arch/i386/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux Kernel Configuration"
   7
   8 config X86
   9         bool
  10         default y
  11         help
  12           This is Linux's home port.  Linux was originally native to the Intel
  13           386, and runs on all the later x86 processors including the Intel
  14           486, 586, Pentiums, and various instruction-set-compatible chips by
  15           AMD, Cyrix, and others.
  16
  17 config MMU
  18         bool
  19         default y
  20
  21 config SBUS
  22         bool
  23
  24 config UID16
  25         bool
  26         default y
  27
  28 config GENERIC_ISA_DMA
  29         bool
  30         default y
  31
  32 config GENERIC_IOMAP
  33         bool
  34         default y
  35
  36 source "init/Kconfig"
  37
  38 menu "Processor type and features"
  39
  40 choice
  41         prompt "Subarchitecture Type"
  42         default X86_PC
  43
  44 config X86_PC
  45         bool "PC-compatible"
  46         help
  47           Choose this option if your computer is a standard PC or compatible.
  48
  49 config X86_ELAN
  50         bool "AMD Elan"
  51         help
  52           Select this for an AMD Elan processor.
  53
  54           Do not use this option for K6/Athlon/Opteron processors!
  55
  56           If unsure, choose "PC-compatible" instead.
  57
  58 config X86_VOYAGER
  59         bool "Voyager (NCR)"
  60         help
  61           Voyager is an MCA-based 32-way capable SMP architecture proprietary
  62           to NCR Corp.  Machine classes 345x/35xx/4100/51xx are Voyager-based.
  63
  64           *** WARNING ***
  65
  66           If you do not specifically know you have a Voyager based machine,
  67           say N here, otherwise the kernel you build will not be bootable.
  68
  69 config X86_NUMAQ
  70         bool "NUMAQ (IBM/Sequent)"
  71         select DISCONTIGMEM
  72         select NUMA
  73         help
  74           This option is used for getting Linux to run on a (IBM/Sequent) NUMA
  75           multiquad box. This changes the way that processors are bootstrapped,
  76           and uses Clustered Logical APIC addressing mode instead of Flat Logical.
  77           You will need a new lynxer.elf file to flash your firmware with - send
  78           email to <Martin.Bligh@us.ibm.com>.
  79
  80 config X86_SUMMIT
  81         bool "Summit/EXA (IBM x440)"
  82         depends on SMP
  83         help
  84           This option is needed for IBM systems that use the Summit/EXA chipset.
  85           In particular, it is needed for the x440.
  86
  87           If you don't have one of these computers, you should say N here.
  88
  89 config X86_BIGSMP
  90         bool "Support for other sub-arch SMP systems with more than 8 CPUs"
  91         depends on SMP
  92         help
  93           This option is needed for the systems that have more than 8 CPUs
  94           and if the system is not of any sub-arch type above.
  95
  96           If you don't have such a system, you should say N here.
  97
  98 config X86_VISWS
  99         bool "SGI 320/540 (Visual Workstation)"
 100         help
 101           The SGI Visual Workstation series is an IA32-based workstation
 102           based on SGI systems chips with some legacy PC hardware attached.
 103
 104           Say Y here to create a kernel to run on the SGI 320 or 540.
 105
 106           A kernel compiled for the Visual Workstation will not run on PCs
 107           and vice versa. See <file:Documentation/sgi-visws.txt> for details.
 108
 109 config X86_GENERICARCH
 110        bool "Generic architecture (Summit, bigsmp, ES7000, default)"
 111        depends on SMP
 112        help
 113           This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
 114           It is intended for a generic binary kernel.
 115
 116 config X86_ES7000
 117         bool "Support for Unisys ES7000 IA32 series"
 118         depends on SMP
 119         help
 120           Support for Unisys ES7000 systems.  Say 'Y' here if this kernel is
 121           supposed to run on an IA32-based Unisys ES7000 system.
 122           Only choose this option if you have such a system, otherwise you
 123           should say N here.
 124
 125 endchoice
 126
 127 config ACPI_SRAT
 128         bool
 129         default y
 130         depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
 131
 132 config X86_SUMMIT_NUMA
 133         bool
 134         default y
 135         depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
 136
 137 config X86_CYCLONE_TIMER
 138         bool
 139         default y
 140         depends on X86_SUMMIT || X86_GENERICARCH
 141
 142 config ES7000_CLUSTERED_APIC
 143         bool
 144         default y
 145         depends on SMP && X86_ES7000 && MPENTIUMIII
 146
 147 if !X86_ELAN
 148
 149 choice
 150         prompt "Processor family"
 151         default M686
 152
 153 config M386
 154         bool "386"
 155         ---help---
 156           This is the processor type of your CPU. This information is used for
 157           optimizing purposes. In order to compile a kernel that can run on
 158           all x86 CPU types (albeit not optimally fast), you can specify
 159           "386" here.
 160
 161           The kernel will not necessarily run on earlier architectures than
 162           the one you have chosen, e.g. a Pentium optimized kernel will run on
 163           a PPro, but not necessarily on a i486.
 164
 165           Here are the settings recommended for greatest speed:
 166           - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI
 167           486DLC/DLC2, UMC 486SX-S and NexGen Nx586.  Only "386" kernels
 168           will run on a 386 class machine.
 169           - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
 170           SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
 171           - "586" for generic Pentium CPUs lacking the TSC
 172           (time stamp counter) register.
 173           - "Pentium-Classic" for the Intel Pentium.
 174           - "Pentium-MMX" for the Intel Pentium MMX.
 175           - "Pentium-Pro" for the Intel Pentium Pro.
 176           - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
 177           - "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
 178           - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
 179           - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
 180           - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).
 181           - "Crusoe" for the Transmeta Crusoe series.
 182           - "Efficeon" for the Transmeta Efficeon series.
 183           - "Winchip-C6" for original IDT Winchip.
 184           - "Winchip-2" for IDT Winchip 2.
 185           - "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
 186           - "MediaGX/Geode" for Cyrix MediaGX aka Geode.
 187           - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
 188           - "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
 189
 190           If you don't know what to do, choose "386".
 191
 192 config M486
 193         bool "486"
 194         help
 195           Select this for a 486 series processor, either Intel or one of the
 196           compatible processors from AMD, Cyrix, IBM, or Intel.  Includes DX,
 197           DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
 198           U5S.
 199
 200 config M586
 201         bool "586/K5/5x86/6x86/6x86MX"
 202         help
 203           Select this for an 586 or 686 series processor such as the AMD K5,
 204           the Cyrix 5x86, 6x86 and 6x86MX.  This choice does not
 205           assume the RDTSC (Read Time Stamp Counter) instruction.
 206
 207 config M586TSC
 208         bool "Pentium-Classic"
 209         help
 210           Select this for a Pentium Classic processor with the RDTSC (Read
 211           Time Stamp Counter) instruction for benchmarking.
 212
 213 config M586MMX
 214         bool "Pentium-MMX"
 215         help
 216           Select this for a Pentium with the MMX graphics/multimedia
 217           extended instructions.
 218
 219 config M686
 220         bool "Pentium-Pro"
 221         help
 222           Select this for Intel Pentium Pro chips.  This enables the use of
 223           Pentium Pro extended instructions, and disables the init-time guard
 224           against the f00f bug found in earlier Pentiums.
 225
 226 config MPENTIUMII
 227         bool "Pentium-II/Celeron(pre-Coppermine)"
 228         help
 229           Select this for Intel chips based on the Pentium-II and
 230           pre-Coppermine Celeron core.  This option enables an unaligned
 231           copy optimization, compiles the kernel with optimization flags
 232           tailored for the chip, and applies any applicable Pentium Pro
 233           optimizations.
 234
 235 config MPENTIUMIII
 236         bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
 237         help
 238           Select this for Intel chips based on the Pentium-III and
 239           Celeron-Coppermine core.  This option enables use of some
 240           extended prefetch instructions in addition to the Pentium II
 241           extensions.
 242
 243 config MPENTIUMM
 244         bool "Pentium M"
 245         help
 246           Select this for Intel Pentium M (not Pentium-4 M)
 247           notebook chips.
 248
 249 config MPENTIUM4
 250         bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/Xeon"
 251         help
 252           Select this for Intel Pentium 4 chips.  This includes the
 253           Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M
 254           (not Pentium M) chips.  This option enables compile flags
 255           optimized for the chip, uses the correct cache shift, and
 256           applies any applicable Pentium III optimizations.
 257
 258 config MK6
 259         bool "K6/K6-II/K6-III"
 260         help
 261           Select this for an AMD K6-family processor.  Enables use of
 262           some extended instructions, and passes appropriate optimization
 263           flags to GCC.
 264
 265 config MK7
 266         bool "Athlon/Duron/K7"
 267         help
 268           Select this for an AMD Athlon K7-family processor.  Enables use of
 269           some extended instructions, and passes appropriate optimization
 270           flags to GCC.
 271
 272 config MK8
 273         bool "Opteron/Athlon64/Hammer/K8"
 274         help
 275           Select this for an AMD Opteron or Athlon64 Hammer-family processor.  Enables
 276           use of some extended instructions, and passes appropriate optimization
 277           flags to GCC.
 278
 279 config MCRUSOE
 280         bool "Crusoe"
 281         help
 282           Select this for a Transmeta Crusoe processor.  Treats the processor
 283           like a 586 with TSC, and sets some GCC optimization flags (like a
 284           Pentium Pro with no alignment requirements).
 285
 286 config MEFFICEON
 287         bool "Efficeon"
 288         help
 289           Select this for a Transmeta Efficeon processor.
 290
 291 config MWINCHIPC6
 292         bool "Winchip-C6"
 293         help
 294           Select this for an IDT Winchip C6 chip.  Linux and GCC
 295           treat this chip as a 586TSC with some extended instructions
 296           and alignment requirements.
 297
 298 config MWINCHIP2
 299         bool "Winchip-2"
 300         help
 301           Select this for an IDT Winchip-2.  Linux and GCC
 302           treat this chip as a 586TSC with some extended instructions
 303           and alignment requirements.
 304
 305 config MWINCHIP3D
 306         bool "Winchip-2A/Winchip-3"
 307         help
 308           Select this for an IDT Winchip-2A or 3.  Linux and GCC
 309           treat this chip as a 586TSC with some extended instructions
 310           and alignment reqirements.  Also enable out of order memory
 311           stores for this CPU, which can increase performance of some
 312           operations.
 313
 314 config MGEODE
 315         bool "MediaGX/Geode"
 316         help
 317           Select this for a Cyrix MediaGX aka Geode chip. Linux and GCC
 318           treat this chip as a 586TSC with some extended instructions
 319           and alignment reqirements.
 320
 321 config MCYRIXIII
 322         bool "CyrixIII/VIA-C3"
 323         help
 324           Select this for a Cyrix III or C3 chip.  Presently Linux and GCC
 325           treat this chip as a generic 586. Whilst the CPU is 686 class,
 326           it lacks the cmov extension which gcc assumes is present when
 327           generating 686 code.
 328           Note that Nehemiah (Model 9) and above will not boot with this
 329           kernel due to them lacking the 3DNow! instructions used in earlier
 330           incarnations of the CPU.
 331
 332 config MVIAC3_2
 333         bool "VIA C3-2 (Nehemiah)"
 334         help
 335           Select this for a VIA C3 "Nehemiah". Selecting this enables usage
 336           of SSE and tells gcc to treat the CPU as a 686.
 337           Note, this kernel will not boot on older (pre model 9) C3s.
 338
 339 endchoice
 340
 341 config X86_GENERIC
 342        bool "Generic x86 support"
 343        help
 344           Instead of just including optimizations for the selected
 345           x86 variant (e.g. PII, Crusoe or Athlon), include some more
 346           generic optimizations as well. This will make the kernel
 347           perform better on x86 CPUs other than that selected.
 348
 349           This is really intended for distributors who need more
 350           generic optimizations.
 351
 352 endif
 353
 354 #
 355 # Define implied options from the CPU selection here
 356 #
 357 config X86_CMPXCHG
 358         bool
 359         depends on !M386
 360         default y
 361
 362 config X86_XADD
 363         bool
 364         depends on !M386
 365         default y
 366
 367 config X86_L1_CACHE_SHIFT
 368         int
 369         default "7" if MPENTIUM4 || X86_GENERIC
 370         default "4" if X86_ELAN || M486 || M386
 371         default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE
 372         default "6" if MK7 || MK8 || MPENTIUMM
 373
 374 config RWSEM_GENERIC_SPINLOCK
 375         bool
 376         depends on M386
 377         default y
 378
 379 config RWSEM_XCHGADD_ALGORITHM
 380         bool
 381         depends on !M386
 382         default y
 383
 384 config GENERIC_CALIBRATE_DELAY
 385         bool
 386         default y
 387
 388 config X86_PPRO_FENCE
 389         bool
 390         depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODE
 391         default y
 392
 393 config X86_F00F_BUG
 394         bool
 395         depends on M586MMX || M586TSC || M586 || M486 || M386
 396         default y
 397
 398 config X86_WP_WORKS_OK
 399         bool
 400         depends on !M386
 401         default y
 402
 403 config X86_INVLPG
 404         bool
 405         depends on !M386
 406         default y
 407
 408 config X86_BSWAP
 409         bool
 410         depends on !M386
 411         default y
 412
 413 config X86_POPAD_OK
 414         bool
 415         depends on !M386
 416         default y
 417
 418 config X86_ALIGNMENT_16
 419         bool
 420         depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODE
 421         default y
 422
 423 config X86_GOOD_APIC
 424         bool
 425         depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON
 426         default y
 427
 428 config X86_INTEL_USERCOPY
 429         bool
 430         depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON
 431         default y
 432
 433 config X86_USE_PPRO_CHECKSUM
 434         bool
 435         depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON
 436         default y
 437
 438 config X86_USE_3DNOW
 439         bool
 440         depends on MCYRIXIII || MK7
 441         default y
 442
 443 config X86_OOSTORE
 444         bool
 445         depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MGEODE) && MTRR
 446         default y
 447
 448 config HPET_TIMER
 449         bool "HPET Timer Support"
 450         help
 451           This enables the use of the HPET for the kernel's internal timer.
 452           HPET is the next generation timer replacing legacy 8254s.
 453           You can safely choose Y here.  However, HPET will only be
 454           activated if the platform and the BIOS support this feature.
 455           Otherwise the 8254 will be used for timing services.
 456
 457           Choose N to continue using the legacy 8254 timer.
 458
 459 config HPET_EMULATE_RTC
 460         bool "Provide RTC interrupt"
 461         depends on HPET_TIMER && RTC=y
 462
 463 config SMP
 464         bool "Symmetric multi-processing support"
 465         ---help---
 466           This enables support for systems with more than one CPU. If you have
 467           a system with only one CPU, like most personal computers, say N. If
 468           you have a system with more than one CPU, say Y.
 469
 470           If you say N here, the kernel will run on single and multiprocessor
 471           machines, but will use only one CPU of a multiprocessor machine. If
 472           you say Y here, the kernel will run on many, but not all,
 473           singleprocessor machines. On a singleprocessor machine, the kernel
 474           will run faster if you say N here.
 475
 476           Note that if you say Y here and choose architecture "586" or
 477           "Pentium" under "Processor family", the kernel will not work on 486
 478           architectures. Similarly, multiprocessor kernels for the "PPro"
 479           architecture may not work on all Pentium based boards.
 480
 481           People using multiprocessor machines who say Y here should also say
 482           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 483           Management" code will be disabled if you say Y here.
 484
 485           See also the <file:Documentation/smp.txt>,
 486           <file:Documentation/i386/IO-APIC.txt>,
 487           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 488           <http://www.tldp.org/docs.html#howto>.
 489
 490           If you don't know what to do here, say N.
 491
 492 config NR_CPUS
 493         int "Maximum number of CPUs (2-255)"
 494         range 2 255
 495         depends on SMP
 496         default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
 497         default "8"
 498         help
 499           This allows you to specify the maximum number of CPUs which this
 500           kernel will support.  The maximum supported value is 255 and the
 501           minimum value which makes sense is 2.
 502
 503           This is purely to save memory - each supported CPU adds
 504           approximately eight kilobytes to the kernel image.
 505
 506 config SCHED_SMT
 507         bool "SMT (Hyperthreading) scheduler support"
 508         depends on SMP
 509         default off
 510         help
 511           SMT scheduler support improves the CPU scheduler's decision making
 512           when dealing with Intel Pentium 4 chips with HyperThreading at a
 513           cost of slightly increased overhead in some places. If unsure say
 514           N here.
 515
 516 config PREEMPT
 517         bool "Preemptible Kernel"
 518         help
 519           This option reduces the latency of the kernel when reacting to
 520           real-time or interactive events by allowing a low priority process to
 521           be preempted even if it is in kernel mode executing a system call.
 522           This allows applications to run more reliably even when the system is
 523           under load.
 524
 525           Say Y here if you are building a kernel for a desktop, embedded
 526           or real-time system.  Say N if you are unsure.
 527
 528 config PREEMPT_BKL
 529         bool "Preempt The Big Kernel Lock"
 530         depends on PREEMPT
 531         default y
 532         help
 533           This option reduces the latency of the kernel by making the
 534           big kernel lock preemptible.
 535
 536           Say Y here if you are building a kernel for a desktop system.
 537           Say N if you are unsure.
 538
 539 config X86_UP_APIC
 540         bool "Local APIC support on uniprocessors"
 541         depends on !SMP && !(X86_VISWS || X86_VOYAGER)
 542         help
 543           A local APIC (Advanced Programmable Interrupt Controller) is an
 544           integrated interrupt controller in the CPU. If you have a single-CPU
 545           system which has a processor with a local APIC, you can say Y here to
 546           enable and use it. If you say Y here even though your machine doesn't
 547           have a local APIC, then the kernel will still run with no slowdown at
 548           all. The local APIC supports CPU-generated self-interrupts (timer,
 549           performance counters), and the NMI watchdog which detects hard
 550           lockups.
 551
 552 config X86_UP_IOAPIC
 553         bool "IO-APIC support on uniprocessors"
 554         depends on X86_UP_APIC
 555         help
 556           An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
 557           SMP-capable replacement for PC-style interrupt controllers. Most
 558           SMP systems and many recent uniprocessor systems have one.
 559
 560           If you have a single-CPU system with an IO-APIC, you can say Y here
 561           to use it. If you say Y here even though your machine doesn't have
 562           an IO-APIC, then the kernel will still run with no slowdown at all.
 563
 564 config X86_LOCAL_APIC
 565         bool
 566         depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER)
 567         default y
 568
 569 config X86_IO_APIC
 570         bool
 571         depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER))
 572         default y
 573
 574 config X86_VISWS_APIC
 575         bool
 576         depends on X86_VISWS
 577         default y
 578
 579 config X86_TSC
 580         bool
 581         depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODE) && !X86_NUMAQ
 582         default y
 583
 584 config X86_MCE
 585         bool "Machine Check Exception"
 586         depends on !X86_VOYAGER
 587         ---help---
 588           Machine Check Exception support allows the processor to notify the
 589           kernel if it detects a problem (e.g. overheating, component failure).
 590           The action the kernel takes depends on the severity of the problem,
 591           ranging from a warning message on the console, to halting the machine.
 592           Your processor must be a Pentium or newer to support this - check the
 593           flags in /proc/cpuinfo for mce.  Note that some older Pentium systems
 594           have a design flaw which leads to false MCE events - hence MCE is
 595           disabled on all P5 processors, unless explicitly enabled with "mce"
 596           as a boot argument.  Similarly, if MCE is built in and creates a
 597           problem on some new non-standard machine, you can boot with "nomce"
 598           to disable it.  MCE support simply ignores non-MCE processors like
 599           the 386 and 486, so nearly everyone can say Y here.
 600
 601 config X86_MCE_NONFATAL
 602         tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4"
 603         depends on X86_MCE
 604         help
 605           Enabling this feature starts a timer that triggers every 5 seconds which
 606           will look at the machine check registers to see if anything happened.
 607           Non-fatal problems automatically get corrected (but still logged).
 608           Disable this if you don't want to see these messages.
 609           Seeing the messages this option prints out may be indicative of dying hardware,
 610           or out-of-spec (ie, overclocked) hardware.
 611           This option only does something on certain CPUs.
 612           (AMD Athlon/Duron and Intel Pentium 4)
 613
 614 config X86_MCE_P4THERMAL
 615         bool "check for P4 thermal throttling interrupt."
 616         depends on X86_MCE && (X86_UP_APIC || SMP) && !X86_VISWS
 617         help
 618           Enabling this feature will cause a message to be printed when the P4
 619           enters thermal throttling.
 620
 621 config TOSHIBA
 622         tristate "Toshiba Laptop support"
 623         ---help---
 624           This adds a driver to safely access the System Management Mode of
 625           the CPU on Toshiba portables with a genuine Toshiba BIOS. It does
 626           not work on models with a Phoenix BIOS. The System Management Mode
 627           is used to set the BIOS and power saving options on Toshiba portables.
 628
 629           For information on utilities to make use of this driver see the
 630           Toshiba Linux utilities web site at:
 631           <http://www.buzzard.org.uk/toshiba/>.
 632
 633           Say Y if you intend to run this kernel on a Toshiba portable.
 634           Say N otherwise.
 635
 636 config I8K
 637         tristate "Dell laptop support"
 638         ---help---
 639           This adds a driver to safely access the System Management Mode
 640           of the CPU on the Dell Inspiron 8000. The System Management Mode
 641           is used to read cpu temperature and cooling fan status and to
 642           control the fans on the I8K portables.
 643
 644           This driver has been tested only on the Inspiron 8000 but it may
 645           also work with other Dell laptops. You can force loading on other
 646           models by passing the parameter `force=1' to the module. Use at
 647           your own risk.
 648
 649           For information on utilities to make use of this driver see the
 650           I8K Linux utilities web site at:
 651           <http://people.debian.org/~dz/i8k/>
 652
 653           Say Y if you intend to run this kernel on a Dell Inspiron 8000.
 654           Say N otherwise.
 655
 656 config X86_REBOOTFIXUPS
 657         bool "Enable X86 board specific fixups for reboot"
 658         depends on X86
 659         default n
 660         ---help---
 661           This enables chipset and/or board specific fixups to be done
 662           in order to get reboot to work correctly. This is only needed on
 663           some combinations of hardware and BIOS. The symptom, for which
 664           this config is intended, is when reboot ends with a stalled/hung
 665           system.
 666
 667           Currently, the only fixup is for the Geode GX1/CS5530A/TROM2.1.
 668           combination.
 669
 670           Say Y if you want to enable the fixup. Currently, it's safe to
 671           enable this option even if you don't need it.
 672           Say N otherwise.
 673
 674 config MICROCODE
 675         tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
 676         ---help---
 677           If you say Y here and also to "/dev file system support" in the
 678           'File systems' section, you will be able to update the microcode on
 679           Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II,
 680           Pentium III, Pentium 4, Xeon etc.  You will obviously need the
 681           actual microcode binary data itself which is not shipped with the
 682           Linux kernel.
 683
 684           For latest news and information on obtaining all the required
 685           ingredients for this driver, check:
 686           <http://www.urbanmyth.org/microcode/>.
 687
 688           To compile this driver as a module, choose M here: the
 689           module will be called microcode.
 690
 691 config X86_MSR
 692         tristate "/dev/cpu/*/msr - Model-specific register support"
 693         help
 694           This device gives privileged processes access to the x86
 695           Model-Specific Registers (MSRs).  It is a character device with
 696           major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
 697           MSR accesses are directed to a specific CPU on multi-processor
 698           systems.
 699
 700 config X86_CPUID
 701         tristate "/dev/cpu/*/cpuid - CPU information support"
 702         help
 703           This device gives processes access to the x86 CPUID instruction to
 704           be executed on a specific processor.  It is a character device
 705           with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
 706           /dev/cpu/31/cpuid.
 707
 708 source "drivers/firmware/Kconfig"
 709
 710 choice
 711         prompt "High Memory Support"
 712         default NOHIGHMEM
 713
 714 config NOHIGHMEM
 715         bool "off"
 716         ---help---
 717           Linux can use up to 64 Gigabytes of physical memory on x86 systems.
 718           However, the address space of 32-bit x86 processors is only 4
 719           Gigabytes large. That means that, if you have a large amount of
 720           physical memory, not all of it can be "permanently mapped" by the
 721           kernel. The physical memory that's not permanently mapped is called
 722           "high memory".
 723
 724           If you are compiling a kernel which will never run on a machine with
 725           more than 1 Gigabyte total physical RAM, answer "off" here (default
 726           choice and suitable for most users). This will result in a "3GB/1GB"
 727           split: 3GB are mapped so that each process sees a 3GB virtual memory
 728           space and the remaining part of the 4GB virtual memory space is used
 729           by the kernel to permanently map as much physical memory as
 730           possible.
 731
 732           If the machine has between 1 and 4 Gigabytes physical RAM, then
 733           answer "4GB" here.
 734
 735           If more than 4 Gigabytes is used then answer "64GB" here. This
 736           selection turns Intel PAE (Physical Address Extension) mode on.
 737           PAE implements 3-level paging on IA32 processors. PAE is fully
 738           supported by Linux, PAE mode is implemented on all recent Intel
 739           processors (Pentium Pro and better). NOTE: If you say "64GB" here,
 740           then the kernel will not boot on CPUs that don't support PAE!
 741
 742           The actual amount of total physical memory will either be
 743           auto detected or can be forced by using a kernel command line option
 744           such as "mem=256M". (Try "man bootparam" or see the documentation of
 745           your boot loader (lilo or loadlin) about how to pass options to the
 746           kernel at boot time.)
 747
 748           If unsure, say "off".
 749
 750 config HIGHMEM4G
 751         bool "4GB"
 752         help
 753           Select this if you have a 32-bit processor and between 1 and 4
 754           gigabytes of physical RAM.
 755
 756 config HIGHMEM64G
 757         bool "64GB"
 758         help
 759           Select this if you have a 32-bit processor and more than 4
 760           gigabytes of physical RAM.
 761
 762 endchoice
 763
 764 config HIGHMEM
 765         bool
 766         depends on HIGHMEM64G || HIGHMEM4G
 767         default y
 768
 769 config X86_PAE
 770         bool
 771         depends on HIGHMEM64G
 772         default y
 773
 774 # Common NUMA Features
 775 config NUMA
 776         bool "Numa Memory Allocation and Scheduler Support"
 777         depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH || (X86_SUMMIT && ACPI))
 778         default n if X86_PC
 779         default y if (X86_NUMAQ || X86_SUMMIT)
 780
 781 # Need comments to help the hapless user trying to turn on NUMA support
 782 comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support"
 783         depends on X86_NUMAQ && (!HIGHMEM64G || !SMP)
 784
 785 comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
 786         depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
 787
 788 config DISCONTIGMEM
 789         bool
 790         depends on NUMA
 791         default y
 792
 793 config HAVE_ARCH_BOOTMEM_NODE
 794         bool
 795         depends on NUMA
 796         default y
 797
 798 config HAVE_MEMORY_PRESENT
 799         bool
 800         depends on DISCONTIGMEM
 801         default y
 802
 803 config NEED_NODE_MEMMAP_SIZE
 804         bool
 805         depends on DISCONTIGMEM
 806         default y
 807
 808 config HIGHPTE
 809         bool "Allocate 3rd-level pagetables from highmem"
 810         depends on HIGHMEM4G || HIGHMEM64G
 811         help
 812           The VM uses one page table entry for each page of physical memory.
 813           For systems with a lot of RAM, this can be wasteful of precious
 814           low memory.  Setting this option will put user-space page table
 815           entries in high memory.
 816
 817 config MATH_EMULATION
 818         bool "Math emulation"
 819         ---help---
 820           Linux can emulate a math coprocessor (used for floating point
 821           operations) if you don't have one. 486DX and Pentium processors have
 822           a math coprocessor built in, 486SX and 386 do not, unless you added
 823           a 487DX or 387, respectively. (The messages during boot time can
 824           give you some hints here ["man dmesg"].) Everyone needs either a
 825           coprocessor or this emulation.
 826
 827           If you don't have a math coprocessor, you need to say Y here; if you
 828           say Y here even though you have a coprocessor, the coprocessor will
 829           be used nevertheless. (This behavior can be changed with the kernel
 830           command line option "no387", which comes handy if your coprocessor
 831           is broken. Try "man bootparam" or see the documentation of your boot
 832           loader (lilo or loadlin) about how to pass options to the kernel at
 833           boot time.) This means that it is a good idea to say Y here if you
 834           intend to use this kernel on different machines.
 835
 836           More information about the internals of the Linux math coprocessor
 837           emulation can be found in <file:arch/i386/math-emu/README>.
 838
 839           If you are not sure, say Y; apart from resulting in a 66 KB bigger
 840           kernel, it won't hurt.
 841
 842 config MTRR
 843         bool "MTRR (Memory Type Range Register) support"
 844         ---help---
 845           On Intel P6 family processors (Pentium Pro, Pentium II and later)
 846           the Memory Type Range Registers (MTRRs) may be used to control
 847           processor access to memory ranges. This is most useful if you have
 848           a video (VGA) card on a PCI or AGP bus. Enabling write-combining
 849           allows bus write transfers to be combined into a larger transfer
 850           before bursting over the PCI/AGP bus. This can increase performance
 851           of image write operations 2.5 times or more. Saying Y here creates a
 852           /proc/mtrr file which may be used to manipulate your processor's
 853           MTRRs. Typically the X server should use this.
 854
 855           This code has a reasonably generic interface so that similar
 856           control registers on other processors can be easily supported
 857           as well:
 858
 859           The Cyrix 6x86, 6x86MX and M II processors have Address Range
 860           Registers (ARRs) which provide a similar functionality to MTRRs. For
 861           these, the ARRs are used to emulate the MTRRs.
 862           The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
 863           MTRRs. The Centaur C6 (WinChip) has 8 MCRs, allowing
 864           write-combining. All of these processors are supported by this code
 865           and it makes sense to say Y here if you have one of them.
 866
 867           Saying Y here also fixes a problem with buggy SMP BIOSes which only
 868           set the MTRRs for the boot CPU and not for the secondary CPUs. This
 869           can lead to all sorts of problems, so it's good to say Y here.
 870
 871           You can safely say Y even if your machine doesn't have MTRRs, you'll
 872           just add about 9 KB to your kernel.
 873
 874           See <file:Documentation/mtrr.txt> for more information.
 875
 876 config EFI
 877         bool "Boot from EFI support (EXPERIMENTAL)"
 878         depends on ACPI
 879         default n
 880         ---help---
 881         This enables the the kernel to boot on EFI platforms using
 882         system configuration information passed to it from the firmware.
 883         This also enables the kernel to use any EFI runtime services that are
 884         available (such as the EFI variable services).
 885
 886         This option is only useful on systems that have EFI firmware
 887         and will result in a kernel image that is ~8k larger.  In addition,
 888         you must use the latest ELILO loader available at
 889         <http://elilo.sourceforge.net> in order to take advantage of
 890         kernel initialization using EFI information (neither GRUB nor LILO know
 891         anything about EFI).  However, even with this option, the resultant
 892         kernel should continue to boot on existing non-EFI platforms.
 893
 894 config IRQBALANCE
 895         bool "Enable kernel irq balancing"
 896         depends on SMP && X86_IO_APIC
 897         default y
 898         help
 899           The default yes will allow the kernel to do irq load balancing.
 900           Saying no will keep the kernel from doing irq load balancing.
 901
 902 config HAVE_DEC_LOCK
 903         bool
 904         depends on (SMP || PREEMPT) && X86_CMPXCHG
 905         default y
 906
 907 # turning this on wastes a bunch of space.
 908 # Summit needs it only when NUMA is on
 909 config BOOT_IOREMAP
 910         bool
 911         depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI))
 912         default y
 913
 914 config REGPARM
 915         bool "Use register arguments (EXPERIMENTAL)"
 916         depends on EXPERIMENTAL
 917         default n
 918         help
 919         Compile the kernel with -mregparm=3. This uses a different ABI
 920         and passes the first three arguments of a function call in registers.
 921         This will probably break binary only modules.
 922
 923         This feature is only enabled for gcc-3.0 and later - earlier compilers
 924         generate incorrect output with certain kernel constructs when
 925         -mregparm=3 is used.
 926
 927 config SECCOMP
 928         bool "Enable seccomp to safely compute untrusted bytecode"
 929         depends on PROC_FS
 930         default y
 931         help
 932           This kernel feature is useful for number crunching applications
 933           that may need to compute untrusted bytecode during their
 934           execution. By using pipes or other transports made available to
 935           the process as file descriptors supporting the read/write
 936           syscalls, it's possible to isolate those applications in
 937           their own address space using seccomp. Once seccomp is
 938           enabled via /proc/<pid>/seccomp, it cannot be disabled
 939           and the task is only allowed to execute a few safe syscalls
 940           defined by each seccomp mode.
 941
 942           If unsure, say Y. Only embedded should say N here.
 943
 944 endmenu
 945
 946
 947 menu "Power management options (ACPI, APM)"
 948         depends on !X86_VOYAGER
 949
 950 source kernel/power/Kconfig
 951
 952 source "drivers/acpi/Kconfig"
 953
 954 menu "APM (Advanced Power Management) BIOS Support"
 955 depends on PM && !X86_VISWS
 956
 957 config APM
 958         tristate "APM (Advanced Power Management) BIOS support"
 959         depends on PM
 960         ---help---
 961           APM is a BIOS specification for saving power using several different
 962           techniques. This is mostly useful for battery powered laptops with
 963           APM compliant BIOSes. If you say Y here, the system time will be
 964           reset after a RESUME operation, the /proc/apm device will provide
 965           battery status information, and user-space programs will receive
 966           notification of APM "events" (e.g. battery status change).
 967
 968           If you select "Y" here, you can disable actual use of the APM
 969           BIOS by passing the "apm=off" option to the kernel at boot time.
 970
 971           Note that the APM support is almost completely disabled for
 972           machines with more than one CPU.
 973
 974           In order to use APM, you will need supporting software. For location
 975           and more information, read <file:Documentation/pm.txt> and the
 976           Battery Powered Linux mini-HOWTO, available from
 977           <http://www.tldp.org/docs.html#howto>.
 978
 979           This driver does not spin down disk drives (see the hdparm(8)
 980           manpage ("man 8 hdparm") for that), and it doesn't turn off
 981           VESA-compliant "green" monitors.
 982
 983           This driver does not support the TI 4000M TravelMate and the ACER
 984           486/DX4/75 because they don't have compliant BIOSes. Many "green"
 985           desktop machines also don't have compliant BIOSes, and this driver
 986           may cause those machines to panic during the boot phase.
 987
 988           Generally, if you don't have a battery in your machine, there isn't
 989           much point in using this driver and you should say N. If you get
 990           random kernel OOPSes or reboots that don't seem to be related to
 991           anything, try disabling/enabling this option (or disabling/enabling
 992           APM in your BIOS).
 993
 994           Some other things you should try when experiencing seemingly random,
 995           "weird" problems:
 996
 997           1) make sure that you have enough swap space and that it is
 998           enabled.
 999           2) pass the "no-hlt" option to the kernel
1000           3) switch on floating point emulation in the kernel and pass
1001           the "no387" option to the kernel
1002           4) pass the "floppy=nodma" option to the kernel
1003           5) pass the "mem=4M" option to the kernel (thereby disabling
1004           all but the first 4 MB of RAM)
1005           6) make sure that the CPU is not over clocked.
1006           7) read the sig11 FAQ at <http://www.bitwizard.nl/sig11/>
1007           8) disable the cache from your BIOS settings
1008           9) install a fan for the video card or exchange video RAM
1009           10) install a better fan for the CPU
1010           11) exchange RAM chips
1011           12) exchange the motherboard.
1012
1013           To compile this driver as a module, choose M here: the
1014           module will be called apm.
1015
1016 config APM_IGNORE_USER_SUSPEND
1017         bool "Ignore USER SUSPEND"
1018         depends on APM
1019         help
1020           This option will ignore USER SUSPEND requests. On machines with a
1021           compliant APM BIOS, you want to say N. However, on the NEC Versa M
1022           series notebooks, it is necessary to say Y because of a BIOS bug.
1023
1024 config APM_DO_ENABLE
1025         bool "Enable PM at boot time"
1026         depends on APM
1027         ---help---
1028           Enable APM features at boot time. From page 36 of the APM BIOS
1029           specification: "When disabled, the APM BIOS does not automatically
1030           power manage devices, enter the Standby State, enter the Suspend
1031           State, or take power saving steps in response to CPU Idle calls."
1032           This driver will make CPU Idle calls when Linux is idle (unless this
1033           feature is turned off -- see "Do CPU IDLE calls", below). This
1034           should always save battery power, but more complicated APM features
1035           will be dependent on your BIOS implementation. You may need to turn
1036           this option off if your computer hangs at boot time when using APM
1037           support, or if it beeps continuously instead of suspending. Turn
1038           this off if you have a NEC UltraLite Versa 33/C or a Toshiba
1039           T400CDT. This is off by default since most machines do fine without
1040           this feature.
1041
1042 config APM_CPU_IDLE
1043         bool "Make CPU Idle calls when idle"
1044         depends on APM
1045         help
1046           Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
1047           On some machines, this can activate improved power savings, such as
1048           a slowed CPU clock rate, when the machine is idle. These idle calls
1049           are made after the idle loop has run for some length of time (e.g.,
1050           333 mS). On some machines, this will cause a hang at boot time or
1051           whenever the CPU becomes idle. (On machines with more than one CPU,
1052           this option does nothing.)
1053
1054 config APM_DISPLAY_BLANK
1055         bool "Enable console blanking using APM"
1056         depends on APM
1057         help
1058           Enable console blanking using the APM. Some laptops can use this to
1059           turn off the LCD backlight when the screen blanker of the Linux
1060           virtual console blanks the screen. Note that this is only used by
1061           the virtual console screen blanker, and won't turn off the backlight
1062           when using the X Window system. This also doesn't have anything to
1063           do with your VESA-compliant power-saving monitor. Further, this
1064           option doesn't work for all laptops -- it might not turn off your
1065           backlight at all, or it might print a lot of errors to the console,
1066           especially if you are using gpm.
1067
1068 config APM_RTC_IS_GMT
1069         bool "RTC stores time in GMT"
1070         depends on APM
1071         help
1072           Say Y here if your RTC (Real Time Clock a.k.a. hardware clock)
1073           stores the time in GMT (Greenwich Mean Time). Say N if your RTC
1074           stores localtime.
1075
1076           It is in fact recommended to store GMT in your RTC, because then you
1077           don't have to worry about daylight savings time changes. The only
1078           reason not to use GMT in your RTC is if you also run a broken OS
1079           that doesn't understand GMT.
1080
1081 config APM_ALLOW_INTS
1082         bool "Allow interrupts during APM BIOS calls"
1083         depends on APM
1084         help
1085           Normally we disable external interrupts while we are making calls to
1086           the APM BIOS as a measure to lessen the effects of a badly behaving
1087           BIOS implementation.  The BIOS should reenable interrupts if it
1088           needs to.  Unfortunately, some BIOSes do not -- especially those in
1089           many of the newer IBM Thinkpads.  If you experience hangs when you
1090           suspend, try setting this to Y.  Otherwise, say N.
1091
1092 config APM_REAL_MODE_POWER_OFF
1093         bool "Use real mode APM BIOS call to power off"
1094         depends on APM
1095         help
1096           Use real mode APM BIOS calls to switch off the computer. This is
1097           a work-around for a number of buggy BIOSes. Switch this option on if
1098           your computer crashes instead of powering off properly.
1099
1100 endmenu
1101
1102 source "arch/i386/kernel/cpu/cpufreq/Kconfig"
1103
1104 endmenu
1105
1106 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
1107
1108 config PCI
1109         bool "PCI support" if !X86_VISWS
1110         depends on !X86_VOYAGER
1111         default y if X86_VISWS
1112         help
1113           Find out whether you have a PCI motherboard. PCI is the name of a
1114           bus system, i.e. the way the CPU talks to the other stuff inside
1115           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1116           VESA. If you have PCI, say Y, otherwise N.
1117
1118           The PCI-HOWTO, available from
1119           <http://www.tldp.org/docs.html#howto>, contains valuable
1120           information about which PCI hardware does work under Linux and which
1121           doesn't.
1122
1123 choice
1124         prompt "PCI access mode"
1125         depends on PCI && !X86_VISWS
1126         default PCI_GOANY
1127         ---help---
1128           On PCI systems, the BIOS can be used to detect the PCI devices and
1129           determine their configuration. However, some old PCI motherboards
1130           have BIOS bugs and may crash if this is done. Also, some embedded
1131           PCI-based systems don't have any BIOS at all. Linux can also try to
1132           detect the PCI hardware directly without using the BIOS.
1133
1134           With this option, you can specify how Linux should detect the
1135           PCI devices. If you choose "BIOS", the BIOS will be used,
1136           if you choose "Direct", the BIOS won't be used, and if you
1137           choose "MMConfig", then PCI Express MMCONFIG will be used.
1138           If you choose "Any", the kernel will try MMCONFIG, then the
1139           direct access method and falls back to the BIOS if that doesn't
1140           work. If unsure, go with the default, which is "Any".
1141
1142 config PCI_GOBIOS
1143         bool "BIOS"
1144
1145 config PCI_GOMMCONFIG
1146         bool "MMConfig"
1147
1148 config PCI_GODIRECT
1149         bool "Direct"
1150
1151 config PCI_GOANY
1152         bool "Any"
1153
1154 endchoice
1155
1156 config PCI_BIOS
1157         bool
1158         depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
1159         default y
1160
1161 config PCI_DIRECT
1162         bool
1163         depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
1164         default y
1165
1166 config PCI_MMCONFIG
1167         bool
1168         depends on PCI && (PCI_GOMMCONFIG || (PCI_GOANY && ACPI))
1169         select ACPI_BOOT
1170         default y
1171
1172 source "drivers/pci/pcie/Kconfig"
1173
1174 source "drivers/pci/Kconfig"
1175
1176 config ISA_DMA_API
1177         bool
1178         default y
1179
1180 config ISA
1181         bool "ISA support"
1182         depends on !(X86_VOYAGER || X86_VISWS)
1183         help
1184           Find out whether you have ISA slots on your motherboard.  ISA is the
1185           name of a bus system, i.e. the way the CPU talks to the other stuff
1186           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1187           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1188           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1189
1190 config EISA
1191         bool "EISA support"
1192         depends on ISA
1193         ---help---
1194           The Extended Industry Standard Architecture (EISA) bus was
1195           developed as an open alternative to the IBM MicroChannel bus.
1196
1197           The EISA bus provided some of the features of the IBM MicroChannel
1198           bus while maintaining backward compatibility with cards made for
1199           the older ISA bus.  The EISA bus saw limited use between 1988 and
1200           1995 when it was made obsolete by the PCI bus.
1201
1202           Say Y here if you are building a kernel for an EISA-based machine.
1203
1204           Otherwise, say N.
1205
1206 source "drivers/eisa/Kconfig"
1207
1208 config MCA
1209         bool "MCA support" if !(X86_VISWS || X86_VOYAGER)
1210         default y if X86_VOYAGER
1211         help
1212           MicroChannel Architecture is found in some IBM PS/2 machines and
1213           laptops.  It is a bus system similar to PCI or ISA. See
1214           <file:Documentation/mca.txt> (and especially the web page given
1215           there) before attempting to build an MCA bus kernel.
1216
1217 source "drivers/mca/Kconfig"
1218
1219 config SCx200
1220         tristate "NatSemi SCx200 support"
1221         depends on !X86_VOYAGER
1222         help
1223           This provides basic support for the National Semiconductor SCx200
1224           processor.  Right now this is just a driver for the GPIO pins.
1225
1226           If you don't know what to do here, say N.
1227
1228           This support is also available as a module.  If compiled as a
1229           module, it will be called scx200.
1230
1231 source "drivers/pcmcia/Kconfig"
1232
1233 source "drivers/pci/hotplug/Kconfig"
1234
1235 endmenu
1236
1237 menu "Executable file formats"
1238
1239 source "fs/Kconfig.binfmt"
1240
1241 endmenu
1242
1243 source "drivers/Kconfig"
1244
1245 source "fs/Kconfig"
1246
1247 source "arch/i386/oprofile/Kconfig"
1248
1249 source "arch/i386/Kconfig.debug"
1250
1251 source "security/Kconfig"
1252
1253 source "crypto/Kconfig"
1254
1255 source "lib/Kconfig"
1256
1257 #
1258 # Use the generic interrupt handling code in kernel/irq/:
1259 #
1260 config GENERIC_HARDIRQS
1261         bool
1262         default y
1263
1264 config GENERIC_IRQ_PROBE
1265         bool
1266         default y
1267
1268 config X86_SMP
1269         bool
1270         depends on SMP && !X86_VOYAGER
1271         default y
1272
1273 config X86_HT
1274         bool
1275         depends on SMP && !(X86_VISWS || X86_VOYAGER)
1276         default y
1277
1278 config X86_BIOS_REBOOT
1279         bool
1280         depends on !(X86_VISWS || X86_VOYAGER)
1281         default y
1282
1283 config X86_TRAMPOLINE
1284         bool
1285         depends on X86_SMP || (X86_VOYAGER && SMP)
1286         default y
1287
1288 config PC
1289         bool
1290         depends on X86 && !EMBEDDED
1291         default y