docs: alphabetize entries in kernel-parameters.txt
Move entries to be in alpha order as specified near the beginning of this file. Clean up some whitespace and line-length miscues. Add '=' to "selinux" option syntax. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -153,60 +153,6 @@ and is between 256 and 4096 characters. It is defined in the file
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1,0: use 1st APIC table
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1,0: use 1st APIC table
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default: 0
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default: 0
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acpi_sleep= [HW,ACPI] Sleep options
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Format: { s3_bios, s3_mode, s3_beep, s4_nohwsig,
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old_ordering, s4_nonvs }
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See Documentation/power/video.txt for information on
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s3_bios and s3_mode.
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s3_beep is for debugging; it makes the PC's speaker beep
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as soon as the kernel's real-mode entry point is called.
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s4_nohwsig prevents ACPI hardware signature from being
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used during resume from hibernation.
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old_ordering causes the ACPI 1.0 ordering of the _PTS
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control method, with respect to putting devices into
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low power states, to be enforced (the ACPI 2.0 ordering
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of _PTS is used by default).
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s4_nonvs prevents the kernel from saving/restoring the
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ACPI NVS memory during hibernation.
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acpi_sci= [HW,ACPI] ACPI System Control Interrupt trigger mode
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Format: { level | edge | high | low }
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acpi_irq_balance [HW,ACPI]
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ACPI will balance active IRQs
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default in APIC mode
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acpi_irq_nobalance [HW,ACPI]
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ACPI will not move active IRQs (default)
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default in PIC mode
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acpi_irq_pci= [HW,ACPI] If irq_balance, clear listed IRQs for
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use by PCI
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Format: <irq>,<irq>...
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acpi_irq_isa= [HW,ACPI] If irq_balance, mark listed IRQs used by ISA
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Format: <irq>,<irq>...
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acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT
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acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS
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Format: To spoof as Windows 98: ="Microsoft Windows"
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acpi_osi= [HW,ACPI] Modify list of supported OS interface strings
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acpi_osi="string1" # add string1 -- only one string
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acpi_osi="!string2" # remove built-in string2
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acpi_osi= # disable all strings
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acpi_serialize [HW,ACPI] force serialization of AML methods
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acpi_skip_timer_override [HW,ACPI]
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Recognize and ignore IRQ0/pin2 Interrupt Override.
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For broken nForce2 BIOS resulting in XT-PIC timer.
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acpi_use_timer_override [HW,ACPI]
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Use timer override. For some broken Nvidia NF5 boards
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that require a timer override, but don't have
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HPET
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acpi_backlight= [HW,ACPI]
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acpi_backlight= [HW,ACPI]
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acpi_backlight=vendor
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acpi_backlight=vendor
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acpi_backlight=video
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acpi_backlight=video
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@ -214,11 +160,6 @@ and is between 256 and 4096 characters. It is defined in the file
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(e.g. thinkpad_acpi, sony_acpi, etc.) instead
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(e.g. thinkpad_acpi, sony_acpi, etc.) instead
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of the ACPI video.ko driver.
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of the ACPI video.ko driver.
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acpi_display_output= [HW,ACPI]
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acpi_display_output=vendor
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acpi_display_output=video
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See above.
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acpi.debug_layer= [HW,ACPI,ACPI_DEBUG]
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acpi.debug_layer= [HW,ACPI,ACPI_DEBUG]
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acpi.debug_level= [HW,ACPI,ACPI_DEBUG]
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acpi.debug_level= [HW,ACPI,ACPI_DEBUG]
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Format: <int>
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Format: <int>
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@ -247,6 +188,41 @@ and is between 256 and 4096 characters. It is defined in the file
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unusable. The "log_buf_len" parameter may be useful
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unusable. The "log_buf_len" parameter may be useful
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if you need to capture more output.
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if you need to capture more output.
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acpi_display_output= [HW,ACPI]
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acpi_display_output=vendor
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acpi_display_output=video
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See above.
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acpi_irq_balance [HW,ACPI]
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ACPI will balance active IRQs
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default in APIC mode
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acpi_irq_nobalance [HW,ACPI]
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ACPI will not move active IRQs (default)
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default in PIC mode
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acpi_irq_isa= [HW,ACPI] If irq_balance, mark listed IRQs used by ISA
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Format: <irq>,<irq>...
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acpi_irq_pci= [HW,ACPI] If irq_balance, clear listed IRQs for
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use by PCI
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Format: <irq>,<irq>...
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acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT
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acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS
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Format: To spoof as Windows 98: ="Microsoft Windows"
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acpi_osi= [HW,ACPI] Modify list of supported OS interface strings
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acpi_osi="string1" # add string1 -- only one string
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acpi_osi="!string2" # remove built-in string2
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acpi_osi= # disable all strings
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acpi_pm_good [X86-32,X86-64]
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Override the pmtimer bug detection: force the kernel
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to assume that this machine's pmtimer latches its value
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and always returns good values.
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acpi.power_nocheck= [HW,ACPI]
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acpi.power_nocheck= [HW,ACPI]
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Format: 1/0 enable/disable the check of power state.
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Format: 1/0 enable/disable the check of power state.
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On some bogus BIOS the _PSC object/_STA object of
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On some bogus BIOS the _PSC object/_STA object of
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@ -255,11 +231,6 @@ and is between 256 and 4096 characters. It is defined in the file
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power state again in power transition.
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power state again in power transition.
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1 : disable the power state check
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1 : disable the power state check
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acpi_pm_good [X86-32,X86-64]
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Override the pmtimer bug detection: force the kernel
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to assume that this machine's pmtimer latches its value
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and always returns good values.
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acpi_enforce_resources= [ACPI]
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acpi_enforce_resources= [ACPI]
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{ strict | lax | no }
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{ strict | lax | no }
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Check for resource conflicts between native drivers
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Check for resource conflicts between native drivers
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@ -276,22 +247,6 @@ and is between 256 and 4096 characters. It is defined in the file
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no: ACPI OperationRegions are not marked as reserved,
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no: ACPI OperationRegions are not marked as reserved,
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no further checks are performed.
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no further checks are performed.
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agp= [AGP]
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{ off | try_unsupported }
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off: disable AGP support
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try_unsupported: try to drive unsupported chipsets
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(may crash computer or cause data corruption)
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enable_timer_pin_1 [i386,x86-64]
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Enable PIN 1 of APIC timer
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Can be useful to work around chipset bugs
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(in particular on some ATI chipsets).
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The kernel tries to set a reasonable default.
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disable_timer_pin_1 [i386,x86-64]
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Disable PIN 1 of APIC timer
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Can be useful to work around chipset bugs.
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ad1848= [HW,OSS]
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ad1848= [HW,OSS]
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Format: <io>,<irq>,<dma>,<dma2>,<type>
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Format: <io>,<irq>,<dma>,<dma2>,<type>
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@ -305,6 +260,12 @@ and is between 256 and 4096 characters. It is defined in the file
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Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq>
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Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq>
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See also header of sound/oss/aedsp16.c.
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See also header of sound/oss/aedsp16.c.
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agp= [AGP]
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{ off | try_unsupported }
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off: disable AGP support
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try_unsupported: try to drive unsupported chipsets
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(may crash computer or cause data corruption)
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aha152x= [HW,SCSI]
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aha152x= [HW,SCSI]
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See Documentation/scsi/aha152x.txt.
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See Documentation/scsi/aha152x.txt.
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@ -432,12 +393,6 @@ and is between 256 and 4096 characters. It is defined in the file
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possible to determine what the correct size should be.
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possible to determine what the correct size should be.
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This option provides an override for these situations.
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This option provides an override for these situations.
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security= [SECURITY] Choose a security module to enable at boot.
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If this boot parameter is not specified, only the first
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security module asking for security registration will be
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loaded. An invalid security module name will be treated
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as if no module has been chosen.
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capability.disable=
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capability.disable=
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[SECURITY] Disable capabilities. This would normally
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[SECURITY] Disable capabilities. This would normally
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be used only if an alternative security model is to be
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be used only if an alternative security model is to be
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@ -509,24 +464,6 @@ and is between 256 and 4096 characters. It is defined in the file
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Range: 0 - 8192
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Range: 0 - 8192
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Default: 64
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Default: 64
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dma_debug=off If the kernel is compiled with DMA_API_DEBUG support
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this option disables the debugging code at boot.
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dma_debug_entries=<number>
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This option allows to tune the number of preallocated
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entries for DMA-API debugging code. One entry is
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required per DMA-API allocation. Use this if the
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DMA-API debugging code disables itself because the
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architectural default is too low.
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hpet= [X86-32,HPET] option to control HPET usage
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Format: { enable (default) | disable | force |
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verbose }
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disable: disable HPET and use PIT instead
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force: allow force enabled of undocumented chips (ICH4,
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VIA, nVidia)
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verbose: show contents of HPET registers during setup
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com20020= [HW,NET] ARCnet - COM20020 chipset
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com20020= [HW,NET] ARCnet - COM20020 chipset
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Format:
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Format:
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<io>[,<irq>[,<nodeID>[,<backplane>[,<ckp>[,<timeout>]]]]]
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<io>[,<irq>[,<nodeID>[,<backplane>[,<ckp>[,<timeout>]]]]]
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console=brl,ttyS0
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console=brl,ttyS0
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For now, only VisioBraille is supported.
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For now, only VisioBraille is supported.
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earlycon= [KNL] Output early console device and options.
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uart[8250],io,<addr>[,options]
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uart[8250],mmio,<addr>[,options]
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Start an early, polled-mode console on the 8250/16550
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UART at the specified I/O port or MMIO address.
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The options are the same as for ttyS, above.
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no_console_suspend
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[HW] Never suspend the console
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Disable suspending of consoles during suspend and
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hibernate operations. Once disabled, debugging
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messages can reach various consoles while the rest
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of the system is being put to sleep (ie, while
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debugging driver suspend/resume hooks). This may
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not work reliably with all consoles, but is known
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to work with serial and VGA consoles.
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coredump_filter=
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coredump_filter=
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[KNL] Change the default value for
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[KNL] Change the default value for
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/proc/<pid>/coredump_filter.
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/proc/<pid>/coredump_filter.
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@ -643,30 +563,13 @@ and is between 256 and 4096 characters. It is defined in the file
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Format: <area>[,<node>]
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Format: <area>[,<node>]
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See also Documentation/networking/decnet.txt.
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See also Documentation/networking/decnet.txt.
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vt.default_blu= [VT]
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default_hugepagesz=
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Format: <blue0>,<blue1>,<blue2>,...,<blue15>
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[same as hugepagesz=] The size of the default
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Change the default blue palette of the console.
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HugeTLB page size. This is the size represented by
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This is a 16-member array composed of values
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the legacy /proc/ hugepages APIs, used for SHM, and
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ranging from 0-255.
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default size when mounting hugetlbfs filesystems.
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Defaults to the default architecture's huge page size
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vt.default_grn= [VT]
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if not specified.
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Format: <green0>,<green1>,<green2>,...,<green15>
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Change the default green palette of the console.
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This is a 16-member array composed of values
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ranging from 0-255.
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vt.default_red= [VT]
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Format: <red0>,<red1>,<red2>,...,<red15>
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Change the default red palette of the console.
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This is a 16-member array composed of values
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ranging from 0-255.
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vt.default_utf8=
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[VT]
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Format=<0|1>
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Set system-wide default UTF-8 mode for all tty's.
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Default is 1, i.e. UTF-8 mode is enabled for all
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newly opened terminals.
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dhash_entries= [KNL]
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dhash_entries= [KNL]
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Set number of hash buckets for dentry cache.
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Set number of hash buckets for dentry cache.
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@ -679,27 +582,9 @@ and is between 256 and 4096 characters. It is defined in the file
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Documentation/serial/digiepca.txt.
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Documentation/serial/digiepca.txt.
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disable_mtrr_cleanup [X86]
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disable_mtrr_cleanup [X86]
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enable_mtrr_cleanup [X86]
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The kernel tries to adjust MTRR layout from continuous
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The kernel tries to adjust MTRR layout from continuous
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to discrete, to make X server driver able to add WB
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to discrete, to make X server driver able to add WB
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entry later. This parameter enables/disables that.
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entry later. This parameter disables that.
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mtrr_chunk_size=nn[KMG] [X86]
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used for mtrr cleanup. It is largest continous chunk
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that could hold holes aka. UC entries.
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mtrr_gran_size=nn[KMG] [X86]
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Used for mtrr cleanup. It is granularity of mtrr block.
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Default is 1.
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Large value could prevent small alignment from
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using up MTRRs.
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mtrr_spare_reg_nr=n [X86]
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Format: <integer>
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Range: 0,7 : spare reg number
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Default : 1
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Used for mtrr cleanup. It is spare mtrr entries number.
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Set to 2 or more if your graphical card needs more.
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disable_mtrr_trim [X86, Intel and AMD only]
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disable_mtrr_trim [X86, Intel and AMD only]
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By default the kernel will trim any uncacheable
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By default the kernel will trim any uncacheable
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@ -707,12 +592,38 @@ and is between 256 and 4096 characters. It is defined in the file
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MTRR settings. This parameter disables that behavior,
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MTRR settings. This parameter disables that behavior,
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possibly causing your machine to run very slowly.
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possibly causing your machine to run very slowly.
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disable_timer_pin_1 [i386,x86-64]
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Disable PIN 1 of APIC timer
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Can be useful to work around chipset bugs.
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dmasound= [HW,OSS] Sound subsystem buffers
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dmasound= [HW,OSS] Sound subsystem buffers
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dma_debug=off If the kernel is compiled with DMA_API_DEBUG support,
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this option disables the debugging code at boot.
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dma_debug_entries=<number>
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This option allows to tune the number of preallocated
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entries for DMA-API debugging code. One entry is
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required per DMA-API allocation. Use this if the
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DMA-API debugging code disables itself because the
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architectural default is too low.
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dscc4.setup= [NET]
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dscc4.setup= [NET]
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dtc3181e= [HW,SCSI]
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dtc3181e= [HW,SCSI]
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dynamic_printk Enables pr_debug()/dev_dbg() calls if
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CONFIG_DYNAMIC_PRINTK_DEBUG has been enabled.
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These can also be switched on/off via
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<debugfs>/dynamic_printk/modules
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earlycon= [KNL] Output early console device and options.
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uart[8250],io,<addr>[,options]
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uart[8250],mmio,<addr>[,options]
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Start an early, polled-mode console on the 8250/16550
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UART at the specified I/O port or MMIO address.
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The options are the same as for ttyS, above.
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earlyprintk= [X86-32,X86-64,SH,BLACKFIN]
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earlyprintk= [X86-32,X86-64,SH,BLACKFIN]
|
||||||
earlyprintk=vga
|
earlyprintk=vga
|
||||||
earlyprintk=serial[,ttySn[,baudrate]]
|
earlyprintk=serial[,ttySn[,baudrate]]
|
||||||
|
@ -754,6 +665,17 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
pass this option to capture kernel.
|
pass this option to capture kernel.
|
||||||
See Documentation/kdump/kdump.txt for details.
|
See Documentation/kdump/kdump.txt for details.
|
||||||
|
|
||||||
|
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 that.
|
||||||
|
|
||||||
|
enable_timer_pin_1 [i386,x86-64]
|
||||||
|
Enable PIN 1 of APIC timer
|
||||||
|
Can be useful to work around chipset bugs
|
||||||
|
(in particular on some ATI chipsets).
|
||||||
|
The kernel tries to set a reasonable default.
|
||||||
|
|
||||||
enforcing [SELINUX] Set initial enforcing status.
|
enforcing [SELINUX] Set initial enforcing status.
|
||||||
Format: {"0" | "1"}
|
Format: {"0" | "1"}
|
||||||
See security/selinux/Kconfig help text.
|
See security/selinux/Kconfig help text.
|
||||||
|
@ -841,6 +763,16 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
hisax= [HW,ISDN]
|
hisax= [HW,ISDN]
|
||||||
See Documentation/isdn/README.HiSax.
|
See Documentation/isdn/README.HiSax.
|
||||||
|
|
||||||
|
hlt [BUGS=ARM,SH]
|
||||||
|
|
||||||
|
hpet= [X86-32,HPET] option to control HPET usage
|
||||||
|
Format: { enable (default) | disable | force |
|
||||||
|
verbose }
|
||||||
|
disable: disable HPET and use PIT instead
|
||||||
|
force: allow force enabled of undocumented chips (ICH4,
|
||||||
|
VIA, nVidia)
|
||||||
|
verbose: show contents of HPET registers during setup
|
||||||
|
|
||||||
hugepages= [HW,X86-32,IA-64] HugeTLB pages to allocate at boot.
|
hugepages= [HW,X86-32,IA-64] HugeTLB pages to allocate at boot.
|
||||||
hugepagesz= [HW,IA-64,PPC,X86-64] The size of the HugeTLB pages.
|
hugepagesz= [HW,IA-64,PPC,X86-64] The size of the HugeTLB pages.
|
||||||
On x86-64 and powerpc, this option can be specified
|
On x86-64 and powerpc, this option can be specified
|
||||||
|
@ -850,15 +782,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
(when the CPU supports the "pdpe1gb" cpuinfo flag)
|
(when the CPU supports the "pdpe1gb" cpuinfo flag)
|
||||||
Note that 1GB pages can only be allocated at boot time
|
Note that 1GB pages can only be allocated at boot time
|
||||||
using hugepages= and not freed afterwards.
|
using hugepages= and not freed afterwards.
|
||||||
default_hugepagesz=
|
|
||||||
[same as hugepagesz=] The size of the default
|
|
||||||
HugeTLB page size. This is the size represented by
|
|
||||||
the legacy /proc/ hugepages APIs, used for SHM, and
|
|
||||||
default size when mounting hugetlbfs filesystems.
|
|
||||||
Defaults to the default architecture's huge page size
|
|
||||||
if not specified.
|
|
||||||
|
|
||||||
hlt [BUGS=ARM,SH]
|
|
||||||
|
|
||||||
hvc_iucv= [S390] Number of z/VM IUCV hypervisor console (HVC)
|
hvc_iucv= [S390] Number of z/VM IUCV hypervisor console (HVC)
|
||||||
terminal devices. Valid values: 0..8
|
terminal devices. Valid values: 0..8
|
||||||
|
@ -919,6 +842,9 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed
|
idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed
|
||||||
See Documentation/ide/ide.txt.
|
See Documentation/ide/ide.txt.
|
||||||
|
|
||||||
|
ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
|
||||||
|
Claim all unknown PCI IDE storage controllers.
|
||||||
|
|
||||||
idle= [X86]
|
idle= [X86]
|
||||||
Format: idle=poll, idle=mwait, idle=halt, idle=nomwait
|
Format: idle=poll, idle=mwait, idle=halt, idle=nomwait
|
||||||
Poll forces a polling idle loop that can slightly
|
Poll forces a polling idle loop that can slightly
|
||||||
|
@ -934,9 +860,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
In such case C2/C3 won't be used again.
|
In such case C2/C3 won't be used again.
|
||||||
idle=nomwait: Disable mwait for CPU C-states
|
idle=nomwait: Disable mwait for CPU C-states
|
||||||
|
|
||||||
ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
|
|
||||||
Claim all unknown PCI IDE storage controllers.
|
|
||||||
|
|
||||||
ignore_loglevel [KNL]
|
ignore_loglevel [KNL]
|
||||||
Ignore loglevel setting - this will print /all/
|
Ignore loglevel setting - this will print /all/
|
||||||
kernel messages to the console. Useful for debugging.
|
kernel messages to the console. Useful for debugging.
|
||||||
|
@ -970,25 +893,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
inport.irq= [HW] Inport (ATI XL and Microsoft) busmouse driver
|
inport.irq= [HW] Inport (ATI XL and Microsoft) busmouse driver
|
||||||
Format: <irq>
|
Format: <irq>
|
||||||
|
|
||||||
inttest= [IA64]
|
|
||||||
|
|
||||||
iomem= Disable strict checking of access to MMIO memory
|
|
||||||
strict regions from userspace.
|
|
||||||
relaxed
|
|
||||||
|
|
||||||
iommu= [x86]
|
|
||||||
off
|
|
||||||
force
|
|
||||||
noforce
|
|
||||||
biomerge
|
|
||||||
panic
|
|
||||||
nopanic
|
|
||||||
merge
|
|
||||||
nomerge
|
|
||||||
forcesac
|
|
||||||
soft
|
|
||||||
|
|
||||||
|
|
||||||
intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
|
intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
|
||||||
on
|
on
|
||||||
Enable intel iommu driver.
|
Enable intel iommu driver.
|
||||||
|
@ -1012,6 +916,28 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
result in a hardware IOTLB flush operation as opposed
|
result in a hardware IOTLB flush operation as opposed
|
||||||
to batching them for performance.
|
to batching them for performance.
|
||||||
|
|
||||||
|
inttest= [IA64]
|
||||||
|
|
||||||
|
iomem= Disable strict checking of access to MMIO memory
|
||||||
|
strict regions from userspace.
|
||||||
|
relaxed
|
||||||
|
|
||||||
|
iommu= [x86]
|
||||||
|
off
|
||||||
|
force
|
||||||
|
noforce
|
||||||
|
biomerge
|
||||||
|
panic
|
||||||
|
nopanic
|
||||||
|
merge
|
||||||
|
nomerge
|
||||||
|
forcesac
|
||||||
|
soft
|
||||||
|
|
||||||
|
io7= [HW] IO7 for Marvel based alpha systems
|
||||||
|
See comment before marvel_specify_io7 in
|
||||||
|
arch/alpha/kernel/core_marvel.c.
|
||||||
|
|
||||||
io_delay= [X86-32,X86-64] I/O delay method
|
io_delay= [X86-32,X86-64] I/O delay method
|
||||||
0x80
|
0x80
|
||||||
Standard port 0x80 based delay
|
Standard port 0x80 based delay
|
||||||
|
@ -1022,10 +948,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
none
|
none
|
||||||
No delay
|
No delay
|
||||||
|
|
||||||
io7= [HW] IO7 for Marvel based alpha systems
|
|
||||||
See comment before marvel_specify_io7 in
|
|
||||||
arch/alpha/kernel/core_marvel.c.
|
|
||||||
|
|
||||||
ip= [IP_PNP]
|
ip= [IP_PNP]
|
||||||
See Documentation/filesystems/nfsroot.txt.
|
See Documentation/filesystems/nfsroot.txt.
|
||||||
|
|
||||||
|
@ -1036,12 +958,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
|
ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
|
||||||
See header of drivers/scsi/ips.c.
|
See header of drivers/scsi/ips.c.
|
||||||
|
|
||||||
ports= [IP_VS_FTP] IPVS ftp helper module
|
|
||||||
Default is 21.
|
|
||||||
Up to 8 (IP_VS_APP_MAX_PORTS) ports
|
|
||||||
may be specified.
|
|
||||||
Format: <port>,<port>....
|
|
||||||
|
|
||||||
irqfixup [HW]
|
irqfixup [HW]
|
||||||
When an interrupt is not handled search all handlers
|
When an interrupt is not handled search all handlers
|
||||||
for it. Intended to get systems with badly broken
|
for it. Intended to get systems with badly broken
|
||||||
|
@ -1082,6 +998,8 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
js= [HW,JOY] Analog joystick
|
js= [HW,JOY] Analog joystick
|
||||||
See Documentation/input/joystick.txt.
|
See Documentation/input/joystick.txt.
|
||||||
|
|
||||||
|
keepinitrd [HW,ARM]
|
||||||
|
|
||||||
kernelcore=nn[KMG] [KNL,X86-32,IA-64,PPC,X86-64] This parameter
|
kernelcore=nn[KMG] [KNL,X86-32,IA-64,PPC,X86-64] This parameter
|
||||||
specifies the amount of memory usable by the kernel
|
specifies the amount of memory usable by the kernel
|
||||||
for non-movable allocations. The requested amount is
|
for non-movable allocations. The requested amount is
|
||||||
|
@ -1107,21 +1025,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
higher than default (KMEMTRACE_N_SUBBUFS in code) if
|
higher than default (KMEMTRACE_N_SUBBUFS in code) if
|
||||||
you experience buffer overruns.
|
you experience buffer overruns.
|
||||||
|
|
||||||
movablecore=nn[KMG] [KNL,X86-32,IA-64,PPC,X86-64] This parameter
|
|
||||||
is similar to kernelcore except it specifies the
|
|
||||||
amount of memory used for migratable allocations.
|
|
||||||
If both kernelcore and movablecore is specified,
|
|
||||||
then kernelcore will be at *least* the specified
|
|
||||||
value but may be more. If movablecore on its own
|
|
||||||
is specified, the administrator must be careful
|
|
||||||
that the amount of memory usable for all allocations
|
|
||||||
is not too small.
|
|
||||||
|
|
||||||
keepinitrd [HW,ARM]
|
|
||||||
|
|
||||||
kstack=N [X86-32,X86-64] Print N words from the kernel stack
|
|
||||||
in oops dumps.
|
|
||||||
|
|
||||||
kgdboc= [HW] kgdb over consoles.
|
kgdboc= [HW] kgdb over consoles.
|
||||||
Requires a tty driver that supports console polling.
|
Requires a tty driver that supports console polling.
|
||||||
(only serial suported for now)
|
(only serial suported for now)
|
||||||
|
@ -1131,6 +1034,9 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
Configure the RouterBoard 532 series on-chip
|
Configure the RouterBoard 532 series on-chip
|
||||||
Ethernet adapter MAC address.
|
Ethernet adapter MAC address.
|
||||||
|
|
||||||
|
kstack=N [X86-32,X86-64] Print N words from the kernel stack
|
||||||
|
in oops dumps.
|
||||||
|
|
||||||
l2cr= [PPC]
|
l2cr= [PPC]
|
||||||
|
|
||||||
l3cr= [PPC]
|
l3cr= [PPC]
|
||||||
|
@ -1276,9 +1182,8 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
(machvec) in a generic kernel.
|
(machvec) in a generic kernel.
|
||||||
Example: machvec=hpzx1_swiotlb
|
Example: machvec=hpzx1_swiotlb
|
||||||
|
|
||||||
max_loop= [LOOP] Maximum number of loopback devices that can
|
max_addr=nn[KMG] [KNL,BOOT,ia64] All physical memory greater
|
||||||
be mounted
|
than or equal to this physical address is ignored.
|
||||||
Format: <1-256>
|
|
||||||
|
|
||||||
maxcpus= [SMP] Maximum number of processors that an SMP kernel
|
maxcpus= [SMP] Maximum number of processors that an SMP kernel
|
||||||
should make use of. maxcpus=n : n >= 0 limits the
|
should make use of. maxcpus=n : n >= 0 limits the
|
||||||
|
@ -1286,8 +1191,9 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
it is equivalent to "nosmp", which also disables
|
it is equivalent to "nosmp", which also disables
|
||||||
the IO APIC.
|
the IO APIC.
|
||||||
|
|
||||||
max_addr=nn[KMG] [KNL,BOOT,ia64] All physical memory greater than
|
max_loop= [LOOP] Maximum number of loopback devices that can
|
||||||
or equal to this physical address is ignored.
|
be mounted
|
||||||
|
Format: <1-256>
|
||||||
|
|
||||||
max_luns= [SCSI] Maximum number of LUNs to probe.
|
max_luns= [SCSI] Maximum number of LUNs to probe.
|
||||||
Should be between 1 and 2^32-1.
|
Should be between 1 and 2^32-1.
|
||||||
|
@ -1414,6 +1320,16 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
mousedev.yres= [MOUSE] Vertical screen resolution, used for devices
|
mousedev.yres= [MOUSE] Vertical screen resolution, used for devices
|
||||||
reporting absolute coordinates, such as tablets
|
reporting absolute coordinates, such as tablets
|
||||||
|
|
||||||
|
movablecore=nn[KMG] [KNL,X86-32,IA-64,PPC,X86-64] This parameter
|
||||||
|
is similar to kernelcore except it specifies the
|
||||||
|
amount of memory used for migratable allocations.
|
||||||
|
If both kernelcore and movablecore is specified,
|
||||||
|
then kernelcore will be at *least* the specified
|
||||||
|
value but may be more. If movablecore on its own
|
||||||
|
is specified, the administrator must be careful
|
||||||
|
that the amount of memory usable for all allocations
|
||||||
|
is not too small.
|
||||||
|
|
||||||
mpu401= [HW,OSS]
|
mpu401= [HW,OSS]
|
||||||
Format: <io>,<irq>
|
Format: <io>,<irq>
|
||||||
|
|
||||||
|
@ -1435,6 +1351,23 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
[HW] Make the MicroTouch USB driver use raw coordinates
|
[HW] Make the MicroTouch USB driver use raw coordinates
|
||||||
('y', default) or cooked coordinates ('n')
|
('y', default) or cooked coordinates ('n')
|
||||||
|
|
||||||
|
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.
|
||||||
|
|
||||||
n2= [NET] SDL Inc. RISCom/N2 synchronous serial card
|
n2= [NET] SDL Inc. RISCom/N2 synchronous serial card
|
||||||
|
|
||||||
NCR_D700= [HW,SCSI]
|
NCR_D700= [HW,SCSI]
|
||||||
|
@ -1495,11 +1428,13 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
0 - turn nmi_watchdog off
|
0 - turn nmi_watchdog off
|
||||||
1 - use the IO-APIC timer for the NMI watchdog
|
1 - use the IO-APIC timer for the NMI watchdog
|
||||||
2 - use the local APIC for the NMI watchdog using
|
2 - use the local APIC for the NMI watchdog using
|
||||||
a performance counter. Note: This will use one performance
|
a performance counter. Note: This will use one
|
||||||
counter and the local APIC's performance vector.
|
performance counter and the local APIC's performance
|
||||||
When panic is specified panic when an NMI watchdog timeout occurs.
|
vector.
|
||||||
This is useful when you use a panic=... timeout and need the box
|
When panic is specified, panic when an NMI watchdog
|
||||||
quickly up again.
|
timeout occurs.
|
||||||
|
This is useful when you use a panic=... timeout and
|
||||||
|
need the box quickly up again.
|
||||||
Instead of 1 and 2 it is possible to use the following
|
Instead of 1 and 2 it is possible to use the following
|
||||||
symbolic names: lapic and ioapic
|
symbolic names: lapic and ioapic
|
||||||
Example: nmi_watchdog=2 or nmi_watchdog=panic,lapic
|
Example: nmi_watchdog=2 or nmi_watchdog=panic,lapic
|
||||||
|
@ -1508,6 +1443,16 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
emulation library even if a 387 maths coprocessor
|
emulation library even if a 387 maths coprocessor
|
||||||
is present.
|
is present.
|
||||||
|
|
||||||
|
no_console_suspend
|
||||||
|
[HW] Never suspend the console
|
||||||
|
Disable suspending of consoles during suspend and
|
||||||
|
hibernate operations. Once disabled, debugging
|
||||||
|
messages can reach various consoles while the rest
|
||||||
|
of the system is being put to sleep (ie, while
|
||||||
|
debugging driver suspend/resume hooks). This may
|
||||||
|
not work reliably with all consoles, but is known
|
||||||
|
to work with serial and VGA consoles.
|
||||||
|
|
||||||
noaliencache [MM, NUMA, SLAB] Disables the allocation of alien
|
noaliencache [MM, NUMA, SLAB] Disables the allocation of alien
|
||||||
caches in the slab allocator. Saves per-node memory,
|
caches in the slab allocator. Saves per-node memory,
|
||||||
but will impact performance.
|
but will impact performance.
|
||||||
|
@ -1522,6 +1467,8 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
|
|
||||||
nocache [ARM]
|
nocache [ARM]
|
||||||
|
|
||||||
|
noclflush [BUGS=X86] Don't use the CLFLUSH instruction
|
||||||
|
|
||||||
nodelayacct [KNL] Disable per-task delay accounting
|
nodelayacct [KNL] Disable per-task delay accounting
|
||||||
|
|
||||||
nodisconnect [HW,SCSI,M68K] Disables SCSI disconnects.
|
nodisconnect [HW,SCSI,M68K] Disables SCSI disconnects.
|
||||||
|
@ -1550,8 +1497,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
register save and restore. The kernel will only save
|
register save and restore. The kernel will only save
|
||||||
legacy floating-point registers on task switch.
|
legacy floating-point registers on task switch.
|
||||||
|
|
||||||
noclflush [BUGS=X86] Don't use the CLFLUSH instruction
|
|
||||||
|
|
||||||
nohlt [BUGS=ARM,SH] Tells the kernel that the sleep(SH) or
|
nohlt [BUGS=ARM,SH] Tells the kernel that the sleep(SH) or
|
||||||
wfi(ARM) instruction doesn't work correctly and not to
|
wfi(ARM) instruction doesn't work correctly and not to
|
||||||
use it. This is also useful when using JTAG debugger.
|
use it. This is also useful when using JTAG debugger.
|
||||||
|
@ -1596,12 +1541,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
|
|
||||||
nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
|
nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
|
||||||
|
|
||||||
nox2apic [X86-64,APIC] Do not enable x2APIC mode.
|
|
||||||
|
|
||||||
x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of
|
|
||||||
default x2apic cluster mode on platforms
|
|
||||||
supporting x2apic.
|
|
||||||
|
|
||||||
noltlbs [PPC] Do not use large page/tlb entries for kernel
|
noltlbs [PPC] Do not use large page/tlb entries for kernel
|
||||||
lowmem mapping on PPC40x.
|
lowmem mapping on PPC40x.
|
||||||
|
|
||||||
|
@ -1612,6 +1551,9 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
nomfgpt [X86-32] Disable Multi-Function General Purpose
|
nomfgpt [X86-32] Disable Multi-Function General Purpose
|
||||||
Timer usage (for AMD Geode machines).
|
Timer usage (for AMD Geode machines).
|
||||||
|
|
||||||
|
norandmaps Don't use address space randomization. Equivalent to
|
||||||
|
echo 0 > /proc/sys/kernel/randomize_va_space
|
||||||
|
|
||||||
noreplace-paravirt [X86-32,PV_OPS] Don't patch paravirt_ops
|
noreplace-paravirt [X86-32,PV_OPS] Don't patch paravirt_ops
|
||||||
|
|
||||||
noreplace-smp [X86-32,SMP] Don't replace SMP instructions
|
noreplace-smp [X86-32,SMP] Don't replace SMP instructions
|
||||||
|
@ -1650,13 +1592,13 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
purges which is reported from either PAL_VM_SUMMARY or
|
purges which is reported from either PAL_VM_SUMMARY or
|
||||||
SAL PALO.
|
SAL PALO.
|
||||||
|
|
||||||
|
nr_uarts= [SERIAL] maximum number of UARTs to be registered.
|
||||||
|
|
||||||
numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
|
numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
|
||||||
one of ['zone', 'node', 'default'] can be specified
|
one of ['zone', 'node', 'default'] can be specified
|
||||||
This can be set from sysctl after boot.
|
This can be set from sysctl after boot.
|
||||||
See Documentation/sysctl/vm.txt for details.
|
See Documentation/sysctl/vm.txt for details.
|
||||||
|
|
||||||
nr_uarts= [SERIAL] maximum number of UARTs to be registered.
|
|
||||||
|
|
||||||
ohci1394_dma=early [HW] enable debugging via the ohci1394 driver.
|
ohci1394_dma=early [HW] enable debugging via the ohci1394 driver.
|
||||||
See Documentation/debugging-via-ohci1394.txt for more
|
See Documentation/debugging-via-ohci1394.txt for more
|
||||||
info.
|
info.
|
||||||
|
@ -1905,6 +1847,14 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
printk.time= Show timing data prefixed to each printk message line
|
printk.time= Show timing data prefixed to each printk message line
|
||||||
Format: <bool> (1/Y/y=enable, 0/N/n=disable)
|
Format: <bool> (1/Y/y=enable, 0/N/n=disable)
|
||||||
|
|
||||||
|
processor.max_cstate= [HW,ACPI]
|
||||||
|
Limit processor to maximum C-state
|
||||||
|
max_cstate=9 overrides any DMI blacklist limit.
|
||||||
|
|
||||||
|
processor.nocst [HW,ACPI]
|
||||||
|
Ignore the _CST method to determine C-states,
|
||||||
|
instead using the legacy FADT method
|
||||||
|
|
||||||
profile= [KNL] Enable kernel profiling via /proc/profile
|
profile= [KNL] Enable kernel profiling via /proc/profile
|
||||||
Format: [schedule,]<number>
|
Format: [schedule,]<number>
|
||||||
Param: "schedule" - profile schedule points.
|
Param: "schedule" - profile schedule points.
|
||||||
|
@ -1914,14 +1864,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
Requires CONFIG_SCHEDSTATS
|
Requires CONFIG_SCHEDSTATS
|
||||||
Param: "kvm" - profile VM exits.
|
Param: "kvm" - profile VM exits.
|
||||||
|
|
||||||
processor.max_cstate= [HW,ACPI]
|
|
||||||
Limit processor to maximum C-state
|
|
||||||
max_cstate=9 overrides any DMI blacklist limit.
|
|
||||||
|
|
||||||
processor.nocst [HW,ACPI]
|
|
||||||
Ignore the _CST method to determine C-states,
|
|
||||||
instead using the legacy FADT method
|
|
||||||
|
|
||||||
prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
|
prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
|
||||||
before loading.
|
before loading.
|
||||||
See Documentation/blockdev/ramdisk.txt.
|
See Documentation/blockdev/ramdisk.txt.
|
||||||
|
@ -2075,7 +2017,13 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
allowing boot to proceed. none ignores them, expecting
|
allowing boot to proceed. none ignores them, expecting
|
||||||
user space to do the scan.
|
user space to do the scan.
|
||||||
|
|
||||||
selinux [SELINUX] Disable or enable SELinux at boot time.
|
security= [SECURITY] Choose a security module to enable at boot.
|
||||||
|
If this boot parameter is not specified, only the first
|
||||||
|
security module asking for security registration will be
|
||||||
|
loaded. An invalid security module name will be treated
|
||||||
|
as if no module has been chosen.
|
||||||
|
|
||||||
|
selinux= [SELINUX] Disable or enable SELinux at boot time.
|
||||||
Format: { "0" | "1" }
|
Format: { "0" | "1" }
|
||||||
See security/selinux/Kconfig help text.
|
See security/selinux/Kconfig help text.
|
||||||
0 -- disable.
|
0 -- disable.
|
||||||
|
@ -2499,9 +2447,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
medium is write-protected).
|
medium is write-protected).
|
||||||
Example: quirks=0419:aaf5:rl,0421:0433:rc
|
Example: quirks=0419:aaf5:rl,0421:0433:rc
|
||||||
|
|
||||||
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= [X86-32,SH,x86-64]
|
||||||
vdso=2: enable compat VDSO (default with COMPAT_VDSO)
|
vdso=2: enable compat VDSO (default with COMPAT_VDSO)
|
||||||
vdso=1: enable VDSO (default)
|
vdso=1: enable VDSO (default)
|
||||||
|
@ -2540,6 +2485,31 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
vmpoff= [KNL,S390] Perform z/VM CP command after power off.
|
vmpoff= [KNL,S390] Perform z/VM CP command after power off.
|
||||||
Format: <command>
|
Format: <command>
|
||||||
|
|
||||||
|
vt.default_blu= [VT]
|
||||||
|
Format: <blue0>,<blue1>,<blue2>,...,<blue15>
|
||||||
|
Change the default blue palette of the console.
|
||||||
|
This is a 16-member array composed of values
|
||||||
|
ranging from 0-255.
|
||||||
|
|
||||||
|
vt.default_grn= [VT]
|
||||||
|
Format: <green0>,<green1>,<green2>,...,<green15>
|
||||||
|
Change the default green palette of the console.
|
||||||
|
This is a 16-member array composed of values
|
||||||
|
ranging from 0-255.
|
||||||
|
|
||||||
|
vt.default_red= [VT]
|
||||||
|
Format: <red0>,<red1>,<red2>,...,<red15>
|
||||||
|
Change the default red palette of the console.
|
||||||
|
This is a 16-member array composed of values
|
||||||
|
ranging from 0-255.
|
||||||
|
|
||||||
|
vt.default_utf8=
|
||||||
|
[VT]
|
||||||
|
Format=<0|1>
|
||||||
|
Set system-wide default UTF-8 mode for all tty's.
|
||||||
|
Default is 1, i.e. UTF-8 mode is enabled for all
|
||||||
|
newly opened terminals.
|
||||||
|
|
||||||
waveartist= [HW,OSS]
|
waveartist= [HW,OSS]
|
||||||
Format: <io>,<irq>,<dma>,<dma2>
|
Format: <io>,<irq>,<dma>,<dma2>
|
||||||
|
|
||||||
|
@ -2552,6 +2522,10 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
wdt= [WDT] Watchdog
|
wdt= [WDT] Watchdog
|
||||||
See Documentation/watchdog/wdt.txt.
|
See Documentation/watchdog/wdt.txt.
|
||||||
|
|
||||||
|
x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of
|
||||||
|
default x2apic cluster mode on platforms
|
||||||
|
supporting x2apic.
|
||||||
|
|
||||||
xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks.
|
xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks.
|
||||||
xd_geo= See header of drivers/block/xd.c.
|
xd_geo= See header of drivers/block/xd.c.
|
||||||
|
|
||||||
|
@ -2559,9 +2533,6 @@ and is between 256 and 4096 characters. It is defined in the file
|
||||||
Format:
|
Format:
|
||||||
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
|
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
|
||||||
|
|
||||||
norandmaps Don't use address space randomization. Equivalent to
|
|
||||||
echo 0 > /proc/sys/kernel/randomize_va_space
|
|
||||||
|
|
||||||
______________________________________________________________________
|
______________________________________________________________________
|
||||||
|
|
||||||
TODO:
|
TODO:
|
||||||
|
|
Loading…
Reference in a new issue