delay accounting: maintainer update

[mirror_ubuntu-artful-kernel.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4b0f1ae31a4c152f4547050e2b3d8cc6b375bb31..e07c432c731ff9a516fe8b23228af0fe6fa1d29a 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -398,9 +398,6 @@ and is between 256 and 4096 characters. It is defined in the file
        cio_ignore=     [S390]
                        See Documentation/s390/CommonIO for details.
 
-       cio_msg=        [S390]
-                       See Documentation/s390/CommonIO for details.
-
        clock=          [BUGS=X86-32, HW] gettimeofday clocksource override.
                        [Deprecated]
                        Forces specified clocksource (if available) to be used
@@ -496,6 +493,11 @@ and is between 256 and 4096 characters. It is defined in the file
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.
 
+                If the device connected to the port is not a TTY but a braille
+                device, prepend "brl," before the device type, for instance
+                       console=brl,ttyS0
+               For now, only VisioBraille is supported.
+
        earlycon=       [KNL] Output early console device and options.
                uart[8250],io,<addr>[,options]
                uart[8250],mmio,<addr>[,options]
@@ -556,6 +558,8 @@ and is between 256 and 4096 characters. It is defined in the file
                        1 will print _a lot_ more information - normally
                        only useful to kernel developers.
 
+       debug_objects   [KNL] Enable object debugging
+
        decnet.addr=    [HW,NET]
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.
@@ -627,8 +631,7 @@ and is between 256 and 4096 characters. It is defined in the file
        eata=           [HW,SCSI]
 
        edd=            [EDD]
-                       Format: {"of[f]" | "sk[ipmbr]"}
-                       See comment in arch/i386/boot/edd.S
+                       Format: {"off" | "on" | "skip[mbr]"}
 
        eisa_irq_edge=  [PARISC,HW]
                        See header of drivers/parisc/eisa.c.
@@ -683,6 +686,12 @@ and is between 256 and 4096 characters. It is defined in the file
        floppy=         [HW]
                        See Documentation/floppy.txt.
 
+       force_pal_cache_flush
+                       [IA-64] Avoid check_sal_cache_flush which may hang on
+                       buggy SAL_CACHE_FLUSH implementations. Using this
+                       parameter will force ia64_sal_cache_flush to call
+                       ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.
+
        gamecon.map[2|3]=
                        [HW,JOY] Multisystem joystick and NES/SNES/PSX pad
                        support via parallel port (up to 5 devices per port)
@@ -772,10 +781,6 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: ide=nodma or ide=doubler
                        See Documentation/ide/ide.txt.
 
-       ide?=           [HW] (E)IDE subsystem
-                       Format: ide?=ata66 or chipset specific parameters.
-                       See Documentation/ide/ide.txt.
-
        idebus=         [HW] (E)IDE subsystem - VLB/PCI bus speed
                        See Documentation/ide/ide.txt.
 
@@ -847,6 +852,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        than 32 bit addressing. The default is to look
                        for translation below 32 bit and if not available
                        then look in the higher range.
+               strict [Default Off]
+                       With this option on every unmap_single operation will
+                       result in a hardware IOTLB flush operation as opposed
+                       to batching them for performance.
 
        io_delay=       [X86-32,X86-64] I/O delay method
                0x80
@@ -954,6 +963,8 @@ and is between 256 and 4096 characters. It is defined in the file
 
        l2cr=           [PPC]
 
+       l3cr=           [PPC]
+
        lapic           [X86-32,APIC] Enable the local APIC even if BIOS
                        disabled it.
 
@@ -1086,9 +1097,6 @@ and is between 256 and 4096 characters. It is defined in the file
        mac5380=        [HW,SCSI] Format:
                        <can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
 
-       mac53c9x=       [HW,SCSI] Format:
-                       <num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
-
        machvec=        [IA64] Force the use of a particular machine-vector
                        (machvec) in a generic kernel.
                        Example: machvec=hpzx1_swiotlb
@@ -1280,8 +1288,16 @@ and is between 256 and 4096 characters. It is defined in the file
        noexec          [IA-64]
 
        noexec          [X86-32,X86-64]
+                       On X86-32 available only on PAE configured kernels.
                        noexec=on: enable non-executable mappings (default)
-                       noexec=off: disable nn-executable mappings
+                       noexec=off: disable non-executable mappings
+
+       noexec32        [X86-64]
+                       This affects only 32-bit executables.
+                       noexec32=on: enable non-executable mappings (default)
+                               read doesn't imply executable mappings
+                       noexec32=off: disable non-executable mappings
+                               read implies executable mappings
 
        nofxsr          [BUGS=X86-32] Disables x86 floating point extended
                        register save and restore. The kernel will only save
@@ -1379,6 +1395,13 @@ and is between 256 and 4096 characters. It is defined in the file
 
        nr_uarts=       [SERIAL] maximum number of UARTs to be registered.
 
+       olpc_ec_timeout= [OLPC] ms delay when issuing EC commands
+                       Rather than timing out after 20 ms if an EC
+                       command is not properly ACKed, override the length
+                       of the timeout.  We have interrupts disabled while
+                       waiting for the ACK, so if this is set too high
+                       interrupts *may* be lost!
+
        opl3=           [HW,OSS]
                        Format: <io>
 
@@ -1461,10 +1484,6 @@ and is between 256 and 4096 characters. It is defined in the file
                nomsi           [MSI] If the PCI_MSI kernel config parameter is
                                enabled, this kernel boot option can be used to
                                disable the use of MSI interrupts system-wide.
-               nosort          [X86-32] Don't sort PCI devices according to
-                               order given by the PCI BIOS. This sorting is
-                               done to get a device order compatible with
-                               older kernels.
                biosirq         [X86-32] Use PCI BIOS calls to get the interrupt
                                routing table. These calls are known to be buggy
                                on several machines and they hang the machine
@@ -1506,6 +1525,8 @@ and is between 256 and 4096 characters. It is defined in the file
                                This is normally done in pci_enable_device(),
                                so this option is a temporary workaround
                                for broken drivers that don't call it.
+               skip_isa_align  [X86] do not align io start addr, so can
+                               handle more pci cards
                firmware        [ARM] Do not re-enumerate the bus but instead
                                just use the configuration from the
                                bootloader. This is currently used on