Warning: Many of these options can produce a lot of
output and make your system unusable. Be very careful.
-
- acpi_fake_ecdt [HW,ACPI] Workaround failure due to BIOS lacking ECDT
-
acpi_pm_good [X86-32,X86-64]
Override the pmtimer bug detection: force the kernel
to assume that this machine's pmtimer latches its value
apm= [APM] Advanced Power Management
See header of arch/i386/kernel/apm.c.
- applicom= [HW]
- Format: <mem>,<irq>
-
arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
Format: <io>,<irq>,<nodeID>
Format: <io>,<irq>,<mode>
See header of drivers/net/hamradio/baycom_ser_hdx.c.
- blkmtd_device= [HW,MTD]
- blkmtd_erasesz=
- blkmtd_ro=
- blkmtd_bs=
- blkmtd_count=
-
boot_delay= Milliseconds to delay each printk during boot.
Values larger than 10 seconds (10000) are changed to
no delay (0).
over the 8254 in addition to over the IO-APIC. The
kernel tries to set a sensible default.
- hpet= [X86-32,HPET] option to disable HPET and use PIT.
- Format: disable
+ hpet= [X86-32,HPET] option to control HPET usage
+ Format: { enable (default) | disable | force }
+ disable: disable HPET and use PIT instead
+ force: allow force enabled of undocumented chips (ICH4, VIA)
com20020= [HW,NET] ARCnet - COM20020 chipset
Format:
[KNL] Reserve a chunk of physical memory to
hold a kernel to switch to with kexec on panic.
+ crashkernel=range1:size1[,range2:size2,...][@offset]
+ [KNL] Same as above, but depends on the memory
+ in the running system. The syntax of range is
+ start-[end] where start and end are both
+ a memory unit (amount[KMG]). See also
+ Documentation/kdump/kdump.txt for a example.
+
cs4232= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>,<mpuio>,<mpuirq>
cs89x0_media= [HW,NET]
Format: { rj45 | aui | bnc }
- cyclades= [HW,SERIAL] Cyclades multi-serial port adapter.
-
dasd= [HW,NET]
See header of drivers/s390/block/dasd_devmap.c.
See drivers/char/README.epca and
Documentation/digiepca.txt.
- dmascc= [HW,AX25,SERIAL] AX.25 Z80SCC driver with DMA
- support available.
- Format: <io_dev0>[,<io_dev1>[,..<io_dev32>]]
-
dmasound= [HW,OSS] Sound subsystem buffers
dscc4.setup= [NET]
0: polling mode
non-0: interrupt mode (default)
- eda= [HW,PS2]
-
- edb= [HW,PS2]
-
edd= [EDD]
Format: {"of[f]" | "sk[ipmbr]"}
See comment in arch/i386/boot/edd.S
- eicon= [HW,ISDN]
- Format: <id>,<membase>,<irq>
-
eisa_irq_edge= [PARISC,HW]
See header of drivers/parisc/eisa.c.
inttest= [IA64]
+ intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
+ off
+ Disable intel iommu driver.
+ igfx_off [Default Off]
+ By default, gfx is mapped as normal device. If a gfx
+ device has a dedicated DMAR unit, the DMAR unit is
+ bypassed by not enabling DMAR with this option. In
+ this case, gfx device will use physical address for
+ DMA.
+ forcedac [x86_64]
+ With this option iommu will not optimize to look
+ for io virtual address below 32 bit forcing dual
+ address cycle on pci bus for cards supporting greater
+ than 32 bit addressing. The default is to look
+ for translation below 32 bit and if not available
+ then look in the higher range.
+
io7= [HW] IO7 for Marvel based alpha systems
See comment before marvel_specify_io7 in
arch/alpha/kernel/core_marvel.c.
lapic_timer_c2_ok [X86-32,x86-64,APIC] trust the local apic timer in
C2 power state.
- lasi= [HW,SCSI] PARISC LASI driver for the 53c700 chip
- Format: addr:<io>,irq:<irq>
-
libata.noacpi [LIBATA] Disables use of ACPI in libata suspend/resume
when set.
Format: <int>
noapic [SMP,APIC] Tells the kernel to not make use of any
IOAPICs that may be present in the system.
- noasync [HW,M68K] Disables async and sync negotiation for
- all devices.
-
nobats [PPC] Do not use BATs for mapping kernel lowmem
on "Classic" PPC cores.
Param: <number> - step/bucket size as a power of 2 for
statistical time based profiling.
Param: "sleep" - profile D-state sleeping (millisecs)
+ Param: "kvm" - profile VM exits.
processor.max_cstate= [HW,ACPI]
Limit processor to maximum C-state
sa1100ir [NET]
See drivers/net/irda/sa1100_ir.c.
- sb= [HW,OSS]
- Format: <io>,<irq>,<dma>,<dma2>
-
sbni= [NET] Granch SBNI12 leased line adapter
sc1200wdt= [HW,WDT] SC1200 WDT (watchdog) driver
serialnumber [BUGS=X86-32]
- sg_def_reserved_size= [SCSI]
-
shapers= [NET]
Maximal number of shapers.
norandmaps Don't use address space randomization
Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space
- unwind_debug=N N > 0 will enable dwarf2 unwinder debugging
- This is useful to get more information why
- you got a "dwarf2 unwinder stuck"
-
______________________________________________________________________
TODO:
projects / linux-2.6-omap-h63xx.git / blobdiff