diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 211 |
1 files changed, 40 insertions, 171 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 82d6aeb5228f..44f6b19c50bb 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -73,7 +73,6 @@ parameter is applicable: MTD MTD (Memory Technology Device) support is enabled. NET Appropriate network support is enabled. NUMA NUMA support is enabled. - GENERIC_TIME The generic timeofday code is enabled. NFS Appropriate NFS support is enabled. OSS OSS sound support is enabled. PV_OPS A paravirtualized kernel is enabled. @@ -93,6 +92,7 @@ parameter is applicable: Documentation/scsi/. SECURITY Different security models are enabled. SELINUX SELinux support is enabled. + APPARMOR AppArmor support is enabled. SERIAL Serial support is enabled. SH SuperH architecture is enabled. SMP The kernel is an SMP kernel. @@ -115,6 +115,7 @@ parameter is applicable: More X86-64 boot options can be found in Documentation/x86/x86_64/boot-options.txt . X86 Either 32bit or 64bit x86 (same as X86-32+X86-64) + XEN Xen support is enabled In addition, the following text indicates that the option: @@ -254,8 +255,8 @@ and is between 256 and 4096 characters. It is defined in the file control method, with respect to putting devices into low power states, to be enforced (the ACPI 2.0 ordering of _PTS is used by default). - s4_nonvs prevents the kernel from saving/restoring the - ACPI NVS memory during hibernation. + nonvs prevents the kernel from saving/restoring the + ACPI NVS memory during suspend/hibernation and resume. sci_force_enable causes the kernel to set SCI_EN directly on resume from S1/S3 (which is against the ACPI spec, but some broken systems don't work without it). @@ -280,19 +281,12 @@ and is between 256 and 4096 characters. It is defined in the file no: ACPI OperationRegions are not marked as reserved, no further checks are performed. - ad1848= [HW,OSS] - Format: <io>,<irq>,<dma>,<dma2>,<type> - add_efi_memmap [EFI; X86] Include EFI memory map in kernel's map of available physical RAM. advansys= [HW,SCSI] See header of drivers/scsi/advansys.c. - aedsp16= [HW,OSS] Audio Excel DSP 16 - Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq> - See also header of sound/oss/aedsp16.c. - agp= [AGP] { off | try_unsupported } off: disable AGP support @@ -311,6 +305,9 @@ and is between 256 and 4096 characters. It is defined in the file aic79xx= [HW,SCSI] See Documentation/scsi/aic79xx.txt. + ALSA [HW,ALSA] + See Documentation/sound/alsa/alsa-parameters.txt + alignment= [KNL,ARM] Allow the default userspace alignment fault handler behaviour to be specified. Bit 0 enables warnings, @@ -468,7 +465,7 @@ and is between 256 and 4096 characters. It is defined in the file clocksource is not available, it defaults to PIT. Format: { pit | tsc | cyclone | pmtmr } - clocksource= [GENERIC_TIME] Override the default clocksource + clocksource= Override the default clocksource Format: <string> Override the default clocksource and use the clocksource with the name specified. @@ -655,8 +652,6 @@ and is between 256 and 4096 characters. It is defined in the file Disable PIN 1 of APIC timer Can be useful to work around chipset bugs. - dmasound= [HW,OSS] Sound subsystem buffers - dma_debug=off If the kernel is compiled with DMA_API_DEBUG support, this option disables the debugging code at boot. @@ -1143,9 +1138,12 @@ and is between 256 and 4096 characters. It is defined in the file kgdboc= [KGDB,HW] kgdb over consoles. Requires a tty driver that supports console polling, or a supported polling keyboard driver (non-usb). - Serial only format: <serial_device>[,baud] - keyboard only format: kbd - keyboard and serial format: kbd,<serial_device>[,baud] + Serial only format: <serial_device>[,baud] + keyboard only format: kbd + keyboard and serial format: kbd,<serial_device>[,baud] + Optional Kernel mode setting: + kms, kbd format: kms,kbd + kms, kbd and serial format: kms,kbd,<ser_dev>[,baud] kgdbwait [KGDB] Stop kernel execution and enter the kernel debugger at the earliest opportunity. @@ -1265,7 +1263,7 @@ and is between 256 and 4096 characters. It is defined in the file If there are multiple matching configurations changing the same attribute, the last one is used. - lmb=debug [KNL] Enable lmb debug messages. + memblock=debug [KNL] Enable memblock debug messages. load_ramdisk= [RAM] List of ramdisks to load from floppy See Documentation/blockdev/ramdisk.txt. @@ -1523,9 +1521,6 @@ and is between 256 and 4096 characters. It is defined in the file that the amount of memory usable for all allocations is not too small. - mpu401= [HW,OSS] - Format: <io>,<irq> - MTD_Partition= [MTD] Format: <name>,<region-number>,<size>,<offset> @@ -1597,8 +1592,7 @@ and is between 256 and 4096 characters. It is defined in the file [NETFILTER] Enable connection tracking flow accounting 0 to disable accounting 1 to enable accounting - Default value depends on CONFIG_NF_CT_ACCT that is - going to be removed in 2.6.29. + Default value is 0. nfsaddrs= [NFS] See Documentation/filesystems/nfs/nfsroot.txt. @@ -1812,6 +1806,8 @@ and is between 256 and 4096 characters. It is defined in the file nousb [USB] Disable the USB subsystem + nowatchdog [KNL] Disable the lockup detector. + nowb [ARM] nox2apic [X86-64,APIC] Do not enable x2APIC mode. @@ -1849,9 +1845,6 @@ and is between 256 and 4096 characters. It is defined in the file For example, to override I2C bus2: omap_mux=i2c2_scl.i2c2_scl=0x100,i2c2_sda.i2c2_sda=0x100 - opl3= [HW,OSS] - Format: <io> - oprofile.timer= [HW] Use timer interrupt instead of performance counters @@ -1863,6 +1856,9 @@ and is between 256 and 4096 characters. It is defined in the file perfmon on Intel CPUs instead of the CPU specific event set. + OSS [HW,OSS] + See Documentation/sound/oss/oss-parameters.txt + osst= [HW,SCSI] SCSI Tape Driver Format: <buffer_size>,<write_threshold> See also Documentation/scsi/st.txt. @@ -1899,9 +1895,6 @@ and is between 256 and 4096 characters. It is defined in the file Currently this function knows 686a and 8231 chips. Format: [spp|ps2|epp|ecp|ecpepp] - pas2= [HW,OSS] Format: - <io>,<irq>,<dma>,<dma16>,<sb_io>,<sb_irq>,<sb_dma>,<sb_dma16> - pas16= [HW,SCSI] See header of drivers/scsi/pas16.c. @@ -1970,6 +1963,8 @@ and is between 256 and 4096 characters. It is defined in the file norom [X86] Do not assign address space to expansion ROMs that do not already have BIOS assigned address ranges. + nobar [X86] Do not assign address space to the + BARs that weren't assigned by the BIOS. 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 @@ -2171,10 +2166,6 @@ and is between 256 and 4096 characters. It is defined in the file [HW,MOUSE] Controls Logitech smartscroll autorepeat. 0 = disabled, 1 = enabled (default). - pss= [HW,OSS] Personal Sound System (ECHO ESC614) - Format: - <io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq> - pt. [PARIDE] See Documentation/blockdev/paride.txt. @@ -2312,6 +2303,13 @@ and is between 256 and 4096 characters. It is defined in the file If enabled at boot time, /selinux/disable can be used later to disable prior to initial policy load. + apparmor= [APPARMOR] Disable or enable AppArmor at boot time + Format: { "0" | "1" } + See security/apparmor/Kconfig help text + 0 -- disable. + 1 -- enable. + Default value is set via kernel config option. + serialnumber [BUGS=X86-32] shapers= [NET] @@ -2383,128 +2381,6 @@ and is between 256 and 4096 characters. It is defined in the file 1: Fast pin select (default) 2: ATC IRMode - snd-ad1816a= [HW,ALSA] - - snd-ad1848= [HW,ALSA] - - snd-ali5451= [HW,ALSA] - - snd-als100= [HW,ALSA] - - snd-als4000= [HW,ALSA] - - snd-azt2320= [HW,ALSA] - - snd-cmi8330= [HW,ALSA] - - snd-cmipci= [HW,ALSA] - - snd-cs4231= [HW,ALSA] - - snd-cs4232= [HW,ALSA] - - snd-cs4236= [HW,ALSA] - - snd-cs4281= [HW,ALSA] - - snd-cs46xx= [HW,ALSA] - - snd-dt019x= [HW,ALSA] - - snd-dummy= [HW,ALSA] - - snd-emu10k1= [HW,ALSA] - - snd-ens1370= [HW,ALSA] - - snd-ens1371= [HW,ALSA] - - snd-es968= [HW,ALSA] - - snd-es1688= [HW,ALSA] - - snd-es18xx= [HW,ALSA] - - snd-es1938= [HW,ALSA] - - snd-es1968= [HW,ALSA] - - snd-fm801= [HW,ALSA] - - snd-gusclassic= [HW,ALSA] - - snd-gusextreme= [HW,ALSA] - - snd-gusmax= [HW,ALSA] - - snd-hdsp= [HW,ALSA] - - snd-ice1712= [HW,ALSA] - - snd-intel8x0= [HW,ALSA] - - snd-interwave= [HW,ALSA] - - snd-interwave-stb= - [HW,ALSA] - - snd-korg1212= [HW,ALSA] - - snd-maestro3= [HW,ALSA] - - snd-mpu401= [HW,ALSA] - - snd-mtpav= [HW,ALSA] - - snd-nm256= [HW,ALSA] - - snd-opl3sa2= [HW,ALSA] - - snd-opti92x-ad1848= - [HW,ALSA] - - snd-opti92x-cs4231= - [HW,ALSA] - - snd-opti93x= [HW,ALSA] - - snd-pmac= [HW,ALSA] - - snd-rme32= [HW,ALSA] - - snd-rme96= [HW,ALSA] - - snd-rme9652= [HW,ALSA] - - snd-sb8= [HW,ALSA] - - snd-sb16= [HW,ALSA] - - snd-sbawe= [HW,ALSA] - - snd-serial= [HW,ALSA] - - snd-sgalaxy= [HW,ALSA] - - snd-sonicvibes= [HW,ALSA] - - snd-sun-amd7930= - [HW,ALSA] - - snd-sun-cs4231= [HW,ALSA] - - snd-trident= [HW,ALSA] - - snd-usb-audio= [HW,ALSA,USB] - - snd-via82xx= [HW,ALSA] - - snd-virmidi= [HW,ALSA] - - snd-wavefront= [HW,ALSA] - - snd-ymfpci= [HW,ALSA] - softlockup_panic= [KNL] Should the soft-lockup detector generate panics. @@ -2519,9 +2395,6 @@ and is between 256 and 4096 characters. It is defined in the file spia_pedr= spia_peddr= - sscape= [HW,OSS] - Format: <io>,<irq>,<dma>,<mpu_io>,<mpu_irq> - st= [HW,SCSI] SCSI tape parameters (buffers, etc.) See Documentation/scsi/st.txt. @@ -2661,10 +2534,6 @@ and is between 256 and 4096 characters. It is defined in the file to facilitate early boot debugging. See also Documentation/trace/events.txt - trix= [HW,OSS] MediaTrix AudioTrix Pro - Format: - <io>,<irq>,<dma>,<dma2>,<sb_io>,<sb_irq>,<sb_dma>,<mpu_io>,<mpu_irq> - tsc= Disable clocksource-must-verify flag for TSC. Format: <string> [x86] reliable: mark tsc clocksource as reliable, this @@ -2681,12 +2550,6 @@ and is between 256 and 4096 characters. It is defined in the file u14-34f= [HW,SCSI] UltraStor 14F/34F SCSI host adapter See header of drivers/scsi/u14-34f.c. - uart401= [HW,OSS] - Format: <io>,<irq> - - uart6850= [HW,OSS] - Format: <io>,<irq> - uhash_entries= [KNL,NET] Set number of hash buckets for UDP/UDP-Lite connections @@ -2852,9 +2715,6 @@ and is between 256 and 4096 characters. It is defined in the file overridden by individual drivers. 0 will hide cursors, 1 will display them. - waveartist= [HW,OSS] - Format: <io>,<irq>,<dma>,<dma2> - wd33c93= [HW,SCSI] See header of drivers/scsi/wd33c93.c. @@ -2879,6 +2739,16 @@ and is between 256 and 4096 characters. It is defined in the file xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks. xd_geo= See header of drivers/block/xd.c. + xen_emul_unplug= [HW,X86,XEN] + Unplug Xen emulated devices + Format: [unplug0,][unplug1] + ide-disks -- unplug primary master IDE devices + aux-ide-disks -- unplug non-primary-master IDE devices + nics -- unplug network devices + all -- unplug all emulated devices (NICs and IDE disks) + ignore -- continue loading the Xen platform PCI driver even + if the version check failed + xirc2ps_cs= [NET,PCMCIA] Format: <irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]] @@ -2887,5 +2757,4 @@ ______________________________________________________________________ TODO: - Add documentation for ALSA options. Add more DRM drivers. |