network I/O statistics, no 762 per-interface data. 763 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM 764 APPLDATA monitor record, i.e. enables or disables monitoring this record 765 on the z/VM side. 766 767 Default is disabled. 768 This can also be compiled as a module, which will be called 769 appldata_net_sum.o. 770 771config S390_HYPFS_FS 772 def_bool y 773 prompt "s390 hypervisor file system support" 774 select SYS_HYPERVISOR 775 help 776 This is a virtual file system intended to provide accounting 777 information in an s390 hypervisor environment. 778 779source "arch/s390/kvm/Kconfig" 780 781config S390_GUEST 782 def_bool y 783 prompt "s390 support for virtio devices" 784 depends on 64BIT 785 select TTY 786 select VIRTUALIZATION 787 select VIRTIO 788 select VIRTIO_CONSOLE 789 help 790 Enabling this option adds support for virtio based paravirtual device 791 drivers on s390. 792 793 Select this option if you want to run the kernel as a guest under 794 the KVM hypervisor. 795 796endmenu 797