1 files changed, 148 insertions, 36 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1150444a21ab..343e0f0f84b6 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -101,6 +101,7 @@ parameter is applicable:
         X86-64  X86-64 architecture is enabled.
                         More X86-64 boot options can be found in
                         Documentation/x86_64/boot-options.txt .
+        X86     Either 32bit or 64bit x86 (same as X86-32+X86-64)
 
 In addition, the following text indicates that the option:
 
@@ -217,20 +218,47 @@ and is between 256 and 4096 characters. It is defined in the file
         acpi.debug_level=       [HW,ACPI]
                         Format: <int>
                         Each bit of the <int> indicates an ACPI debug level,
-                        1: enable, 0: disable. It is useful for boot time
-                        debugging. After system has booted up, it can be set
-                        via /sys/module/acpi/parameters/debug_level.
-                        CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
-                        Available bits (add the numbers together) to enable different
-                        debug output levels of the ACPI subsystem:
-                        0x01 error 0x02 warn 0x04 init 0x08 debug object
-                        0x10 info 0x20 init names 0x40 parse 0x80 load
-                        0x100 dispatch 0x200 execute 0x400 names 0x800 operation region
-                        0x1000 bfield 0x2000 tables 0x4000 values 0x8000 objects
-                        0x10000 resources 0x20000 user requests 0x40000 package.
-                        The number can be in decimal or prefixed with 0x in hex.
-                        Warning: Many of these options can produce a lot of
-                        output and make your system unusable. Be very careful.
+                        which corresponds to the level in an ACPI_DEBUG_PRINT
+                        statement.  After system has booted up, this mask
+                        can be set via /sys/module/acpi/parameters/debug_level.
+
+                        CONFIG_ACPI_DEBUG must be enabled for this to produce
+                        any output.  The number can be in decimal or prefixed
+                        with 0x in hex.  Some of these options produce so much
+                        output that the system is unusable.
+
+                        The following global components are defined by the
+                        ACPI CA:
+                               0x01 error
+                               0x02 warn
+                               0x04 init
+                               0x08 debug object
+                               0x10 info
+                               0x20 init names
+                               0x40 parse
+                               0x80 load
+                              0x100 dispatch
+                              0x200 execute
+                              0x400 names
+                              0x800 operation region
+                             0x1000 bfield
+                             0x2000 tables
+                             0x4000 values
+                             0x8000 objects
+                            0x10000 resources
+                            0x20000 user requests
+                            0x40000 package
+                        The number can be in decimal or prefixed with 0x in hex.
+                        Warning: Many of these options can produce a lot of
+                        output and make your system unusable. Be very careful.
+
+        acpi.power_nocheck=     [HW,ACPI]
+                        Format: 1/0 enable/disable the check of power state.
+                        On some bogus BIOS the _PSC object/_STA object of
+                        power resource can't return the correct device power
+                        state. In such case it is unneccessary to check its
+                        power state again in power transition.
+                        1 : disable the power state check
 
         acpi_pm_good    [X86-32,X86-64]
                         Override the pmtimer bug detection: force the kernel
@@ -284,6 +312,11 @@ and is between 256 and 4096 characters. It is defined in the file
                         isolate - enable device isolation (each device, as far
                                   as possible, will get its own protection
                                   domain)
+                        fullflush - enable flushing of IO/TLB entries when
+                                    they are unmapped. Otherwise they are
+                                    flushed before they will be reused, which
+                                    is a lot of faster
+
         amd_iommu_size= [HW,X86-64]
                         Define the size of the aperture for the AMD IOMMU
                         driver. Possible values are:
@@ -463,12 +496,6 @@ and is between 256 and 4096 characters. It is defined in the file
                         Range: 0 - 8192
                         Default: 64
 
-        disable_8254_timer
-        enable_8254_timer
-                        [IA32/X86_64] Disable/Enable interrupt 0 timer routing
-                        over the 8254 in addition to over the IO-APIC. The
-                        kernel tries to set a sensible default.
-
         hpet=           [X86-32,HPET] option to control HPET usage
                         Format: { enable (default) | disable | force }
                         disable: disable HPET and use PIT instead
@@ -659,11 +686,12 @@ and is between 256 and 4096 characters. It is defined in the file
         earlyprintk=    [X86-32,X86-64,SH,BLACKFIN]
                         earlyprintk=vga
                         earlyprintk=serial[,ttySn[,baudrate]]
+                        earlyprintk=dbgp
 
                         Append ",keep" to not disable it when the real console
                         takes over.
 
-                        Only vga or serial at a time, not both.
+                        Only vga or serial or usb debug port at a time.
 
                         Currently only ttyS0 and ttyS1 are supported.
 
@@ -690,7 +718,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         See Documentation/block/as-iosched.txt and
                         Documentation/block/deadline-iosched.txt for details.
 
-        elfcorehdr=     [X86-32, X86_64]
+        elfcorehdr=     [IA64,PPC,SH,X86-32,X86_64]
                         Specifies physical address of start of kernel core
                         image elf header. Generally kexec loader will
                         pass this option to capture kernel.
@@ -796,6 +824,9 @@ and is between 256 and 4096 characters. It is defined in the file
                         Defaults to the default architecture's huge page size
                         if not specified.
 
+        hlt             [BUGS=ARM,SH]
+
+        i8042.debug     [HW] Toggle i8042 debug mode
         i8042.direct    [HW] Put keyboard port into non-translated mode
         i8042.dumbkbd   [HW] Pretend that controller can only read data from
                              keyboard and cannot control its state
@@ -1020,6 +1051,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         (only serial suported for now)
                         Format: <serial_device>[,baud]
 
+        kmac=           [MIPS] korina ethernet MAC address.
+                        Configure the RouterBoard 532 series on-chip
+                        Ethernet adapter MAC address.
+
         l2cr=           [PPC]
 
         l3cr=           [PPC]
@@ -1206,6 +1241,10 @@ and is between 256 and 4096 characters. It is defined in the file
         mem=nopentium   [BUGS=X86-32] Disable usage of 4MB pages for kernel
                         memory.
 
+        memchunk=nn[KMG]
+                        [KNL,SH] Allow user to override the default size for
+                        per-device physically contiguous DMA buffers.
+
         memmap=exactmap [KNL,X86-32,X86_64] Enable setting of an exact
                         E820 memory map, as specified by the user.
                         Such memmap=exactmap lines can be constructed based on
@@ -1228,6 +1267,29 @@ and is between 256 and 4096 characters. It is defined in the file
                                  or
                                  memmap=0x10000$0x18690000
 
+        memory_corruption_check=0/1 [X86]
+                        Some BIOSes seem to corrupt the first 64k of
+                        memory when doing things like suspend/resume.
+                        Setting this option will scan the memory
+                        looking for corruption.  Enabling this will
+                        both detect corruption and prevent the kernel
+                        from using the memory being corrupted.
+                        However, its intended as a diagnostic tool; if
+                        repeatable BIOS-originated corruption always
+                        affects the same memory, you can use memmap=
+                        to prevent the kernel from using that memory.
+
+        memory_corruption_check_size=size [X86]
+                        By default it checks for corruption in the low
+                        64k, making this memory unavailable for normal
+                        use.  Use this parameter to scan for
+                        corruption in more or less memory.
+
+        memory_corruption_check_period=seconds [X86]
+                        By default it checks for corruption every 60
+                        seconds.  Use this parameter to check at some
+                        other rate.  0 disables periodic checking.
+
         memtest=        [KNL,X86] Enable memtest
                         Format: <integer>
                         range: 0,4 : pattern number
@@ -1365,6 +1427,8 @@ and is between 256 and 4096 characters. It is defined in the file
 
         nodisconnect    [HW,SCSI,M68K] Disables SCSI disconnects.
 
+        nodsp           [SH] Disable hardware DSP at boot time.
+
         noefi           [X86-32,X86-64] Disable EFI runtime services support.
 
         noexec          [IA-64]
@@ -1381,13 +1445,15 @@ and is between 256 and 4096 characters. It is defined in the file
                         noexec32=off: disable non-executable mappings
                                 read implies executable mappings
 
+        nofpu           [SH] Disable hardware FPU at boot time.
+
         nofxsr          [BUGS=X86-32] Disables x86 floating point extended
                         register save and restore. The kernel will only save
                         legacy floating-point registers on task switch.
 
         noclflush       [BUGS=X86] Don't use the CLFLUSH instruction
 
-        nohlt           [BUGS=ARM]
+        nohlt           [BUGS=ARM,SH]
 
         no-hlt          [BUGS=X86-32] Tells the kernel that the hlt
                         instruction doesn't work correctly and not to
@@ -1425,6 +1491,12 @@ 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.
 
+        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
                         lowmem mapping on PPC40x.
 
@@ -1544,7 +1616,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         See also Documentation/paride.txt.
 
         pci=option[,option...]  [PCI] various PCI subsystem options:
-                off             [X86-32] don't probe for the PCI bus
+                off             [X86] don't probe for the PCI bus
                 bios            [X86-32] force use of PCI BIOS, don't access
                                 the hardware directly. Use this if your machine
                                 has a non-standard PCI host bridge.
@@ -1552,9 +1624,9 @@ and is between 256 and 4096 characters. It is defined in the file
                                 hardware access methods are allowed. Use this
                                 if you experience crashes upon bootup and you
                                 suspect they are caused by the BIOS.
-                conf1           [X86-32] Force use of PCI Configuration
+                conf1           [X86] Force use of PCI Configuration
                                 Mechanism 1.
-                conf2           [X86-32] Force use of PCI Configuration
+                conf2           [X86] Force use of PCI Configuration
                                 Mechanism 2.
                 noaer           [PCIE] If the PCIEAER kernel config parameter is
                                 enabled, this kernel boot option can be used to
@@ -1574,37 +1646,37 @@ and is between 256 and 4096 characters. It is defined in the file
                                 this option if the kernel is unable to allocate
                                 IRQs or discover secondary PCI buses on your
                                 motherboard.
-                rom             [X86-32] Assign address space to expansion ROMs.
+                rom             [X86] Assign address space to expansion ROMs.
                                 Use with caution as certain devices share
                                 address decoders between ROMs and other
                                 resources.
-                norom           [X86-32,X86_64] Do not assign address space to
+                norom           [X86] Do not assign address space to
                                 expansion ROMs that do not already have
                                 BIOS assigned address ranges.
-                irqmask=0xMMMM  [X86-32] Set a bit mask of IRQs allowed to be
+                irqmask=0xMMMM  [X86] Set a bit mask of IRQs allowed to be
                                 assigned automatically to PCI devices. You can
                                 make the kernel exclude IRQs of your ISA cards
                                 this way.
-                pirqaddr=0xAAAAA        [X86-32] Specify the physical address
+                pirqaddr=0xAAAAA        [X86] Specify the physical address
                                 of the PIRQ table (normally generated
                                 by the BIOS) if it is outside the
                                 F0000h-100000h range.
-                lastbus=N       [X86-32] Scan all buses thru bus #N. Can be
+                lastbus=N       [X86] Scan all buses thru bus #N. Can be
                                 useful if the kernel is unable to find your
                                 secondary buses and you want to tell it
                                 explicitly which ones they are.
-                assign-busses   [X86-32] Always assign all PCI bus
+                assign-busses   [X86] Always assign all PCI bus
                                 numbers ourselves, overriding
                                 whatever the firmware may have done.
-                usepirqmask     [X86-32] Honor the possible IRQ mask stored
+                usepirqmask     [X86] Honor the possible IRQ mask stored
                                 in the BIOS $PIR table. This is needed on
                                 some systems with broken BIOSes, notably
                                 some HP Pavilion N5400 and Omnibook XE3
                                 notebooks. This will have no effect if ACPI
                                 IRQ routing is enabled.
-                noacpi          [X86-32] Do not use ACPI for IRQ routing
+                noacpi          [X86] Do not use ACPI for IRQ routing
                                 or for PCI scanning.
-                use_crs         [X86-32] Use _CRS for PCI resource
+                use_crs         [X86] Use _CRS for PCI resource
                                 allocation.
                 routeirq        Do IRQ routing for all PCI devices.
                                 This is normally done in pci_enable_device(),
@@ -1633,6 +1705,12 @@ and is between 256 and 4096 characters. It is defined in the file
                                 reserved for the CardBus bridge's memory
                                 window. The default value is 64 megabytes.
 
+        pcie_aspm=      [PCIE] Forcibly enable or disable PCIe Active State Power
+                        Management.
+                off     Disable ASPM.
+                force   Enable ASPM even on devices that claim not to support it.
+                        WARNING: Forcing ASPM on may cause system lockups.
+
         pcmv=           [HW,PCMCIA] BadgePAD 4
 
         pd.             [PARIDE]
@@ -1660,6 +1738,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         Override pmtimer IOPort with a hex value.
                         e.g. pmtmr=0x508
 
+        pnp.debug       [PNP]
+                        Enable PNP debug messages.  This depends on the
+                        CONFIG_PNP_DEBUG_MESSAGES option.
+
         pnpacpi=        [ACPI]
                         { off }
 
@@ -1680,6 +1762,11 @@ and is between 256 and 4096 characters. It is defined in the file
                         autoconfiguration.
                         Ranges are in pairs (memory base and size).
 
+        dynamic_printk
+                        Enables pr_debug()/dev_dbg() calls if
+                        CONFIG_DYNAMIC_PRINTK_DEBUG has been enabled. These can also
+                        be switched on/off via <debugfs>/dynamic_printk/modules
+
         print-fatal-signals=
                         [KNL] debug: print fatal signals
                         print-fatal-signals=1: print segfault info to
@@ -1882,6 +1969,12 @@ and is between 256 and 4096 characters. It is defined in the file
         shapers=        [NET]
                         Maximal number of shapers.
 
+        show_msr=       [x86] show boot-time MSR settings
+                        Format: { <integer> }
+                        Show boot-time (BIOS-initialized) MSR settings.
+                        The parameter means the number of CPUs to show,
+                        for example 1 means boot CPU only.
+
         sim710=         [SCSI,HW]
                         See header of drivers/scsi/sim710.c.
 
@@ -2146,7 +2239,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
         thermal.crt=    [HW,ACPI]
                         -1: disable all critical trip points in all thermal zones
-                        <degrees C>: lower all critical trip points
+                        <degrees C>: override all critical trip points
 
         thermal.nocrt=  [HW,ACPI]
                         Set to disable actions on ACPI thermal zone
@@ -2208,6 +2301,25 @@ and is between 256 and 4096 characters. It is defined in the file
                         autosuspended.  Devices for which the delay is set
                         to a negative value won't be autosuspended at all.
 
+        usbcore.usbfs_snoop=
+                        [USB] Set to log all usbfs traffic (default 0 = off).
+
+        usbcore.blinkenlights=
+                        [USB] Set to cycle leds on hubs (default 0 = off).
+
+        usbcore.old_scheme_first=
+                        [USB] Start with the old device initialization
+                        scheme (default 0 = off).
+
+        usbcore.use_both_schemes=
+                        [USB] Try the other device initialization scheme
+                        if the first one fails (default 1 = enabled).
+
+        usbcore.initial_descriptor_timeout=
+                        [USB] Specifies timeout for the initial 64-byte
+                        USB_REQ_GET_DESCRIPTOR request in milliseconds
+                        (default 5000 = 5.0 seconds).
+
         usbhid.mousepoll=
                         [USBHID] The interval which mice are to be polled at.