The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/pc98/conf/NOTES

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    1 #
    2 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
    3 #
    4 # This file contains machine dependent kernel configuration notes.  For
    5 # machine independent notes, look in /sys/conf/NOTES.
    6 #
    7 # $FreeBSD$
    8 #
    9 
   10 #
   11 # We want LINT to cover profiling as well.
   12 profile         2
   13 
   14 
   15 #####################################################################
   16 # SMP OPTIONS:
   17 #
   18 # The apic device enables the use of the I/O APIC for interrupt delivery.
   19 # The apic device can be used in both UP and SMP kernels, but is required
   20 # for SMP kernels.  Thus, the apic device is not strictly an SMP option,
   21 # but it is a prerequisite for SMP.
   22 #
   23 
   24 # Mandatory:
   25 device          apic                    # I/O apic
   26 
   27 #
   28 # Watchdog routines.
   29 #
   30 options         MP_WATCHDOG
   31 
   32 
   33 
   34 #####################################################################
   35 # CPU OPTIONS
   36 
   37 #
   38 # You must specify at least one CPU (the one you intend to run on);
   39 # deleting the specification for CPUs you don't need to use may make
   40 # parts of the system run faster.
   41 #
   42 cpu             I486_CPU
   43 cpu             I586_CPU                # aka Pentium(tm)
   44 cpu             I686_CPU                # aka Pentium Pro(tm)
   45 
   46 #
   47 # Options for CPU features.
   48 #
   49 # CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
   50 # CPU if CPU supports it.  The default is double-clock mode on
   51 # BlueLightning CPU box.
   52 #
   53 # CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
   54 # BlueLightning CPU.  It works only with Cyrix FPU, and this option
   55 # should not be used with Intel FPU.
   56 #
   57 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
   58 #
   59 # CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
   60 # of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
   61 # Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
   62 #
   63 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
   64 # mapped mode.  Default is 2-way set associative mode.
   65 #
   66 # CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
   67 # reorder).  This option should not be used if you use memory mapped
   68 # I/O device(s).
   69 #
   70 # CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
   71 # machines.  VmWare 3.x seems to emulate this instruction poorly, causing
   72 # the guest OS to run very slowly.  This problem appears to be fixed in
   73 # VmWare 4.x, at least in version 4.5.2, so that enabling this option with
   74 # VmWare 4.x will result in locking operations to be 20-30 times slower.
   75 # Enabling this with an SMP kernel will cause the kernel to be unusable.
   76 #
   77 # CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
   78 #
   79 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
   80 #
   81 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
   82 # for i386 machines.
   83 #
   84 # CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
   85 # I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
   86 # (no clock delay).
   87 #
   88 # CPU_L2_LATENCY specifies the L2 cache latency value.  This option is used
   89 # only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
   90 # The default value is 5.
   91 #
   92 # CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
   93 # of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
   94 # 1).
   95 #
   96 # CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
   97 # is useful when you use Socket 8 to Socket 370 converter, because most Pentium
   98 # Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
   99 #
  100 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
  101 #
  102 # CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
  103 # enters suspend mode following execution of HALT instruction.
  104 #
  105 # CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
  106 #
  107 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
  108 # K5/K6/K6-2 CPUs.
  109 #
  110 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
  111 # flush at hold state.
  112 #
  113 # CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
  114 # without cache flush at hold state, and (2) write-back CPU cache on
  115 # Cyrix 6x86 whose revision < 2.7 (NOTE 2).
  116 #
  117 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
  118 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
  119 # executed.  This option is only needed if I586_CPU is also defined,
  120 # and should be included for any non-Pentium CPU that defines it.
  121 #
  122 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
  123 # which indicates that the 15-16MB range is *definitely* not being
  124 # occupied by an ISA memory hole.
  125 #
  126 # NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
  127 # CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
  128 # These options may crash your system.
  129 #
  130 # NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
  131 # in write-through mode when revision < 2.7.  If revision of Cyrix
  132 # 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
  133 #
  134 # NOTE 3: This option may cause failures for software that requires
  135 # locked cycles in order to operate correctly.
  136 #
  137 options         CPU_BLUELIGHTNING_3X
  138 options         CPU_BLUELIGHTNING_FPU_OP_CACHE
  139 options         CPU_BTB_EN
  140 options         CPU_DIRECT_MAPPED_CACHE
  141 options         CPU_DISABLE_5X86_LSSER
  142 options         CPU_DISABLE_CMPXCHG
  143 #options        CPU_DISABLE_SSE
  144 options         CPU_FASTER_5X86_FPU
  145 options         CPU_I486_ON_386
  146 options         CPU_IORT
  147 options         CPU_L2_LATENCY=5
  148 options         CPU_LOOP_EN
  149 options         CPU_PPRO2CELERON
  150 options         CPU_RSTK_EN
  151 options         CPU_SUSP_HLT
  152 options         CPU_UPGRADE_HW_CACHE
  153 options         CPU_WT_ALLOC
  154 options         CYRIX_CACHE_WORKS
  155 options         CYRIX_CACHE_REALLY_WORKS
  156 #options        NO_F00F_HACK
  157 
  158 # Debug options
  159 options         NPX_DEBUG       # enable npx debugging
  160 
  161 #
  162 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
  163 # to be compiled.  See perfmon(4) for more information.
  164 #
  165 options         PERFMON
  166 
  167 
  168 #####################################################################
  169 # NETWORKING OPTIONS
  170 
  171 #
  172 # DEVICE_POLLING adds support for mixed interrupt-polling handling
  173 # of network device drivers, which has significant benefits in terms
  174 # of robustness to overloads and responsivity, as well as permitting
  175 # accurate scheduling of the CPU time between kernel network processing
  176 # and other activities.  The drawback is a moderate (up to 1/HZ seconds)
  177 # potential increase in response times.
  178 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
  179 # to achieve smoother behaviour.
  180 # Additionally, you can enable/disable polling at runtime with help of
  181 # the ifconfig(8) utility, and select the CPU fraction reserved to
  182 # userland with the sysctl variable kern.polling.user_frac
  183 # (default 50, range 0..100).
  184 #
  185 # Not all device drivers support this mode of operation at the time of
  186 # this writing.  See polling(4) for more details.
  187 
  188 options         DEVICE_POLLING
  189 
  190 # BPF_JITTER adds support for BPF just-in-time compiler.
  191 
  192 options         BPF_JITTER
  193 
  194 
  195 #####################################################################
  196 # MISCELLANEOUS DEVICES AND OPTIONS
  197 
  198 # 
  199 # sio: serial ports (see sio(4)), including support for various
  200 #      PC Card devices, such as Modem and NICs
  201 #
  202 #device         sio
  203 hint.sio.0.at="isa"
  204 hint.sio.0.port="0x3F8"
  205 hint.sio.0.flags="0x10"
  206 hint.sio.0.irq="4"
  207 
  208 # `flags' specific to sio(4).
  209 #       0x10    enable console support for this unit.  Other console flags
  210 #               (if applicable) are ignored unless this is set.  Enabling
  211 #               console support does not make the unit the preferred console.
  212 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
  213 #               specifically, the 0x20 flag can also be set (see above).
  214 #               Currently, at most one unit can have console support; the
  215 #               first one (in config file order) with this flag set is
  216 #               preferred.  Setting this flag for sio0 gives the old behaviour.
  217 #       0x20    force this unit to be the console (unless there is another
  218 #               higher priority console).  This replaces the COMCONSOLE option.
  219 #       0x40    reserve this unit for low level console operations.  Do not
  220 #               access the device in any normal way.
  221 #       0x80    use this port for serial line gdb support in ddb.  Also known
  222 #               as debug port.
  223 # PnP `flags'
  224 #       0x1     disable probing of this device.  Used to prevent your modem
  225 #               from being attached as a PnP modem.
  226 # Other flags for sio that aren't documented in the man page.
  227 #       0x20000 enable hardware RTS/CTS and larger FIFOs.  Only works for
  228 #               ST16650A-compatible UARTs.
  229 
  230 # Options for sio:
  231 options         COM_ESP                 # Code for Hayes ESP.
  232 options         COM_MULTIPORT           # Code for some cards with shared IRQs.
  233 options         CONSPEED=115200         # Speed for serial console
  234                                         # (default 9600).
  235 
  236 device          speaker         #Play IBM BASIC-style noises out your speaker
  237 hint.speaker.0.at="isa"
  238 hint.speaker.0.port="0x35"
  239 device          gzip            #Exec gzipped a.out's.  REQUIRES COMPAT_AOUT!
  240 device          apm_saver       # Requires APM
  241 
  242 
  243 #####################################################################
  244 # HARDWARE BUS CONFIGURATION
  245 
  246 #
  247 # ISA bus
  248 #
  249 device          isa
  250 
  251 #
  252 # Options for `isa':
  253 #
  254 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
  255 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
  256 # This option breaks suspend/resume on some portables.
  257 #
  258 # MAXMEM specifies the amount of RAM on the machine; if this is not
  259 # specified, FreeBSD will first read the amount of memory from the CMOS
  260 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
  261 # depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
  262 # then attempt to detect the installed amount of RAM.  If this probe
  263 # fails to detect >64MB RAM you will have to use the MAXMEM option.
  264 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
  265 # be 131072 (128 * 1024).
  266 #
  267 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
  268 # reset the CPU for reboot.  This is needed on some systems with broken
  269 # keyboard controllers.
  270 #
  271 # EPSON_BOUNCEDMA was to use a bounce buffer to upper 15MB, but it's
  272 # broken now.
  273 #
  274 # EPSON_MEMWIN disables 15-16MB chunk, and enables EPSON memory window.
  275 #
  276 
  277 options         AUTO_EOI_1
  278 
  279 options         MAXMEM=(128*1024)
  280 #options        BROKEN_KEYBOARD_RESET
  281 options         EPSON_BOUNCEDMA
  282 options         EPSON_MEMWIN
  283 
  284 #
  285 # PCI bus & PCI options:
  286 #
  287 device          pci
  288 
  289 #
  290 # AGP GART support
  291 device          agp
  292 
  293 # AGP debugging.
  294 options         AGP_DEBUG
  295 
  296 
  297 #####################################################################
  298 # HARDWARE DEVICE CONFIGURATION
  299 
  300 # PC98 keyboard
  301 device          pckbd
  302 hint.pckbd.0.at="isa"
  303 hint.pckbd.0.port="0x041"
  304 hint.pckbd.0.irq="1"
  305 
  306 # GDC screen
  307 device          gdc
  308 hint.gdc.0.at="isa"
  309 options         LINE30
  310 
  311 #
  312 # The Numeric Processing eXtension driver.  This is non-optional.
  313 device          npx
  314 
  315 #
  316 # `flags' for npx0:
  317 #       0x01    don't use the npx registers to optimize bcopy.
  318 #       0x02    don't use the npx registers to optimize bzero.
  319 #       0x04    don't use the npx registers to optimize copyin or copyout.
  320 # The npx registers are normally used to optimize copying and zeroing when
  321 # all of the following conditions are satisfied:
  322 #       I586_CPU is an option
  323 #       the cpu is an i586 (perhaps not a Pentium)
  324 #       the probe for npx0 succeeds
  325 #       INT 16 exception handling works.
  326 # Then copying and zeroing using the npx registers is normally 30-100% faster.
  327 # The flags can be used to control cases where it doesn't work or is slower.
  328 # Setting them at boot time using hints works right (the optimizations
  329 # are not used until later in the bootstrap when npx0 is attached).
  330 # Flag 0x08 automatically disables the i586 optimized routines.
  331 #
  332 
  333 #
  334 # Optional devices:
  335 #
  336 
  337 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support.  This will create
  338 # the /dev/3dfx0 device to work with glide implementations.  This should get
  339 # linked to /dev/3dfx and /dev/voodoo.  Note that this is not the same as
  340 # the tdfx DRI module from XFree86 and is completely unrelated.
  341 #
  342 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
  343 # config as well.  The other option is to load both as modules.
  344 
  345 device          tdfx                    # Enable 3Dfx Voodoo support
  346 device          tdfx_linux              # Enable Linuxulator support
  347 
  348 # Direct Rendering modules for 3D acceleration.
  349 device          drm             # DRM core module required by DRM drivers
  350 device          mach64drm       # ATI Rage Pro, Rage Mobility P/M, Rage XL
  351 device          mgadrm          # AGP Matrox G200, G400, G450, G550
  352 device          r128drm         # ATI Rage 128
  353 device          radeondrm       # ATI Radeon
  354 device          savagedrm       # S3 Savage3D, Savage4
  355 device          sisdrm          # SiS 300/305, 540, 630
  356 device          tdfxdrm         # 3dfx Voodoo 3/4/5 and Banshee
  357 options         DRM_DEBUG       # Include debug printfs (slow)
  358 
  359 #
  360 # Bus mouse
  361 #
  362 device          mse
  363 hint.mse.0.at="isa"
  364 hint.mse.0.port="0x7fd9"
  365 hint.mse.0.irq="13"
  366 
  367 #
  368 # Network interfaces:
  369 #
  370 
  371 # ce:   Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
  372 #       with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
  373 #       NETGRAPH_CRONYX is configured)
  374 # cp:   Cronyx Tau-PCI sync single/dual/four port
  375 #       V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
  376 #       serial adaptor (requires sppp (default), or NETGRAPH if
  377 #       NETGRAPH_CRONYX is configured)
  378 # cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard
  379 # ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
  380 #       HP PC Lan+, various PC Card devices
  381 #       (requires miibus)
  382 # ie:   AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
  383 #       Intel EtherExpress
  384 # le:   AMD Am7900 LANCE and Am79C9xx ILACC/PCnet Ethernet interface driver
  385 # sbni: Granch SBNI12-xx ISA and PCI adapters
  386 # snc:  National Semiconductor DP8393X SONIC Ethernet adapter driver
  387 
  388 # Order for ISA/EISA devices is important here
  389 
  390 device          ce
  391 device          cp
  392 device          cs
  393 device          ed
  394 hint.ed.0.at="isa"
  395 hint.ed.0.port="0x280"
  396 hint.ed.0.irq="5"
  397 hint.ed.0.maddr="0xd8000"
  398 device          ie                      # Hints only required for Starlan
  399 hint.ie.2.at="isa"
  400 hint.ie.2.port="0x300"
  401 hint.ie.2.irq="5"
  402 hint.ie.2.maddr="0xd0000"
  403 #device         le
  404 # Hint for the PC98-only C-NET(98)S C-bus front-end of le(4).
  405 hint.le.0.at="isa"
  406 hint.le.0.port="0x03d0"
  407 hint.le.0.irq="6"
  408 device          sbni
  409 hint.sbni.0.at="isa"
  410 hint.sbni.0.port="0x210"
  411 hint.sbni.0.irq="0xefdead"
  412 hint.sbni.0.flags="0"
  413 device          snc
  414 hint.snc.0.at="isa"
  415 hint.snc.0.port="0x888"
  416 hint.snc.0.irq="6"
  417 hint.snc.0.maddr="0xc0000"
  418 
  419 #
  420 # SCSI host adapters:
  421 #
  422 # ct: WD33C93[ABC] based SCSI host adapters.
  423 # ncv: NCR 53C500 based SCSI host adapters.
  424 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
  425 # stg: TMC 18C30, 18C50 based SCSI host adapters.
  426 
  427 device          ct
  428 hint.ct.0.at="isa"
  429 device          ncv
  430 device          nsp
  431 device          stg
  432 
  433 #
  434 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
  435 # it's tested on a big-endian machine
  436 #
  437 device          safe            # SafeNet 1141
  438 options         SAFE_DEBUG      # enable debugging support: hw.safe.debug
  439 options         SAFE_RNDTEST    # enable rndtest support
  440 
  441 #####################################################################
  442 
  443 #
  444 # Miscellaneous hardware:
  445 #
  446 # apm: Laptop Advanced Power Management (experimental)
  447 # canbus: CanBe I/O Bus
  448 # canbepm: CanBe Power Management Controller
  449 # olpt: XXX
  450 # pmc: Power Management Controller of NEC PC-98Note
  451 # pmtimer: Timer device driver for power management events (APM or ACPI)
  452 #          Adjusts system timer at wakeup time
  453 #
  454 # Notes on APM
  455 #  The flags takes the following meaning for apm0:
  456 #    0x0020  Statclock is broken.
  457 
  458 device          apm
  459 hint.apm.0.flags="0x20"
  460 device          canbus
  461 device          canbepm
  462 device          olpt
  463 hint.olpt.0.at="isa"
  464 hint.olpt.0.port="0x040"
  465 device          pmc
  466 hint.pmc.0.at="isa"
  467 hint.pmc.0.port="0x8f0"
  468 device          pmtimer
  469 
  470 #
  471 # Laptop/Notebook options:
  472 #
  473 # See also:
  474 #  apm under `Miscellaneous hardware'
  475 # above.
  476 
  477 # For older notebooks that signal a powerfail condition (external
  478 # power supply dropped, or battery state low) by issuing an NMI:
  479 
  480 options         POWERFAIL_NMI   # make it beep instead of panicing
  481 
  482 #
  483 # Set the number of PV entries per process.  Increasing this can
  484 # stop panics related to heavy use of shared memory.  However, that can
  485 # (combined with large amounts of physical memory) cause panics at
  486 # boot time due the kernel running out of VM space.
  487 #
  488 # If you're tweaking this, you might also want to increase the sysctls
  489 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
  490 #
  491 # The value below is the one more than the default.
  492 #
  493 options         PMAP_SHPGPERPROC=201
  494 
  495 #
  496 # Change the size of the kernel virtual address space.  Due to
  497 # constraints in loader(8) on i386, this must be a multiple of 4.
  498 # 256 = 1 GB of kernel address space.  Increasing this also causes
  499 # a reduction of the address space in user processes.  512 splits
  500 # the 4GB cpu address space in half (2GB user, 2GB kernel).
  501 #
  502 options         KVA_PAGES=260
  503 
  504 
  505 #####################################################################
  506 # ABI Emulation
  507 
  508 # Enable iBCS2 runtime support for SCO and ISC binaries
  509 options         IBCS2
  510 
  511 # Emulate spx device for client side of SVR3 local X interface
  512 options         SPX_HACK
  513 
  514 # Enable Linux ABI emulation
  515 options         COMPAT_LINUX
  516 
  517 # Enable i386 a.out binary support
  518 options         COMPAT_AOUT
  519 
  520 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
  521 # and PSEUDOFS)
  522 options         LINPROCFS
  523 
  524 # Enable the linux-like sys filesystem support (requires COMPAT_LINUX
  525 # and PSEUDOFS)
  526 options         LINSYSFS
  527 
  528 #
  529 # SysVR4 ABI emulation
  530 #
  531 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
  532 # a KLD module.
  533 # The STREAMS network emulation code can also be compiled statically or as a
  534 # module.  If loaded as a module, it must be loaded before the svr4 module
  535 # (the /usr/sbin/svr4 script does this for you).  If compiling statically,
  536 # the `streams' device must be configured into any kernel which also
  537 # specifies COMPAT_SVR4.  It is possible to have a statically-configured
  538 # STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
  539 # script understands that it doesn't need to load the `streams' module under
  540 # those circumstances.
  541 # Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
  542 # (whether static or dynamic).
  543 #
  544 options         COMPAT_SVR4     # build emulator statically
  545 options         DEBUG_SVR4      # enable verbose debugging
  546 device          streams         # STREAMS network driver (required for svr4).
  547 
  548 # Linux-specific pseudo devices support
  549 device          lindev
  550 
  551 
  552 #####################################################################
  553 # VM OPTIONS
  554 
  555 # Disable the 4 MByte page PSE CPU feature.  The PSE feature allows the
  556 # kernel to use 4 MByte pages to map the kernel instead of 4k pages.
  557 # This saves on the amount of memory needed for page tables needed to
  558 # map the kernel.  You should only disable this feature as a temporary
  559 # workaround if you are having problems with it enabled.
  560 #
  561 #options        DISABLE_PSE
  562 
  563 # Disable the global pages PGE CPU feature.  The PGE feature allows pages
  564 # to be marked with the PG_G bit.  TLB entries for these pages are not
  565 # flushed from the cache when %cr3 is reloaded.  This can make context
  566 # switches less expensive.  You should only disable this feature as a
  567 # temporary workaround if you are having problems with it enabled.
  568 #
  569 #options        DISABLE_PG_G
  570 
  571 # KSTACK_PAGES is the number of memory pages to assign to the kernel
  572 # stack of each thread.
  573 
  574 options         KSTACK_PAGES=3
  575 
  576 #####################################################################
  577 
  578 # More undocumented options for linting.
  579 # Note that documenting these are not considered an affront.
  580 
  581 options         FB_INSTALL_CDEV         # install a CDEV entry in /dev
  582 
  583 options         I586_PMC_GUPROF=0x70000
  584 options         KBDIO_DEBUG=2
  585 options         KBD_MAXRETRY=4
  586 options         KBD_MAXWAIT=6
  587 options         KBD_RESETDELAY=201
  588 
  589 options         TIMER_FREQ=((14318182+6)/12)
  590 
  591 options         VM_KMEM_SIZE
  592 options         VM_KMEM_SIZE_MAX
  593 options         VM_KMEM_SIZE_SCALE
  594 
  595 
  596 #####################################################################
  597 # Devices we don't want to deal with
  598 
  599 nodevice        bt
  600 nodevice        adw
  601 nodevice        aha
  602 nodevice        ahb
  603 nodevice        ahd
  604 nodevice        mpt
  605 nodevice        trm
  606 nodevice        wds
  607 nodevice        dpt
  608 nodevice        ciss
  609 nodevice        iir
  610 nodevice        mly
  611 nodevice        ida             # Compaq Smart RAID
  612 nodevice        mlx             # Mylex DAC960
  613 nodevice        amr             # AMI MegaRAID
  614 nodevice        twe             # 3ware ATA RAID
  615 nodevice        ataraid
  616 nodevice        cm
  617 nodevice        ex
  618 nodevice        fea
  619 nodevice        intpm
  620 nodevice        alpm
  621 nodevice        ichsmb
  622 nodevice        viapm
  623 nodevice        amdpm
  624 nodevice        amdsmb
  625 nodevice        nfpm
  626 nodevice        nfsmb
  627 
  628 
  629 #####################################################################
  630 # Options we don't want to deal with
  631 
  632 nooption        AHD_DEBUG
  633 nooption        AHD_DEBUG_OPTS
  634 nooption        AHD_REG_PRETTY_PRINT
  635 nooption        ADW_ALLOW_MEMIO
  636 nooption        DPT_LOST_IRQ
  637 nooption        DPT_RESET_HBA
  638 nooption        DPT_TIMEOUT_FACTOR
  639 nooption        AAC_DEBUG
  640 
  641 
  642 #####################################################################
  643 # Make options we don't want to deal with

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