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 NUMA
  72         help
  73           This option is used for getting Linux to run on a (IBM/Sequent) NUMA
  74           multiquad box. This changes the way that processors are bootstrapped,
  75           and uses Clustered Logical APIC addressing mode instead of Flat Logical.
  76           You will need a new lynxer.elf file to flash your firmware with - send
  77           email to <Martin.Bligh@us.ibm.com>.
  78
  79 config X86_SUMMIT
  80         bool "Summit/EXA (IBM x440)"
  81         depends on SMP
  82         help
  83           This option is needed for IBM systems that use the Summit/EXA chipset.
  84           In particular, it is needed for the x440.
  85
  86           If you don't have one of these computers, you should say N here.
  87
  88 config X86_BIGSMP
  89         bool "Support for other sub-arch SMP systems with more than 8 CPUs"
  90         depends on SMP
  91         help
  92           This option is needed for the systems that have more than 8 CPUs
  93           and if the system is not of any sub-arch type above.
  94
  95           If you don't have such a system, you should say N here.
  96
  97 config X86_VISWS
  98         bool "SGI 320/540 (Visual Workstation)"
  99         help
 100           The SGI Visual Workstation series is an IA32-based workstation
 101           based on SGI systems chips with some legacy PC hardware attached.
 102
 103           Say Y here to create a kernel to run on the SGI 320 or 540.
 104
 105           A kernel compiled for the Visual Workstation will not run on PCs
 106           and vice versa. See <file:Documentation/sgi-visws.txt> for details.
 107
 108 config X86_GENERICARCH
 109        bool "Generic architecture (Summit, bigsmp, ES7000, default)"
 110        depends on SMP
 111        help
 112           This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
 113           It is intended for a generic binary kernel.
 114
 115 config X86_ES7000
 116         bool "Support for Unisys ES7000 IA32 series"
 117         depends on SMP
 118         help
 119           Support for Unisys ES7000 systems.  Say 'Y' here if this kernel is
 120           supposed to run on an IA32-based Unisys ES7000 system.
 121           Only choose this option if you have such a system, otherwise you
 122           should say N here.
 123
 124 endchoice
 125
 126 config ACPI_SRAT
 127         bool
 128         default y
 129         depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
 130
 131 config X86_SUMMIT_NUMA
 132         bool
 133         default y
 134         depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
 135
 136 config X86_CYCLONE_TIMER
 137         bool
 138         default y
 139         depends on X86_SUMMIT || X86_GENERICARCH
 140
 141 config ES7000_CLUSTERED_APIC
 142         bool
 143         default y
 144         depends on SMP && X86_ES7000 && MPENTIUMIII
 145
 146 if !X86_ELAN
 147
 148 choice
 149         prompt "Processor family"
 150         default M686
 151
 152 config M386
 153         bool "386"
 154         ---help---
 155           This is the processor type of your CPU. This information is used for
 156           optimizing purposes. In order to compile a kernel that can run on
 157           all x86 CPU types (albeit not optimally fast), you can specify
 158           "386" here.
 159
 160           The kernel will not necessarily run on earlier architectures than
 161           the one you have chosen, e.g. a Pentium optimized kernel will run on
 162           a PPro, but not necessarily on a i486.
 163
 164           Here are the settings recommended for greatest speed:
 165           - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI
 166           486DLC/DLC2, UMC 486SX-S and NexGen Nx586.  Only "386" kernels
 167           will run on a 386 class machine.
 168           - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
 169           SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
 170           - "586" for generic Pentium CPUs lacking the TSC
 171           (time stamp counter) register.
 172           - "Pentium-Classic" for the Intel Pentium.
 173           - "Pentium-MMX" for the Intel Pentium MMX.
 174           - "Pentium-Pro" for the Intel Pentium Pro.
 175           - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
 176           - "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
 177           - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
 178           - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
 179           - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).
 180           - "Crusoe" for the Transmeta Crusoe series.
 181           - "Efficeon" for the Transmeta Efficeon series.
 182           - "Winchip-C6" for original IDT Winchip.
 183           - "Winchip-2" for IDT Winchip 2.
 184           - "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
 185           - "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
 186           - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
 187           - "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
 188
 189           If you don't know what to do, choose "386".
 190
 191 config M486
 192         bool "486"
 193         help
 194           Select this for a 486 series processor, either Intel or one of the
 195           compatible processors from AMD, Cyrix, IBM, or Intel.  Includes DX,
 196           DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
 197           U5S.
 198
 199 config M586
 200         bool "586/K5/5x86/6x86/6x86MX"
 201         help
 202           Select this for an 586 or 686 series processor such as the AMD K5,
 203           the Cyrix 5x86, 6x86 and 6x86MX.  This choice does not
 204           assume the RDTSC (Read Time Stamp Counter) instruction.
 205
 206 config M586TSC
 207         bool "Pentium-Classic"
 208         help
 209           Select this for a Pentium Classic processor with the RDTSC (Read
 210           Time Stamp Counter) instruction for benchmarking.
 211
 212 config M586MMX
 213         bool "Pentium-MMX"
 214         help
 215           Select this for a Pentium with the MMX graphics/multimedia
 216           extended instructions.
 217
 218 config M686
 219         bool "Pentium-Pro"
 220         help
 221           Select this for Intel Pentium Pro chips.  This enables the use of
 222           Pentium Pro extended instructions, and disables the init-time guard
 223           against the f00f bug found in earlier Pentiums.
 224
 225 config MPENTIUMII
 226         bool "Pentium-II/Celeron(pre-Coppermine)"
 227         help
 228           Select this for Intel chips based on the Pentium-II and
 229           pre-Coppermine Celeron core.  This option enables an unaligned
 230           copy optimization, compiles the kernel with optimization flags
 231           tailored for the chip, and applies any applicable Pentium Pro
 232           optimizations.
 233
 234 config MPENTIUMIII
 235         bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
 236         help
 237           Select this for Intel chips based on the Pentium-III and
 238           Celeron-Coppermine core.  This option enables use of some
 239           extended prefetch instructions in addition to the Pentium II
 240           extensions.
 241
 242 config MPENTIUMM
 243         bool "Pentium M"
 244         help
 245           Select this for Intel Pentium M (not Pentium-4 M)
 246           notebook chips.
 247
 248 config MPENTIUM4
 249         bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/Xeon"
 250         help
 251           Select this for Intel Pentium 4 chips.  This includes the
 252           Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M
 253           (not Pentium M) chips.  This option enables compile flags
 254           optimized for the chip, uses the correct cache shift, and
 255           applies any applicable Pentium III optimizations.
 256
 257 config MK6
 258         bool "K6/K6-II/K6-III"
 259         help
 260           Select this for an AMD K6-family processor.  Enables use of
 261           some extended instructions, and passes appropriate optimization
 262           flags to GCC.
 263
 264 config MK7
 265         bool "Athlon/Duron/K7"
 266         help
 267           Select this for an AMD Athlon K7-family processor.  Enables use of
 268           some extended instructions, and passes appropriate optimization
 269           flags to GCC.
 270
 271 config MK8
 272         bool "Opteron/Athlon64/Hammer/K8"
 273         help
 274           Select this for an AMD Opteron or Athlon64 Hammer-family processor.  Enables
 275           use of some extended instructions, and passes appropriate optimization
 276           flags to GCC.
 277
 278 config MCRUSOE
 279         bool "Crusoe"
 280         help
 281           Select this for a Transmeta Crusoe processor.  Treats the processor
 282           like a 586 with TSC, and sets some GCC optimization flags (like a
 283           Pentium Pro with no alignment requirements).
 284
 285 config MEFFICEON
 286         bool "Efficeon"
 287         help
 288           Select this for a Transmeta Efficeon processor.
 289
 290 config MWINCHIPC6
 291         bool "Winchip-C6"
 292         help
 293           Select this for an IDT Winchip C6 chip.  Linux and GCC
 294           treat this chip as a 586TSC with some extended instructions
 295           and alignment requirements.
 296
 297 config MWINCHIP2
 298         bool "Winchip-2"
 299         help
 300           Select this for an IDT Winchip-2.  Linux and GCC
 301           treat this chip as a 586TSC with some extended instructions
 302           and alignment requirements.
 303
 304 config MWINCHIP3D
 305         bool "Winchip-2A/Winchip-3"
 306         help
 307           Select this for an IDT Winchip-2A or 3.  Linux and GCC
 308           treat this chip as a 586TSC with some extended instructions
 309           and alignment reqirements.  Also enable out of order memory
 310           stores for this CPU, which can increase performance of some
 311           operations.
 312
 313 config MGEODEGX1
 314         bool "GeodeGX1"
 315         help
 316           Select this for a Geode GX1 (Cyrix MediaGX) chip.
 317
 318 config MCYRIXIII
 319         bool "CyrixIII/VIA-C3"
 320         help
 321           Select this for a Cyrix III or C3 chip.  Presently Linux and GCC
 322           treat this chip as a generic 586. Whilst the CPU is 686 class,
 323           it lacks the cmov extension which gcc assumes is present when
 324           generating 686 code.
 325           Note that Nehemiah (Model 9) and above will not boot with this
 326           kernel due to them lacking the 3DNow! instructions used in earlier
 327           incarnations of the CPU.
 328
 329 config MVIAC3_2
 330         bool "VIA C3-2 (Nehemiah)"
 331         help
 332           Select this for a VIA C3 "Nehemiah". Selecting this enables usage
 333           of SSE and tells gcc to treat the CPU as a 686.
 334           Note, this kernel will not boot on older (pre model 9) C3s.
 335
 336 endchoice
 337
 338 config X86_GENERIC
 339        bool "Generic x86 support"
 340        help
 341           Instead of just including optimizations for the selected
 342           x86 variant (e.g. PII, Crusoe or Athlon), include some more
 343           generic optimizations as well. This will make the kernel
 344           perform better on x86 CPUs other than that selected.
 345
 346           This is really intended for distributors who need more
 347           generic optimizations.
 348
 349 endif
 350
 351 #
 352 # Define implied options from the CPU selection here
 353 #
 354 config X86_CMPXCHG
 355         bool
 356         depends on !M386
 357         default y
 358
 359 config X86_XADD
 360         bool
 361         depends on !M386
 362         default y
 363
 364 config X86_L1_CACHE_SHIFT
 365         int
 366         default "7" if MPENTIUM4 || X86_GENERIC
 367         default "4" if X86_ELAN || M486 || M386
 368         default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODEGX1
 369         default "6" if MK7 || MK8 || MPENTIUMM
 370
 371 config RWSEM_GENERIC_SPINLOCK
 372         bool
 373         depends on M386
 374         default y
 375
 376 config RWSEM_XCHGADD_ALGORITHM
 377         bool
 378         depends on !M386
 379         default y
 380
 381 config GENERIC_CALIBRATE_DELAY
 382         bool
 383         default y
 384
 385 config X86_PPRO_FENCE
 386         bool
 387         depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
 388         default y
 389
 390 config X86_F00F_BUG
 391         bool
 392         depends on M586MMX || M586TSC || M586 || M486 || M386
 393         default y
 394
 395 config X86_WP_WORKS_OK
 396         bool
 397         depends on !M386
 398         default y
 399
 400 config X86_INVLPG
 401         bool
 402         depends on !M386
 403         default y
 404
 405 config X86_BSWAP
 406         bool
 407         depends on !M386
 408         default y
 409
 410 config X86_POPAD_OK
 411         bool
 412         depends on !M386
 413         default y
 414
 415 config X86_ALIGNMENT_16
 416         bool
 417         depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
 418         default y
 419
 420 config X86_GOOD_APIC
 421         bool
 422         depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON
 423         default y
 424
 425 config X86_INTEL_USERCOPY
 426         bool
 427         depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON
 428         default y
 429
 430 config X86_USE_PPRO_CHECKSUM
 431         bool
 432         depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON
 433         default y
 434
 435 config X86_USE_3DNOW
 436         bool
 437         depends on MCYRIXIII || MK7
 438         default y
 439
 440 config X86_OOSTORE
 441         bool
 442         depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
 443         default y
 444
 445 config HPET_TIMER
 446         bool "HPET Timer Support"
 447         help
 448           This enables the use of the HPET for the kernel's internal timer.
 449           HPET is the next generation timer replacing legacy 8254s.
 450           You can safely choose Y here.  However, HPET will only be
 451           activated if the platform and the BIOS support this feature.
 452           Otherwise the 8254 will be used for timing services.
 453
 454           Choose N to continue using the legacy 8254 timer.
 455
 456 config HPET_EMULATE_RTC
 457         bool "Provide RTC interrupt"
 458         depends on HPET_TIMER && RTC=y
 459
 460 config SMP
 461         bool "Symmetric multi-processing support"
 462         ---help---
 463           This enables support for systems with more than one CPU. If you have
 464           a system with only one CPU, like most personal computers, say N. If
 465           you have a system with more than one CPU, say Y.
 466
 467           If you say N here, the kernel will run on single and multiprocessor
 468           machines, but will use only one CPU of a multiprocessor machine. If
 469           you say Y here, the kernel will run on many, but not all,
 470           singleprocessor machines. On a singleprocessor machine, the kernel
 471           will run faster if you say N here.
 472
 473           Note that if you say Y here and choose architecture "586" or
 474           "Pentium" under "Processor family", the kernel will not work on 486
 475           architectures. Similarly, multiprocessor kernels for the "PPro"
 476           architecture may not work on all Pentium based boards.
 477
 478           People using multiprocessor machines who say Y here should also say
 479           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 480           Management" code will be disabled if you say Y here.
 481
 482           See also the <file:Documentation/smp.txt>,
 483           <file:Documentation/i386/IO-APIC.txt>,
 484           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 485           <http://www.tldp.org/docs.html#howto>.
 486
 487           If you don't know what to do here, say N.
 488
 489 config NR_CPUS
 490         int "Maximum number of CPUs (2-255)"
 491         range 2 255
 492         depends on SMP
 493         default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
 494         default "8"
 495         help
 496           This allows you to specify the maximum number of CPUs which this
 497           kernel will support.  The maximum supported value is 255 and the
 498           minimum value which makes sense is 2.
 499
 500           This is purely to save memory - each supported CPU adds
 501           approximately eight kilobytes to the kernel image.
 502
 503 config SCHED_SMT
 504         bool "SMT (Hyperthreading) scheduler support"
 505         depends on SMP
 506         default off
 507         help
 508           SMT scheduler support improves the CPU scheduler's decision making
 509           when dealing with Intel Pentium 4 chips with HyperThreading at a
 510           cost of slightly increased overhead in some places. If unsure say
 511           N here.
 512
 513 config PREEMPT
 514         bool "Preemptible Kernel"
 515         help
 516           This option reduces the latency of the kernel when reacting to
 517           real-time or interactive events by allowing a low priority process to
 518           be preempted even if it is in kernel mode executing a system call.
 519           This allows applications to run more reliably even when the system is
 520           under load.
 521
 522           Say Y here if you are building a kernel for a desktop, embedded
 523           or real-time system.  Say N if you are unsure.
 524
 525 config PREEMPT_BKL
 526         bool "Preempt The Big Kernel Lock"
 527         depends on PREEMPT
 528         default y
 529         help
 530           This option reduces the latency of the kernel by making the
 531           big kernel lock preemptible.
 532
 533           Say Y here if you are building a kernel for a desktop system.
 534           Say N if you are unsure.
 535
 536 config X86_UP_APIC
 537         bool "Local APIC support on uniprocessors"
 538         depends on !SMP && !(X86_VISWS || X86_VOYAGER)
 539         help
 540           A local APIC (Advanced Programmable Interrupt Controller) is an
 541           integrated interrupt controller in the CPU. If you have a single-CPU
 542           system which has a processor with a local APIC, you can say Y here to
 543           enable and use it. If you say Y here even though your machine doesn't
 544           have a local APIC, then the kernel will still run with no slowdown at
 545           all. The local APIC supports CPU-generated self-interrupts (timer,
 546           performance counters), and the NMI watchdog which detects hard
 547           lockups.
 548
 549 config X86_UP_IOAPIC
 550         bool "IO-APIC support on uniprocessors"
 551         depends on X86_UP_APIC
 552         help
 553           An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
 554           SMP-capable replacement for PC-style interrupt controllers. Most
 555           SMP systems and many recent uniprocessor systems have one.
 556
 557           If you have a single-CPU system with an IO-APIC, you can say Y here
 558           to use it. If you say Y here even though your machine doesn't have
 559           an IO-APIC, then the kernel will still run with no slowdown at all.
 560
 561 config X86_LOCAL_APIC
 562         bool
 563         depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER)
 564         default y
 565
 566 config X86_IO_APIC
 567         bool
 568         depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER))
 569         default y
 570
 571 config X86_VISWS_APIC
 572         bool
 573         depends on X86_VISWS
 574         default y
 575
 576 config X86_TSC
 577         bool
 578         depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1) && !X86_NUMAQ
 579         default y
 580
 581 config X86_MCE
 582         bool "Machine Check Exception"
 583         depends on !X86_VOYAGER
 584         ---help---
 585           Machine Check Exception support allows the processor to notify the
 586           kernel if it detects a problem (e.g. overheating, component failure).
 587           The action the kernel takes depends on the severity of the problem,
 588           ranging from a warning message on the console, to halting the machine.
 589           Your processor must be a Pentium or newer to support this - check the
 590           flags in /proc/cpuinfo for mce.  Note that some older Pentium systems
 591           have a design flaw which leads to false MCE events - hence MCE is
 592           disabled on all P5 processors, unless explicitly enabled with "mce"
 593           as a boot argument.  Similarly, if MCE is built in and creates a
 594           problem on some new non-standard machine, you can boot with "nomce"
 595           to disable it.  MCE support simply ignores non-MCE processors like
 596           the 386 and 486, so nearly everyone can say Y here.
 597
 598 config X86_MCE_NONFATAL
 599         tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4"
 600         depends on X86_MCE
 601         help
 602           Enabling this feature starts a timer that triggers every 5 seconds which
 603           will look at the machine check registers to see if anything happened.
 604           Non-fatal problems automatically get corrected (but still logged).
 605           Disable this if you don't want to see these messages.
 606           Seeing the messages this option prints out may be indicative of dying hardware,
 607           or out-of-spec (ie, overclocked) hardware.
 608           This option only does something on certain CPUs.
 609           (AMD Athlon/Duron and Intel Pentium 4)
 610
 611 config X86_MCE_P4THERMAL
 612         bool "check for P4 thermal throttling interrupt."
 613         depends on X86_MCE && (X86_UP_APIC || SMP) && !X86_VISWS
 614         help
 615           Enabling this feature will cause a message to be printed when the P4
 616           enters thermal throttling.
 617
 618 config TOSHIBA
 619         tristate "Toshiba Laptop support"
 620         ---help---
 621           This adds a driver to safely access the System Management Mode of
 622           the CPU on Toshiba portables with a genuine Toshiba BIOS. It does
 623           not work on models with a Phoenix BIOS. The System Management Mode
 624           is used to set the BIOS and power saving options on Toshiba portables.
 625
 626           For information on utilities to make use of this driver see the
 627           Toshiba Linux utilities web site at:
 628           <http://www.buzzard.org.uk/toshiba/>.
 629
 630           Say Y if you intend to run this kernel on a Toshiba portable.
 631           Say N otherwise.
 632
 633 config I8K
 634         tristate "Dell laptop support"
 635         ---help---
 636           This adds a driver to safely access the System Management Mode
 637           of the CPU on the Dell Inspiron 8000. The System Management Mode
 638           is used to read cpu temperature and cooling fan status and to
 639           control the fans on the I8K portables.
 640
 641           This driver has been tested only on the Inspiron 8000 but it may
 642           also work with other Dell laptops. You can force loading on other
 643           models by passing the parameter `force=1' to the module. Use at
 644           your own risk.
 645
 646           For information on utilities to make use of this driver see the
 647           I8K Linux utilities web site at:
 648           <http://people.debian.org/~dz/i8k/>
 649
 650           Say Y if you intend to run this kernel on a Dell Inspiron 8000.
 651           Say N otherwise.
 652
 653 config X86_REBOOTFIXUPS
 654         bool "Enable X86 board specific fixups for reboot"
 655         depends on X86
 656         default n
 657         ---help---
 658           This enables chipset and/or board specific fixups to be done
 659           in order to get reboot to work correctly. This is only needed on
 660           some combinations of hardware and BIOS. The symptom, for which
 661           this config is intended, is when reboot ends with a stalled/hung
 662           system.
 663
 664           Currently, the only fixup is for the Geode GX1/CS5530A/TROM2.1.
 665           combination.
 666
 667           Say Y if you want to enable the fixup. Currently, it's safe to
 668           enable this option even if you don't need it.
 669           Say N otherwise.
 670
 671 config MICROCODE
 672         tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
 673         ---help---
 674           If you say Y here and also to "/dev file system support" in the
 675           'File systems' section, you will be able to update the microcode on
 676           Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II,
 677           Pentium III, Pentium 4, Xeon etc.  You will obviously need the
 678           actual microcode binary data itself which is not shipped with the
 679           Linux kernel.
 680
 681           For latest news and information on obtaining all the required
 682           ingredients for this driver, check:
 683           <http://www.urbanmyth.org/microcode/>.
 684
 685           To compile this driver as a module, choose M here: the
 686           module will be called microcode.
 687
 688 config X86_MSR
 689         tristate "/dev/cpu/*/msr - Model-specific register support"
 690         help
 691           This device gives privileged processes access to the x86
 692           Model-Specific Registers (MSRs).  It is a character device with
 693           major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
 694           MSR accesses are directed to a specific CPU on multi-processor
 695           systems.
 696
 697 config X86_CPUID
 698         tristate "/dev/cpu/*/cpuid - CPU information support"
 699         help
 700           This device gives processes access to the x86 CPUID instruction to
 701           be executed on a specific processor.  It is a character device
 702           with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
 703           /dev/cpu/31/cpuid.
 704
 705 source "drivers/firmware/Kconfig"
 706
 707 choice
 708         prompt "High Memory Support"
 709         default NOHIGHMEM
 710
 711 config NOHIGHMEM
 712         bool "off"
 713         ---help---
 714           Linux can use up to 64 Gigabytes of physical memory on x86 systems.
 715           However, the address space of 32-bit x86 processors is only 4
 716           Gigabytes large. That means that, if you have a large amount of
 717           physical memory, not all of it can be "permanently mapped" by the
 718           kernel. The physical memory that's not permanently mapped is called
 719           "high memory".
 720
 721           If you are compiling a kernel which will never run on a machine with
 722           more than 1 Gigabyte total physical RAM, answer "off" here (default
 723           choice and suitable for most users). This will result in a "3GB/1GB"
 724           split: 3GB are mapped so that each process sees a 3GB virtual memory
 725           space and the remaining part of the 4GB virtual memory space is used
 726           by the kernel to permanently map as much physical memory as
 727           possible.
 728
 729           If the machine has between 1 and 4 Gigabytes physical RAM, then
 730           answer "4GB" here.
 731
 732           If more than 4 Gigabytes is used then answer "64GB" here. This
 733           selection turns Intel PAE (Physical Address Extension) mode on.
 734           PAE implements 3-level paging on IA32 processors. PAE is fully
 735           supported by Linux, PAE mode is implemented on all recent Intel
 736           processors (Pentium Pro and better). NOTE: If you say "64GB" here,
 737           then the kernel will not boot on CPUs that don't support PAE!
 738
 739           The actual amount of total physical memory will either be
 740           auto detected or can be forced by using a kernel command line option
 741           such as "mem=256M". (Try "man bootparam" or see the documentation of
 742           your boot loader (lilo or loadlin) about how to pass options to the
 743           kernel at boot time.)
 744
 745           If unsure, say "off".
 746
 747 config HIGHMEM4G
 748         bool "4GB"
 749         help
 750           Select this if you have a 32-bit processor and between 1 and 4
 751           gigabytes of physical RAM.
 752
 753 config HIGHMEM64G
 754         bool "64GB"
 755         help
 756           Select this if you have a 32-bit processor and more than 4
 757           gigabytes of physical RAM.
 758
 759 endchoice
 760
 761 config HIGHMEM
 762         bool
 763         depends on HIGHMEM64G || HIGHMEM4G
 764         default y
 765
 766 config X86_PAE
 767         bool
 768         depends on HIGHMEM64G
 769         default y
 770
 771 # Common NUMA Features
 772 config NUMA
 773         bool "Numa Memory Allocation and Scheduler Support"
 774         depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH || (X86_SUMMIT && ACPI))
 775         default n if X86_PC
 776         default y if (X86_NUMAQ || X86_SUMMIT)
 777
 778 # Need comments to help the hapless user trying to turn on NUMA support
 779 comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support"
 780         depends on X86_NUMAQ && (!HIGHMEM64G || !SMP)
 781
 782 comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
 783         depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
 784
 785 config HAVE_ARCH_BOOTMEM_NODE
 786         bool
 787         depends on NUMA
 788         default y
 789
 790 config ARCH_HAVE_MEMORY_PRESENT
 791         bool
 792         depends on DISCONTIGMEM
 793         default y
 794
 795 config NEED_NODE_MEMMAP_SIZE
 796         bool
 797         depends on DISCONTIGMEM || SPARSEMEM
 798         default y
 799
 800 config HAVE_ARCH_ALLOC_REMAP
 801         bool
 802         depends on NUMA
 803         default y
 804
 805 config ARCH_DISCONTIGMEM_ENABLE
 806         def_bool y
 807         depends on NUMA
 808
 809 config ARCH_DISCONTIGMEM_DEFAULT
 810         def_bool y
 811         depends on NUMA
 812
 813 config ARCH_SPARSEMEM_ENABLE
 814         def_bool y
 815         depends on NUMA
 816
 817 config ARCH_SELECT_MEMORY_MODEL
 818         def_bool y
 819         depends on ARCH_SPARSEMEM_ENABLE
 820
 821 source "mm/Kconfig"
 822
 823 config HAVE_ARCH_EARLY_PFN_TO_NID
 824         bool
 825         default y
 826         depends on NUMA
 827
 828 config HIGHPTE
 829         bool "Allocate 3rd-level pagetables from highmem"
 830         depends on HIGHMEM4G || HIGHMEM64G
 831         help
 832           The VM uses one page table entry for each page of physical memory.
 833           For systems with a lot of RAM, this can be wasteful of precious
 834           low memory.  Setting this option will put user-space page table
 835           entries in high memory.
 836
 837 config MATH_EMULATION
 838         bool "Math emulation"
 839         ---help---
 840           Linux can emulate a math coprocessor (used for floating point
 841           operations) if you don't have one. 486DX and Pentium processors have
 842           a math coprocessor built in, 486SX and 386 do not, unless you added
 843           a 487DX or 387, respectively. (The messages during boot time can
 844           give you some hints here ["man dmesg"].) Everyone needs either a
 845           coprocessor or this emulation.
 846
 847           If you don't have a math coprocessor, you need to say Y here; if you
 848           say Y here even though you have a coprocessor, the coprocessor will
 849           be used nevertheless. (This behavior can be changed with the kernel
 850           command line option "no387", which comes handy if your coprocessor
 851           is broken. Try "man bootparam" or see the documentation of your boot
 852           loader (lilo or loadlin) about how to pass options to the kernel at
 853           boot time.) This means that it is a good idea to say Y here if you
 854           intend to use this kernel on different machines.
 855
 856           More information about the internals of the Linux math coprocessor
 857           emulation can be found in <file:arch/i386/math-emu/README>.
 858
 859           If you are not sure, say Y; apart from resulting in a 66 KB bigger
 860           kernel, it won't hurt.
 861
 862 config MTRR
 863         bool "MTRR (Memory Type Range Register) support"
 864         ---help---
 865           On Intel P6 family processors (Pentium Pro, Pentium II and later)
 866           the Memory Type Range Registers (MTRRs) may be used to control
 867           processor access to memory ranges. This is most useful if you have
 868           a video (VGA) card on a PCI or AGP bus. Enabling write-combining
 869           allows bus write transfers to be combined into a larger transfer
 870           before bursting over the PCI/AGP bus. This can increase performance
 871           of image write operations 2.5 times or more. Saying Y here creates a
 872           /proc/mtrr file which may be used to manipulate your processor's
 873           MTRRs. Typically the X server should use this.
 874
 875           This code has a reasonably generic interface so that similar
 876           control registers on other processors can be easily supported
 877           as well:
 878
 879           The Cyrix 6x86, 6x86MX and M II processors have Address Range
 880           Registers (ARRs) which provide a similar functionality to MTRRs. For
 881           these, the ARRs are used to emulate the MTRRs.
 882           The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
 883           MTRRs. The Centaur C6 (WinChip) has 8 MCRs, allowing
 884           write-combining. All of these processors are supported by this code
 885           and it makes sense to say Y here if you have one of them.
 886
 887           Saying Y here also fixes a problem with buggy SMP BIOSes which only
 888           set the MTRRs for the boot CPU and not for the secondary CPUs. This
 889           can lead to all sorts of problems, so it's good to say Y here.
 890
 891           You can safely say Y even if your machine doesn't have MTRRs, you'll
 892           just add about 9 KB to your kernel.
 893
 894           See <file:Documentation/mtrr.txt> for more information.
 895
 896 config EFI
 897         bool "Boot from EFI support (EXPERIMENTAL)"
 898         depends on ACPI
 899         default n
 900         ---help---
 901         This enables the the kernel to boot on EFI platforms using
 902         system configuration information passed to it from the firmware.
 903         This also enables the kernel to use any EFI runtime services that are
 904         available (such as the EFI variable services).
 905
 906         This option is only useful on systems that have EFI firmware
 907         and will result in a kernel image that is ~8k larger.  In addition,
 908         you must use the latest ELILO loader available at
 909         <http://elilo.sourceforge.net> in order to take advantage of
 910         kernel initialization using EFI information (neither GRUB nor LILO know
 911         anything about EFI).  However, even with this option, the resultant
 912         kernel should continue to boot on existing non-EFI platforms.
 913
 914 config IRQBALANCE
 915         bool "Enable kernel irq balancing"
 916         depends on SMP && X86_IO_APIC
 917         default y
 918         help
 919           The default yes will allow the kernel to do irq load balancing.
 920           Saying no will keep the kernel from doing irq load balancing.
 921
 922 config HAVE_DEC_LOCK
 923         bool
 924         depends on (SMP || PREEMPT) && X86_CMPXCHG
 925         default y
 926
 927 # turning this on wastes a bunch of space.
 928 # Summit needs it only when NUMA is on
 929 config BOOT_IOREMAP
 930         bool
 931         depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI))
 932         default y
 933
 934 config REGPARM
 935         bool "Use register arguments (EXPERIMENTAL)"
 936         depends on EXPERIMENTAL
 937         default n
 938         help
 939         Compile the kernel with -mregparm=3. This uses a different ABI
 940         and passes the first three arguments of a function call in registers.
 941         This will probably break binary only modules.
 942
 943         This feature is only enabled for gcc-3.0 and later - earlier compilers
 944         generate incorrect output with certain kernel constructs when
 945         -mregparm=3 is used.
 946
 947 config SECCOMP
 948         bool "Enable seccomp to safely compute untrusted bytecode"
 949         depends on PROC_FS
 950         default y
 951         help
 952           This kernel feature is useful for number crunching applications
 953           that may need to compute untrusted bytecode during their
 954           execution. By using pipes or other transports made available to
 955           the process as file descriptors supporting the read/write
 956           syscalls, it's possible to isolate those applications in
 957           their own address space using seccomp. Once seccomp is
 958           enabled via /proc/<pid>/seccomp, it cannot be disabled
 959           and the task is only allowed to execute a few safe syscalls
 960           defined by each seccomp mode.
 961
 962           If unsure, say Y. Only embedded should say N here.
 963
 964 endmenu
 965
 966
 967 menu "Power management options (ACPI, APM)"
 968         depends on !X86_VOYAGER
 969
 970 source kernel/power/Kconfig
 971
 972 source "drivers/acpi/Kconfig"
 973
 974 menu "APM (Advanced Power Management) BIOS Support"
 975 depends on PM && !X86_VISWS
 976
 977 config APM
 978         tristate "APM (Advanced Power Management) BIOS support"
 979         depends on PM
 980         ---help---
 981           APM is a BIOS specification for saving power using several different
 982           techniques. This is mostly useful for battery powered laptops with
 983           APM compliant BIOSes. If you say Y here, the system time will be
 984           reset after a RESUME operation, the /proc/apm device will provide
 985           battery status information, and user-space programs will receive
 986           notification of APM "events" (e.g. battery status change).
 987
 988           If you select "Y" here, you can disable actual use of the APM
 989           BIOS by passing the "apm=off" option to the kernel at boot time.
 990
 991           Note that the APM support is almost completely disabled for
 992           machines with more than one CPU.
 993
 994           In order to use APM, you will need supporting software. For location
 995           and more information, read <file:Documentation/pm.txt> and the
 996           Battery Powered Linux mini-HOWTO, available from
 997           <http://www.tldp.org/docs.html#howto>.
 998
 999           This driver does not spin down disk drives (see the hdparm(8)
1000           manpage ("man 8 hdparm") for that), and it doesn't turn off
1001           VESA-compliant "green" monitors.
1002
1003           This driver does not support the TI 4000M TravelMate and the ACER
1004           486/DX4/75 because they don't have compliant BIOSes. Many "green"
1005           desktop machines also don't have compliant BIOSes, and this driver
1006           may cause those machines to panic during the boot phase.
1007
1008           Generally, if you don't have a battery in your machine, there isn't
1009           much point in using this driver and you should say N. If you get
1010           random kernel OOPSes or reboots that don't seem to be related to
1011           anything, try disabling/enabling this option (or disabling/enabling
1012           APM in your BIOS).
1013
1014           Some other things you should try when experiencing seemingly random,
1015           "weird" problems:
1016
1017           1) make sure that you have enough swap space and that it is
1018           enabled.
1019           2) pass the "no-hlt" option to the kernel
1020           3) switch on floating point emulation in the kernel and pass
1021           the "no387" option to the kernel
1022           4) pass the "floppy=nodma" option to the kernel
1023           5) pass the "mem=4M" option to the kernel (thereby disabling
1024           all but the first 4 MB of RAM)
1025           6) make sure that the CPU is not over clocked.
1026           7) read the sig11 FAQ at <http://www.bitwizard.nl/sig11/>
1027           8) disable the cache from your BIOS settings
1028           9) install a fan for the video card or exchange video RAM
1029           10) install a better fan for the CPU
1030           11) exchange RAM chips
1031           12) exchange the motherboard.
1032
1033           To compile this driver as a module, choose M here: the
1034           module will be called apm.
1035
1036 config APM_IGNORE_USER_SUSPEND
1037         bool "Ignore USER SUSPEND"
1038         depends on APM
1039         help
1040           This option will ignore USER SUSPEND requests. On machines with a
1041           compliant APM BIOS, you want to say N. However, on the NEC Versa M
1042           series notebooks, it is necessary to say Y because of a BIOS bug.
1043
1044 config APM_DO_ENABLE
1045         bool "Enable PM at boot time"
1046         depends on APM
1047         ---help---
1048           Enable APM features at boot time. From page 36 of the APM BIOS
1049           specification: "When disabled, the APM BIOS does not automatically
1050           power manage devices, enter the Standby State, enter the Suspend
1051           State, or take power saving steps in response to CPU Idle calls."
1052           This driver will make CPU Idle calls when Linux is idle (unless this
1053           feature is turned off -- see "Do CPU IDLE calls", below). This
1054           should always save battery power, but more complicated APM features
1055           will be dependent on your BIOS implementation. You may need to turn
1056           this option off if your computer hangs at boot time when using APM
1057           support, or if it beeps continuously instead of suspending. Turn
1058           this off if you have a NEC UltraLite Versa 33/C or a Toshiba
1059           T400CDT. This is off by default since most machines do fine without
1060           this feature.
1061
1062 config APM_CPU_IDLE
1063         bool "Make CPU Idle calls when idle"
1064         depends on APM
1065         help
1066           Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
1067           On some machines, this can activate improved power savings, such as
1068           a slowed CPU clock rate, when the machine is idle. These idle calls
1069           are made after the idle loop has run for some length of time (e.g.,
1070           333 mS). On some machines, this will cause a hang at boot time or
1071           whenever the CPU becomes idle. (On machines with more than one CPU,
1072           this option does nothing.)
1073
1074 config APM_DISPLAY_BLANK
1075         bool "Enable console blanking using APM"
1076         depends on APM
1077         help
1078           Enable console blanking using the APM. Some laptops can use this to
1079           turn off the LCD backlight when the screen blanker of the Linux
1080           virtual console blanks the screen. Note that this is only used by
1081           the virtual console screen blanker, and won't turn off the backlight
1082           when using the X Window system. This also doesn't have anything to
1083           do with your VESA-compliant power-saving monitor. Further, this
1084           option doesn't work for all laptops -- it might not turn off your
1085           backlight at all, or it might print a lot of errors to the console,
1086           especially if you are using gpm.
1087
1088 config APM_RTC_IS_GMT
1089         bool "RTC stores time in GMT"
1090         depends on APM
1091         help
1092           Say Y here if your RTC (Real Time Clock a.k.a. hardware clock)
1093           stores the time in GMT (Greenwich Mean Time). Say N if your RTC
1094           stores localtime.
1095
1096           It is in fact recommended to store GMT in your RTC, because then you
1097           don't have to worry about daylight savings time changes. The only
1098           reason not to use GMT in your RTC is if you also run a broken OS
1099           that doesn't understand GMT.
1100
1101 config APM_ALLOW_INTS
1102         bool "Allow interrupts during APM BIOS calls"
1103         depends on APM
1104         help
1105           Normally we disable external interrupts while we are making calls to
1106           the APM BIOS as a measure to lessen the effects of a badly behaving
1107           BIOS implementation.  The BIOS should reenable interrupts if it
1108           needs to.  Unfortunately, some BIOSes do not -- especially those in
1109           many of the newer IBM Thinkpads.  If you experience hangs when you
1110           suspend, try setting this to Y.  Otherwise, say N.
1111
1112 config APM_REAL_MODE_POWER_OFF
1113         bool "Use real mode APM BIOS call to power off"
1114         depends on APM
1115         help
1116           Use real mode APM BIOS calls to switch off the computer. This is
1117           a work-around for a number of buggy BIOSes. Switch this option on if
1118           your computer crashes instead of powering off properly.
1119
1120 endmenu
1121
1122 source "arch/i386/kernel/cpu/cpufreq/Kconfig"
1123
1124 endmenu
1125
1126 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
1127
1128 config PCI
1129         bool "PCI support" if !X86_VISWS
1130         depends on !X86_VOYAGER
1131         default y if X86_VISWS
1132         help
1133           Find out whether you have a PCI motherboard. PCI is the name of a
1134           bus system, i.e. the way the CPU talks to the other stuff inside
1135           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1136           VESA. If you have PCI, say Y, otherwise N.
1137
1138           The PCI-HOWTO, available from
1139           <http://www.tldp.org/docs.html#howto>, contains valuable
1140           information about which PCI hardware does work under Linux and which
1141           doesn't.
1142
1143 choice
1144         prompt "PCI access mode"
1145         depends on PCI && !X86_VISWS
1146         default PCI_GOANY
1147         ---help---
1148           On PCI systems, the BIOS can be used to detect the PCI devices and
1149           determine their configuration. However, some old PCI motherboards
1150           have BIOS bugs and may crash if this is done. Also, some embedded
1151           PCI-based systems don't have any BIOS at all. Linux can also try to
1152           detect the PCI hardware directly without using the BIOS.
1153
1154           With this option, you can specify how Linux should detect the
1155           PCI devices. If you choose "BIOS", the BIOS will be used,
1156           if you choose "Direct", the BIOS won't be used, and if you
1157           choose "MMConfig", then PCI Express MMCONFIG will be used.
1158           If you choose "Any", the kernel will try MMCONFIG, then the
1159           direct access method and falls back to the BIOS if that doesn't
1160           work. If unsure, go with the default, which is "Any".
1161
1162 config PCI_GOBIOS
1163         bool "BIOS"
1164
1165 config PCI_GOMMCONFIG
1166         bool "MMConfig"
1167
1168 config PCI_GODIRECT
1169         bool "Direct"
1170
1171 config PCI_GOANY
1172         bool "Any"
1173
1174 endchoice
1175
1176 config PCI_BIOS
1177         bool
1178         depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
1179         default y
1180
1181 config PCI_DIRECT
1182         bool
1183         depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
1184         default y
1185
1186 config PCI_MMCONFIG
1187         bool
1188         depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
1189         select ACPI_BOOT
1190         default y
1191
1192 source "drivers/pci/pcie/Kconfig"
1193
1194 source "drivers/pci/Kconfig"
1195
1196 config ISA_DMA_API
1197         bool
1198         default y
1199
1200 config ISA
1201         bool "ISA support"
1202         depends on !(X86_VOYAGER || X86_VISWS)
1203         help
1204           Find out whether you have ISA slots on your motherboard.  ISA is the
1205           name of a bus system, i.e. the way the CPU talks to the other stuff
1206           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1207           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1208           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1209
1210 config EISA
1211         bool "EISA support"
1212         depends on ISA
1213         ---help---
1214           The Extended Industry Standard Architecture (EISA) bus was
1215           developed as an open alternative to the IBM MicroChannel bus.
1216
1217           The EISA bus provided some of the features of the IBM MicroChannel
1218           bus while maintaining backward compatibility with cards made for
1219           the older ISA bus.  The EISA bus saw limited use between 1988 and
1220           1995 when it was made obsolete by the PCI bus.
1221
1222           Say Y here if you are building a kernel for an EISA-based machine.
1223
1224           Otherwise, say N.
1225
1226 source "drivers/eisa/Kconfig"
1227
1228 config MCA
1229         bool "MCA support" if !(X86_VISWS || X86_VOYAGER)
1230         default y if X86_VOYAGER
1231         help
1232           MicroChannel Architecture is found in some IBM PS/2 machines and
1233           laptops.  It is a bus system similar to PCI or ISA. See
1234           <file:Documentation/mca.txt> (and especially the web page given
1235           there) before attempting to build an MCA bus kernel.
1236
1237 source "drivers/mca/Kconfig"
1238
1239 config SCx200
1240         tristate "NatSemi SCx200 support"
1241         depends on !X86_VOYAGER
1242         help
1243           This provides basic support for the National Semiconductor SCx200
1244           processor.  Right now this is just a driver for the GPIO pins.
1245
1246           If you don't know what to do here, say N.
1247
1248           This support is also available as a module.  If compiled as a
1249           module, it will be called scx200.
1250
1251 source "drivers/pcmcia/Kconfig"
1252
1253 source "drivers/pci/hotplug/Kconfig"
1254
1255 endmenu
1256
1257 menu "Executable file formats"
1258
1259 source "fs/Kconfig.binfmt"
1260
1261 endmenu
1262
1263 source "drivers/Kconfig"
1264
1265 source "fs/Kconfig"
1266
1267 source "arch/i386/oprofile/Kconfig"
1268
1269 source "arch/i386/Kconfig.debug"
1270
1271 source "security/Kconfig"
1272
1273 source "crypto/Kconfig"
1274
1275 source "lib/Kconfig"
1276
1277 #
1278 # Use the generic interrupt handling code in kernel/irq/:
1279 #
1280 config GENERIC_HARDIRQS
1281         bool
1282         default y
1283
1284 config GENERIC_IRQ_PROBE
1285         bool
1286         default y
1287
1288 config X86_SMP
1289         bool
1290         depends on SMP && !X86_VOYAGER
1291         default y
1292
1293 config X86_HT
1294         bool
1295         depends on SMP && !(X86_VISWS || X86_VOYAGER)
1296         default y
1297
1298 config X86_BIOS_REBOOT
1299         bool
1300         depends on !(X86_VISWS || X86_VOYAGER)
1301         default y
1302
1303 config X86_TRAMPOLINE
1304         bool
1305         depends on X86_SMP || (X86_VOYAGER && SMP)
1306         default y
1307
1308 config PC
1309         bool
1310         depends on X86 && !EMBEDDED
1311         default y