diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 60 |
1 files changed, 43 insertions, 17 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index b12bacd252fc..1808f1157f30 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -58,6 +58,7 @@ parameter is applicable: ISAPNP ISA PnP code is enabled. ISDN Appropriate ISDN support is enabled. JOY Appropriate joystick support is enabled. + KGDB Kernel debugger support is enabled. KVM Kernel Virtual Machine support is enabled. LIBATA Libata driver is enabled LP Printer support is enabled. @@ -144,11 +145,10 @@ and is between 256 and 4096 characters. It is defined in the file acpi= [HW,ACPI,X86] Advanced Configuration and Power Interface - Format: { force | off | ht | strict | noirq | rsdt } + Format: { force | off | strict | noirq | rsdt } force -- enable ACPI if default was off off -- disable ACPI if default was on noirq -- do not use ACPI for IRQ routing - ht -- run only enough ACPI to enable Hyper Threading strict -- Be less tolerant of platforms that are not strictly ACPI specification compliant. rsdt -- prefer RSDT over (default) XSDT @@ -289,9 +289,6 @@ and is between 256 and 4096 characters. It is defined in the file advansys= [HW,SCSI] See header of drivers/scsi/advansys.c. - advwdt= [HW,WDT] Advantech WDT - Format: <iostart>,<iostop> - 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. @@ -712,6 +709,12 @@ and is between 256 and 4096 characters. It is defined in the file The VGA output is eventually overwritten by the real console. + ekgdboc= [X86,KGDB] Allow early kernel console debugging + ekgdboc=kbd + + This is desgined to be used in conjunction with + the boot argument: earlyprintk=vga + eata= [HW,SCSI] edd= [EDD] @@ -754,13 +757,14 @@ and is between 256 and 4096 characters. It is defined in the file Default value is 0. Value can be changed at runtime via /selinux/enforce. + erst_disable [ACPI] + Disable Error Record Serialization Table (ERST) + support. + ether= [HW,NET] Ethernet cards parameters This option is obsoleted by the "netdev=" option, which has equivalent usage. See its documentation for details. - eurwdt= [HW,WDT] Eurotech CPU-1220/1410 onboard watchdog. - Format: <io>[,<irq>] - failslab= fail_page_alloc= fail_make_request=[KNL] @@ -851,6 +855,11 @@ and is between 256 and 4096 characters. It is defined in the file hd= [EIDE] (E)IDE hard drive subsystem geometry Format: <cyl>,<head>,<sect> + hest_disable [ACPI] + Disable Hardware Error Source Table (HEST) support; + corresponding firmware-first mode error processing + logic will be disabled. + highmem=nn[KMG] [KNL,BOOT] forces the highmem zone to have an exact size of <nn>. This works even on boxes that have no highmem otherwise. This also works to reduce highmem @@ -1120,10 +1129,26 @@ and is between 256 and 4096 characters. It is defined in the file use the HighMem zone if it exists, and the Normal zone if it does not. - kgdboc= [HW] kgdb over consoles. - Requires a tty driver that supports console polling. - (only serial supported for now) - Format: <serial_device>[,baud] + kgdbdbgp= [KGDB,HW] kgdb over EHCI usb debug port. + Format: <Controller#>[,poll interval] + The controller # is the number of the ehci usb debug + port as it is probed via PCI. The poll interval is + optional and is the number seconds in between + each poll cycle to the debug port in case you need + the functionality for interrupting the kernel with + gdb or control-c on the dbgp connection. When + not using this parameter you use sysrq-g to break into + the kernel debugger. + + 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] + + kgdbwait [KGDB] Stop kernel execution and enter the + kernel debugger at the earliest opportunity. kmac= [MIPS] korina ethernet MAC address. Configure the RouterBoard 532 series on-chip @@ -1235,6 +1260,8 @@ and is between 256 and 4096 characters. It is defined in the file * nohrst, nosrst, norst: suppress hard, soft and both resets. + * dump_id: dump IDENTIFY data. + If there are multiple matching configurations changing the same attribute, the last one is used. @@ -2244,9 +2271,6 @@ and is between 256 and 4096 characters. It is defined in the file sched_debug [KNL] Enables verbose scheduler debug messages. - sc1200wdt= [HW,WDT] SC1200 WDT (watchdog) driver - Format: <io>[,<timeout>[,<isapnp>]] - scsi_debug_*= [SCSI] See drivers/scsi/scsi_debug.c. @@ -2835,8 +2859,10 @@ and is between 256 and 4096 characters. It is defined in the file wd7000= [HW,SCSI] See header of drivers/scsi/wd7000.c. - wdt= [WDT] Watchdog - See Documentation/watchdog/wdt.txt. + watchdog timers [HW,WDT] For information on watchdog timers, + see Documentation/watchdog/watchdog-parameters.txt + or other driver-specific files in the + Documentation/watchdog/ directory. x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of default x2apic cluster mode on platforms |