x86: nmi_watchdog - documentation fix

[linux-2.6-omap-h63xx.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e5f3d918316f5d421cafc88da6b9baf005c929ac..795c487af8e4dbbcdb0cedf5d048e7036bbb5ee0 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -271,6 +271,17 @@ and is between 256 and 4096 characters. It is defined in the file
        aic79xx=        [HW,SCSI]
                        See Documentation/scsi/aic79xx.txt.
 
        aic79xx=        [HW,SCSI]
                        See Documentation/scsi/aic79xx.txt.
 

+       amd_iommu=      [HW,X86-84]
+                       Pass parameters to the AMD IOMMU driver in the system.
+                       Possible values are:
+                       isolate - enable device isolation (each device, as far
+                                 as possible, will get its own protection
+                                 domain)
+       amd_iommu_size= [HW,X86-64]
+                       Define the size of the aperture for the AMD IOMMU
+                       driver. Possible values are:
+                       '32M', '64M' (default), '128M', '256M', '512M', '1G'
+

        amijoy.map=     [HW,JOY] Amiga joystick support
                        Map of devices attached to JOY0DAT and JOY1DAT
                        Format: <a>,<b>
        amijoy.map=     [HW,JOY] Amiga joystick support
                        Map of devices attached to JOY0DAT and JOY1DAT
                        Format: <a>,<b>


@@ -295,7 +306,7 @@ and is between 256 and 4096 characters. It is defined in the file
                        when initialising the APIC and IO-APIC components.
 
        apm=            [APM] Advanced Power Management
                        when initialising the APIC and IO-APIC components.
 
        apm=            [APM] Advanced Power Management

-                       See header of arch/i386/kernel/apm.c.
+                       See header of arch/x86/kernel/apm_32.c.

 
        arcrimi=        [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
                        Format: <io>,<irq>,<nodeID>
 
        arcrimi=        [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
                        Format: <io>,<irq>,<nodeID>


@@ -398,9 +409,6 @@ and is between 256 and 4096 characters. It is defined in the file
        cio_ignore=     [S390]
                        See Documentation/s390/CommonIO for details.
 
        cio_ignore=     [S390]
                        See Documentation/s390/CommonIO for details.
 

-       cio_msg=        [S390]
-                       See Documentation/s390/CommonIO for details.
-

        clock=          [BUGS=X86-32, HW] gettimeofday clocksource override.
                        [Deprecated]
                        Forces specified clocksource (if available) to be used
        clock=          [BUGS=X86-32, HW] gettimeofday clocksource override.
                        [Deprecated]
                        Forces specified clocksource (if available) to be used


@@ -496,6 +504,11 @@ and is between 256 and 4096 characters. It is defined in the file
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.
 
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.
 

+                If the device connected to the port is not a TTY but a braille
+                device, prepend "brl," before the device type, for instance
+                       console=brl,ttyS0
+               For now, only VisioBraille is supported.
+

        earlycon=       [KNL] Output early console device and options.
                uart[8250],io,<addr>[,options]
                uart[8250],mmio,<addr>[,options]
        earlycon=       [KNL] Output early console device and options.
                uart[8250],io,<addr>[,options]
                uart[8250],mmio,<addr>[,options]


@@ -556,6 +569,8 @@ and is between 256 and 4096 characters. It is defined in the file
                        1 will print _a lot_ more information - normally
                        only useful to kernel developers.
 
                        1 will print _a lot_ more information - normally
                        only useful to kernel developers.
 

+       debug_objects   [KNL] Enable object debugging
+

        decnet.addr=    [HW,NET]
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.
        decnet.addr=    [HW,NET]
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.


@@ -595,6 +610,29 @@ and is between 256 and 4096 characters. It is defined in the file
                        See drivers/char/README.epca and
                        Documentation/digiepca.txt.
 
                        See drivers/char/README.epca and
                        Documentation/digiepca.txt.
 

+       disable_mtrr_cleanup [X86]
+       enable_mtrr_cleanup [X86]
+                       The kernel tries to adjust MTRR layout from continuous
+                       to discrete, to make X server driver able to add WB
+                       entry later. This parameter enables/disables that.
+
+       mtrr_chunk_size=nn[KMG] [X86]
+                       used for mtrr cleanup. It is largest continous chunk
+                       that could hold holes aka. UC entries.
+
+       mtrr_gran_size=nn[KMG] [X86]
+                       Used for mtrr cleanup. It is granularity of mtrr block.
+                       Default is 1.
+                       Large value could prevent small alignment from
+                       using up MTRRs.
+
+       mtrr_spare_reg_nr=n [X86]
+                       Format: <integer>
+                       Range: 0,7 : spare reg number
+                       Default : 1
+                       Used for mtrr cleanup. It is spare mtrr entries number.
+                       Set to 2 or more if your graphical card needs more.
+

        disable_mtrr_trim [X86, Intel and AMD only]
                        By default the kernel will trim any uncacheable
                        memory out of your available memory pool based on
        disable_mtrr_trim [X86, Intel and AMD only]
                        By default the kernel will trim any uncacheable
                        memory out of your available memory pool based on


@@ -627,15 +665,14 @@ and is between 256 and 4096 characters. It is defined in the file
        eata=           [HW,SCSI]
 
        edd=            [EDD]
        eata=           [HW,SCSI]
 
        edd=            [EDD]

-                       Format: {"of[f]" | "sk[ipmbr]"}
-                       See comment in arch/i386/boot/edd.S
+                       Format: {"off" | "on" | "skip[mbr]"}

 
        eisa_irq_edge=  [PARISC,HW]
                        See header of drivers/parisc/eisa.c.
 
        elanfreq=       [X86-32]
                        See comment before function elanfreq_setup() in
 
        eisa_irq_edge=  [PARISC,HW]
                        See header of drivers/parisc/eisa.c.
 
        elanfreq=       [X86-32]
                        See comment before function elanfreq_setup() in

-                       arch/i386/kernel/cpu/cpufreq/elanfreq.c.
+                       arch/x86/kernel/cpu/cpufreq/elanfreq.c.

 
        elevator=       [IOSCHED]
                        Format: {"anticipatory" | "cfq" | "deadline" | "noop"}
 
        elevator=       [IOSCHED]
                        Format: {"anticipatory" | "cfq" | "deadline" | "noop"}


@@ -683,6 +720,12 @@ and is between 256 and 4096 characters. It is defined in the file
        floppy=         [HW]
                        See Documentation/floppy.txt.
 
        floppy=         [HW]
                        See Documentation/floppy.txt.
 

+       force_pal_cache_flush
+                       [IA-64] Avoid check_sal_cache_flush which may hang on
+                       buggy SAL_CACHE_FLUSH implementations. Using this
+                       parameter will force ia64_sal_cache_flush to call
+                       ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.
+

        gamecon.map[2|3]=
                        [HW,JOY] Multisystem joystick and NES/SNES/PSX pad
                        support via parallel port (up to 5 devices per port)
        gamecon.map[2|3]=
                        [HW,JOY] Multisystem joystick and NES/SNES/PSX pad
                        support via parallel port (up to 5 devices per port)


@@ -1088,9 +1131,6 @@ and is between 256 and 4096 characters. It is defined in the file
        mac5380=        [HW,SCSI] Format:
                        <can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
 
        mac5380=        [HW,SCSI] Format:
                        <can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
 

-       mac53c9x=       [HW,SCSI] Format:
-                       <num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
-

        machvec=        [IA64] Force the use of a particular machine-vector
                        (machvec) in a generic kernel.
                        Example: machvec=hpzx1_swiotlb
        machvec=        [IA64] Force the use of a particular machine-vector
                        (machvec) in a generic kernel.
                        Example: machvec=hpzx1_swiotlb


@@ -1389,6 +1429,13 @@ and is between 256 and 4096 characters. It is defined in the file
 
        nr_uarts=       [SERIAL] maximum number of UARTs to be registered.
 
 
        nr_uarts=       [SERIAL] maximum number of UARTs to be registered.
 

+       olpc_ec_timeout= [OLPC] ms delay when issuing EC commands
+                       Rather than timing out after 20 ms if an EC
+                       command is not properly ACKed, override the length
+                       of the timeout.  We have interrupts disabled while
+                       waiting for the ACK, so if this is set too high
+                       interrupts *may* be lost!
+

        opl3=           [HW,OSS]
                        Format: <io>
 
        opl3=           [HW,OSS]
                        Format: <io>
 


@@ -1512,6 +1559,8 @@ and is between 256 and 4096 characters. It is defined in the file
                                This is normally done in pci_enable_device(),
                                so this option is a temporary workaround
                                for broken drivers that don't call it.
                                This is normally done in pci_enable_device(),
                                so this option is a temporary workaround
                                for broken drivers that don't call it.

+               skip_isa_align  [X86] do not align io start addr, so can
+                               handle more pci cards

                firmware        [ARM] Do not re-enumerate the bus but instead
                                just use the configuration from the
                                bootloader. This is currently used on
                firmware        [ARM] Do not re-enumerate the bus but instead
                                just use the configuration from the
                                bootloader. This is currently used on


@@ -1664,6 +1713,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: <reboot_mode>[,<reboot_mode2>[,...]]
                        See arch/*/kernel/reboot.c or arch/*/kernel/process.c                   
 
                        Format: <reboot_mode>[,<reboot_mode2>[,...]]
                        See arch/*/kernel/reboot.c or arch/*/kernel/process.c                   
 

+       relax_domain_level=
+                       [KNL, SMP] Set scheduler's default relax_domain_level.
+                       See Documentation/cpusets.txt.
+

        reserve=        [KNL,BUGS] Force the kernel to ignore some iomem area
 
        reservetop=     [X86-32]
        reserve=        [KNL,BUGS] Force the kernel to ignore some iomem area
 
        reservetop=     [X86-32]


@@ -2097,6 +2150,9 @@ and is between 256 and 4096 characters. It is defined in the file
        usbhid.mousepoll=
                        [USBHID] The interval which mice are to be polled at.
 
        usbhid.mousepoll=
                        [USBHID] The interval which mice are to be polled at.
 

+       add_efi_memmap  [EFI; x86-32,X86-64] Include EFI memory map in
+                       kernel's map of available physical RAM.
+

        vdso=           [X86-32,SH,x86-64]
                        vdso=2: enable compat VDSO (default with COMPAT_VDSO)
                        vdso=1: enable VDSO (default)
        vdso=           [X86-32,SH,x86-64]
                        vdso=2: enable compat VDSO (default with COMPAT_VDSO)
                        vdso=1: enable VDSO (default)