X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Documentation%2Fkernel-parameters.txt;h=33121d6c827c6e5fcc85d72b1f5ee5f166b743a2;hb=f16c960332b125491178fc2da7ea7893b0d65d05;hp=0a3fed445249f84b8e42c9f904d0e0df16a75d42;hpb=b04cde34cf1d006dfaf8523640f3a18bbb15ebaa;p=linux-2.6 diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 0a3fed4452..33121d6c82 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -222,9 +222,6 @@ and is between 256 and 4096 characters. It is defined in the file 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 @@ -297,9 +294,6 @@ and is between 256 and 4096 characters. It is defined in the file apm= [APM] Advanced Power Management See header of arch/i386/kernel/apm.c. - applicom= [HW] - Format: , - arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards Format: ,, @@ -345,12 +339,6 @@ and is between 256 and 4096 characters. It is defined in the file Format: ,, 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). @@ -431,8 +419,11 @@ and is between 256 and 4096 characters. It is defined in the file 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, nVidia) com20020= [HW,NET] ARCnet - COM20020 chipset Format: @@ -513,8 +504,6 @@ and is between 256 and 4096 characters. It is defined in the file 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. @@ -572,10 +561,6 @@ and is between 256 and 4096 characters. It is defined in the file See drivers/char/README.epca and Documentation/digiepca.txt. - dmascc= [HW,AX25,SERIAL] AX.25 Z80SCC driver with DMA - support available. - Format: [,[,..]] - dmasound= [HW,OSS] Sound subsystem buffers dscc4.setup= [NET] @@ -601,22 +586,10 @@ and is between 256 and 4096 characters. It is defined in the file eata= [HW,SCSI] - ec_intr= [HW,ACPI] ACPI Embedded Controller interrupt mode - Format: - 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: ,, - eisa_irq_edge= [PARISC,HW] See header of drivers/parisc/eisa.c. @@ -795,6 +768,23 @@ and is between 256 and 4096 characters. It is defined in the file 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. @@ -892,9 +882,6 @@ and is between 256 and 4096 characters. It is defined in the file 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:,irq: - libata.noacpi [LIBATA] Disables use of ACPI in libata suspend/resume when set. Format: @@ -1142,9 +1129,6 @@ and is between 256 and 4096 characters. It is defined in the file 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. @@ -1455,7 +1439,9 @@ and is between 256 and 4096 characters. It is defined in the file Param: "schedule" - profile schedule points. Param: - step/bucket size as a power of 2 for statistical time based profiling. - Param: "sleep" - profile D-state sleeping (millisecs) + Param: "sleep" - profile D-state sleeping (millisecs). + Requires CONFIG_SCHEDSTATS + Param: "kvm" - profile VM exits. processor.max_cstate= [HW,ACPI] Limit processor to maximum C-state @@ -1582,9 +1568,6 @@ and is between 256 and 4096 characters. It is defined in the file sa1100ir [NET] See drivers/net/irda/sa1100_ir.c. - sb= [HW,OSS] - Format: ,,, - sbni= [NET] Granch SBNI12 leased line adapter sc1200wdt= [HW,WDT] SC1200 WDT (watchdog) driver @@ -1628,8 +1611,6 @@ and is between 256 and 4096 characters. It is defined in the file serialnumber [BUGS=X86-32] - sg_def_reserved_size= [SCSI] - shapers= [NET] Maximal number of shapers. @@ -2020,10 +2001,6 @@ and is between 256 and 4096 characters. It is defined in the file 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: