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@@ -198,59 +198,42 @@ and is between 256 and 4096 characters. It is defined in the file
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that require a timer override, but don't have
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HPET
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- acpi.debug_layer= [HW,ACPI]
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+ acpi_backlight= [HW,ACPI]
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+ acpi_backlight=vendor
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+ acpi_backlight=video
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+ If set to vendor, prefer vendor specific driver
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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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+
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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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+
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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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Format: <int>
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- Each bit of the <int> indicates an ACPI debug layer,
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- 1: enable, 0: disable. It is useful for boot time
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- debugging. After system has booted up, it can be set
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- via /sys/module/acpi/parameters/debug_layer.
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- CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
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- Available bits (add the numbers together) to enable debug output
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- for specific parts of the ACPI subsystem:
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- 0x01 utilities 0x02 hardware 0x04 events 0x08 tables
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- 0x10 namespace 0x20 parser 0x40 dispatcher
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- 0x80 executer 0x100 resources 0x200 acpica debugger
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- 0x400 os services 0x800 acpica disassembler.
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- The number can be in decimal or prefixed with 0x in hex.
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- Warning: Many of these options can produce a lot of
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- output and make your system unusable. Be very careful.
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-
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- acpi.debug_level= [HW,ACPI]
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- Format: <int>
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- Each bit of the <int> indicates an ACPI debug level,
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- which corresponds to the level in an ACPI_DEBUG_PRINT
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- statement. After system has booted up, this mask
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- can be set via /sys/module/acpi/parameters/debug_level.
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-
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- CONFIG_ACPI_DEBUG must be enabled for this to produce
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- any output. The number can be in decimal or prefixed
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- with 0x in hex. Some of these options produce so much
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- output that the system is unusable.
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-
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- The following global components are defined by the
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- ACPI CA:
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- 0x01 error
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- 0x02 warn
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- 0x04 init
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- 0x08 debug object
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- 0x10 info
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- 0x20 init names
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- 0x40 parse
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- 0x80 load
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- 0x100 dispatch
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- 0x200 execute
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- 0x400 names
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- 0x800 operation region
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- 0x1000 bfield
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- 0x2000 tables
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- 0x4000 values
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- 0x8000 objects
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- 0x10000 resources
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- 0x20000 user requests
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- 0x40000 package
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- The number can be in decimal or prefixed with 0x in hex.
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- Warning: Many of these options can produce a lot of
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- output and make your system unusable. Be very careful.
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+ CONFIG_ACPI_DEBUG must be enabled to produce any ACPI
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+ debug output. Bits in debug_layer correspond to a
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+ _COMPONENT in an ACPI source file, e.g.,
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+ #define _COMPONENT ACPI_PCI_COMPONENT
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+ Bits in debug_level correspond to a level in
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+ ACPI_DEBUG_PRINT statements, e.g.,
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+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, ...
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+ See Documentation/acpi/debug.txt for more information
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+ about debug layers and levels.
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+
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+ Enable AML "Debug" output, i.e., stores to the Debug
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+ object while interpreting AML:
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+ acpi.debug_layer=0xffffffff acpi.debug_level=0x2
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+ Enable PCI/PCI interrupt routing info messages:
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+ acpi.debug_layer=0x400000 acpi.debug_level=0x4
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+ Enable all messages related to ACPI hardware:
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+ acpi.debug_layer=0x2 acpi.debug_level=0xffffffff
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+
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+ Some values produce so much output that the system is
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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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acpi.power_nocheck= [HW,ACPI]
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Format: 1/0 enable/disable the check of power state.
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@@ -311,7 +294,9 @@ and is between 256 and 4096 characters. It is defined in the file
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Possible values are:
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isolate - enable device isolation (each device, as far
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as possible, will get its own protection
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- domain)
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+ domain) [default]
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+ share - put every device behind one IOMMU into the
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+ same protection domain
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fullflush - enable flushing of IO/TLB entries when
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they are unmapped. Otherwise they are
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flushed before they will be reused, which
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@@ -646,7 +631,7 @@ and is between 256 and 4096 characters. It is defined in the file
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digiepca= [HW,SERIAL]
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See drivers/char/README.epca and
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- Documentation/digiepca.txt.
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+ Documentation/serial/digiepca.txt.
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disable_mtrr_cleanup [X86]
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enable_mtrr_cleanup [X86]
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@@ -757,7 +742,7 @@ and is between 256 and 4096 characters. It is defined in the file
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See header of drivers/scsi/fdomain.c.
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floppy= [HW]
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- See Documentation/floppy.txt.
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+ See Documentation/blockdev/floppy.txt.
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force_pal_cache_flush
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[IA-64] Avoid check_sal_cache_flush which may hang on
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@@ -1118,7 +1103,7 @@ and is between 256 and 4096 characters. It is defined in the file
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the same attribute, the last one is used.
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load_ramdisk= [RAM] List of ramdisks to load from floppy
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- See Documentation/ramdisk.txt.
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+ See Documentation/blockdev/ramdisk.txt.
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lockd.nlm_grace_period=P [NFS] Assign grace period.
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Format: <integer>
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@@ -1210,8 +1195,8 @@ and is between 256 and 4096 characters. It is defined in the file
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it is equivalent to "nosmp", which also disables
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the IO APIC.
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- max_addr=[KMG] [KNL,BOOT,ia64] All physical memory greater than or
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- equal to this physical address is ignored.
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+ max_addr=nn[KMG] [KNL,BOOT,ia64] All physical memory greater than
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+ or equal to this physical address is ignored.
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max_luns= [SCSI] Maximum number of LUNs to probe.
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Should be between 1 and 2^32-1.
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@@ -1311,6 +1296,9 @@ and is between 256 and 4096 characters. It is defined in the file
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mga= [HW,DRM]
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+ min_addr=nn[KMG] [KNL,BOOT,ia64] All physical memory below this
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+ physical address is ignored.
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+
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mminit_loglevel=
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[KNL] When CONFIG_DEBUG_MEMORY_INIT is set, this
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parameter allows control of the logging verbosity for
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@@ -1613,7 +1601,7 @@ and is between 256 and 4096 characters. It is defined in the file
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pcd. [PARIDE]
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See header of drivers/block/paride/pcd.c.
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- See also Documentation/paride.txt.
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+ See also Documentation/blockdev/paride.txt.
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pci=option[,option...] [PCI] various PCI subsystem options:
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off [X86] don't probe for the PCI bus
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@@ -1714,7 +1702,7 @@ and is between 256 and 4096 characters. It is defined in the file
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pcmv= [HW,PCMCIA] BadgePAD 4
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pd. [PARIDE]
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- See Documentation/paride.txt.
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+ See Documentation/blockdev/paride.txt.
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pdcchassis= [PARISC,HW] Disable/Enable PDC Chassis Status codes at
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boot time.
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@@ -1722,10 +1710,10 @@ and is between 256 and 4096 characters. It is defined in the file
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See arch/parisc/kernel/pdc_chassis.c
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pf. [PARIDE]
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- See Documentation/paride.txt.
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+ See Documentation/blockdev/paride.txt.
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pg. [PARIDE]
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- See Documentation/paride.txt.
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+ See Documentation/blockdev/paride.txt.
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pirq= [SMP,APIC] Manual mp-table setup
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See Documentation/x86/i386/IO-APIC.txt.
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@@ -1795,7 +1783,7 @@ and is between 256 and 4096 characters. It is defined in the file
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prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
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before loading.
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- See Documentation/ramdisk.txt.
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+ See Documentation/blockdev/ramdisk.txt.
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psmouse.proto= [HW,MOUSE] Highest PS2 mouse protocol extension to
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probe for; one of (bare|imps|exps|lifebook|any).
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@@ -1815,7 +1803,7 @@ and is between 256 and 4096 characters. It is defined in the file
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<io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq>
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pt. [PARIDE]
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- See Documentation/paride.txt.
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+ See Documentation/blockdev/paride.txt.
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pty.legacy_count=
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[KNL] Number of legacy pty's. Overwrites compiled-in
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@@ -1829,10 +1817,10 @@ and is between 256 and 4096 characters. It is defined in the file
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See Documentation/md.txt.
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ramdisk_blocksize= [RAM]
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- See Documentation/ramdisk.txt.
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+ See Documentation/blockdev/ramdisk.txt.
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ramdisk_size= [RAM] Sizes of RAM disks in kilobytes
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- See Documentation/ramdisk.txt.
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+ See Documentation/blockdev/ramdisk.txt.
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rcupdate.blimit= [KNL,BOOT]
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Set maximum number of finished RCU callbacks to process
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@@ -2164,7 +2152,7 @@ and is between 256 and 4096 characters. It is defined in the file
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See Documentation/sonypi.txt
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specialix= [HW,SERIAL] Specialix multi-serial port adapter
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- See Documentation/specialix.txt.
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+ See Documentation/serial/specialix.txt.
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spia_io_base= [HW,MTD]
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spia_fio_base=
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