diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 59 |
1 files changed, 21 insertions, 38 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 766abdab94e..ff571f9298e 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -110,6 +110,13 @@ be entered as an environment variable, whereas its absence indicates that it will appear as a kernel argument readable via /proc/cmdline by programs running once the system is up. +The number of kernel parameters is not limited, but the length of the +complete command line (parameters including spaces etc.) is limited to +a fixed number of characters. This limit depends on the architecture +and is between 256 and 4096 characters. It is defined in the file +./include/asm/setup.h as COMMAND_LINE_SIZE. + + 53c7xx= [HW,SCSI] Amiga SCSI controllers See header of drivers/scsi/53c7xx.c. See also Documentation/scsi/ncr53c7xx.txt. @@ -282,9 +289,6 @@ running once the system is up. autotest [IA64] - awe= [HW,OSS] AWE32/SB32/AWE64 wave table synth - Format: <io>,<memsize>,<isapnp> - aztcd= [HW,CD] Aztech CD268 CDROM driver Format: <io>,0x79 (?) @@ -348,9 +352,9 @@ running once the system is up. clock= [BUGS=IA-32, HW] gettimeofday clocksource override. [Deprecated] - Forces specified clocksource (if avaliable) to be used + Forces specified clocksource (if available) to be used when calculating gettimeofday(). If specified - clocksource is not avalible, it defaults to PIT. + clocksource is not available, it defaults to PIT. Format: { pit | tsc | cyclone | pmtmr } disable_8254_timer @@ -529,10 +533,6 @@ running once the system is up. Default value is 0. Value can be changed at runtime via /selinux/enforce. - es1370= [HW,OSS] - Format: <lineout>[,<micbias>] - See also header of sound/oss/es1370.c. - es1371= [HW,OSS] Format: <spdif>,[<nomix>,[<amplifier>]] See also header of sound/oss/es1371.c. @@ -573,11 +573,6 @@ running once the system is up. gscd= [HW,CD] Format: <io> - gt96100eth= [NET] MIPS GT96100 Advanced Communication Controller - - gus= [HW,OSS] - Format: <io>,<irq>,<dma>,<dma16> - gvp11= [HW,SCSI] hashdist= [KNL,NUMA] Large hashes allocated during boot @@ -606,8 +601,8 @@ running once the system is up. noirqbalance [IA-32,SMP,KNL] Disable kernel irq balancing i8042.direct [HW] Put keyboard port into non-translated mode - i8042.dumbkbd [HW] Pretend that controlled can only read data from - keyboard and can not control its state + i8042.dumbkbd [HW] Pretend that controller can only read data from + keyboard and cannot control its state (Don't attempt to blink the leds) i8042.noaux [HW] Don't check for auxiliary (== mouse) port i8042.nokbd [HW] Don't check/create keyboard port @@ -836,12 +831,6 @@ running once the system is up. (machvec) in a generic kernel. Example: machvec=hpzx1_swiotlb - mad16= [HW,OSS] Format: - <io>,<irq>,<dma>,<dma16>,<mpu_io>,<mpu_irq>,<joystick> - - maui= [HW,OSS] - Format: <io>,<irq> - max_loop= [LOOP] Maximum number of loopback devices that can be mounted Format: <1-256> @@ -1109,9 +1098,6 @@ running once the system is up. opl3= [HW,OSS] Format: <io> - opl3sa= [HW,OSS] - Format: <io>,<irq>,<dma>,<dma2>,<mpu_io>,<mpu_irq> - opl3sa2= [HW,OSS] Format: <io>,<irq>,<dma>,<dma2>,<mss_io>,<mpu_io>,<ymode>,<loopback>[,<isapnp>,<multiple] @@ -1240,7 +1226,11 @@ running once the system is up. bootloader. This is currently used on IXP2000 systems where the bus has to be configured a certain way for adjunct CPUs. - + noearly [X86] Don't do any early type 1 scanning. + This might help on some broken boards which + machine check when some devices' config space + is read. But various workarounds are disabled + and some IOMMU drivers will not work. pcmv= [HW,PCMCIA] BadgePAD 4 pd. [PARIDE] @@ -1322,7 +1312,7 @@ running once the system is up. pt. [PARIDE] See Documentation/paride.txt. - quiet= [KNL] Disable log messages + quiet [KNL] Disable most log messages r128= [HW,DRM] @@ -1348,10 +1338,6 @@ running once the system is up. rcu.qlowmark= [KNL,BOOT] Set threshold of queued RCU callbacks below which batch limiting is re-enabled. - rcu.rsinterval= [KNL,BOOT,SMP] Set the number of additional - RCU callbacks to queued before forcing reschedule - on all cpus. - rdinit= [KNL] Format: <full_path> Run specified binary instead of /init from the ramdisk, @@ -1359,7 +1345,7 @@ running once the system is up. reboot= [BUGS=IA-32,BUGS=ARM,BUGS=IA-64] Rebooting mode Format: <reboot_mode>[,<reboot_mode2>[,...]] - See arch/*/kernel/reboot.c. + See arch/*/kernel/reboot.c or arch/*/kernel/process.c reserve= [KNL,BUGS] Force the kernel to ignore some iomem area @@ -1368,6 +1354,9 @@ running once the system is up. Reserves a hole at the top of the kernel virtual address space. + reset_devices [KNL] Force drivers to reset the underlying device + during initialization. + resume= [SWSUSP] Specify the partition device for software suspend @@ -1443,9 +1432,6 @@ running once the system is up. sg_def_reserved_size= [SCSI] - sgalaxy= [HW,OSS] - Format: <io>,<irq>,<dma>,<dma2>,<sgbase> - shapers= [NET] Maximal number of shapers. @@ -1586,9 +1572,6 @@ running once the system is up. snd-ymfpci= [HW,ALSA] - sonicvibes= [HW,OSS] - Format: <reverb> - sonycd535= [HW,CD] Format: <io>[,<irq>] |