Lines Matching +full:num +full:- +full:ss +full:- +full:bits
21 log_buf_len=1M print-fatal-signals=1
23 log-buf-len=1M print_fatal_signals=1
27 "modinfo -p ${modulename}" shows a current list of all parameters of a loadable
31 "echo -n ${value} > /sys/module/${modulename}/parameters/${parm}".
57 IA-64 IA-64 architecture is enabled.
72 Documentation/m68k/kernel-options.txt.
85 PARISC The PA-RISC architecture is enabled.
97 the Documentation/scsi/ sub-directory.
117 X86-32 X86-32, aka i386 architecture is enabled.
118 X86-64 X86-64 architecture is enabled.
119 More X86-64 boot options can be found in
120 Documentation/x86/x86_64/boot-options.txt .
121 X86 Either 32-bit or 64-bit x86 (same as X86-32+X86-64)
127 KNL Is a kernel start-up parameter.
135 There are also arch-specific kernel-parameters not documented here.
136 See for example <Documentation/x86/x86_64/boot-options.txt>.
159 force -- enable ACPI if default was off
160 off -- disable ACPI if default was on
161 noirq -- do not use ACPI for IRQ routing
162 strict -- Be less tolerant of platforms that are not
164 rsdt -- prefer RSDT over (default) XSDT
165 copy_dsdt -- copy DSDT to memory
191 debug output. Bits in debug_layer correspond to a
194 Bits in debug_level correspond to a level in
236 acpi_osi="string1" # add string1 -- only one string
237 acpi_osi="!string2" # remove built-in string2
252 For broken nForce2 BIOS resulting in XT-PIC timer.
260 as soon as the kernel's real-mode entry point is called.
303 See Documentation/sound/alsa/alsa-parameters.txt
310 align_va_addr= [X86-64]
315 CPU-intensive style benchmark, and it can vary highly in
318 32: only for 32-bit processes
319 64: only for 64-bit processes
320 on: enable for both 32- and 64-bit processes
321 off: disable for both 32- and 64-bit processes
323 amd_iommu= [HW,X86-64]
326 fullflush - enable flushing of IO/TLB entries when
330 off - do not initialize any AMD IOMMU found in
332 force_isolation - Force device isolation for all
349 Power management functions (SPARCstation-4/5 + deriv.)
351 Disable APC CPU standby support. SPARCstation-Fox does
352 not play well with APC CPU idle - disable it if you have
355 apic= [APIC,X86-32] Advanced Programmable Interrupt Controller
359 when initialising the APIC and IO-APIC components.
367 to set it to "all" by meaning -- no limit here.
376 arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
400 autotest [IA-64]
429 bttv.pll= See Documentation/video4linux/bttv/Insmod-options
438 cachesize= [BUGS=X86-32] Override level 2 CPU cache size detection.
456 {Currently supported controllers - "memory"}
461 0 -- check protection applied by kernel (includes
463 1 -- check protection requested by application.
471 clock= [BUGS=X86-32, HW] gettimeofday clocksource override.
489 [X86-32] pit,hpet,tsc;
496 [X86-64] hpet,tsc
501 numbers. Note the Linux specific bits are not necessarily
509 some critical bits.
520 Range: 0 - 8192
523 com20020= [HW,NET] ARCnet - COM20020 chipset
527 com90io= [HW,NET] ARCnet - COM90xx chipset (IO-mapped buffers)
531 ARCnet - COM90xx chipset (memory-mapped buffers)
546 bits, and "f" is flow control ("r" for RTS or
549 See Documentation/serial-console.txt for more
556 Start an early, polled-mode console on the 8250/16550
576 disable the cpuidle sub-system
593 start-[end] where start and end are both
609 See also Documentation/input/joystick-parport.txt
612 time. See Documentation/dynamic-debug-howto.txt for
618 [KNL] verbose self-tests
621 self-tests.
623 1 will print _a lot_ more information - normally
704 entries for DMA-API debugging code. One entry is
705 required per DMA-API allocation. Use this if the
706 DMA-API debugging code disables itself because the
710 With this option the DMA-API debugging driver
722 Start an early, polled-mode console on the 8250/16550
724 MMIO inter-register address stride is either 8-bit
725 (mmio) or 32-bit (mmio32).
759 elanfreq= [X86-32]
765 See Documentation/block/cfq-iosched.txt and
766 Documentation/block/deadline-iosched.txt for details.
788 0 -- permissive (log only, no denials).
789 1 -- enforcing (deny and log).
811 See also Documentation/fault-injection/.
817 [IA-64] Avoid check_sal_cache_flush which may hang on
834 ftrace_filter=[function-list]
836 tracer at boot up. function-list is a comma separated
841 ftrace_notrace=[function-list]
843 function-list. This list can be changed at run time
847 ftrace_graph_filter=[function-list]
850 function-list is a comma separated list of functions
858 See also Documentation/input/joystick-parport.txt
866 gcov_persist= [GCOV] When non-zero (default), profiling data for
877 for 64-bit NUMA, off otherwise.
880 hcl= [IA-64] SGI's Hardware Graph compatibility layer
887 corresponding firmware-first mode error processing
904 hpet= [X86-32,HPET] option to control HPET usage
912 hugepages= [HW,X86-32,IA-64] HugeTLB pages to allocate at boot.
913 hugepagesz= [HW,IA-64,PPC,X86-64] The size of the HugeTLB pages.
914 On x86-64 and powerpc, this option can be specified
917 x86-64 are 2M (when the CPU supports "pse") and 1G
924 hvc_iucv_allow= [S390] Comma-separated list of z/VM user IDs.
941 i8042.direct [HW] Put keyboard port into non-translated mode
973 ide-core.nodma= [HW] (E)IDE subsystem
979 ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
995 idle=nomwait: Disable mwait for CPU C-states
998 Ignore loglevel setting - this will print /all/
1009 0 -- integrity auditing messages. (Default)
1010 1 -- enable informational integrity auditing messages.
1049 for io virtual address below 32-bit forcing dual
1051 than 32-bit addressing. The default is to look
1052 for translation below 32-bit and if not available
1065 1 to 6 specify maximum depth of C-state.
1067 intremap= [X86-64, Intel-IOMMU]
1072 BIOS x2APIC opt-out request will be ignored
1074 inttest= [IA-64]
1091 pt [x86, IA-64]
1092 group_mf [x86, IA-64]
1134 <cpu number>-<cpu number>
1137 <cpu number>,...,<cpu number>-<cpu number>
1144 "number of CPUs in system - 1".
1147 alternative -- manually setting the CPU mask of all
1148 tasks in the system -- can cause problems and
1158 kernelcore=nn[KMG] [KNL,X86,IA-64,PPC] This parameter
1160 for non-movable allocations. The requested amount is
1170 Note that allocations like PTEs-from-HighMem still
1181 gdb or control-c on the dbgp connection. When
1182 not using this parameter you use sysrq-g to break into
1187 or a supported polling keyboard driver (non-usb).
1199 Configure the RouterBoard 532 series on-chip
1202 kmemleak= [KNL] Boot-time kmemleak enable/disable
1216 kvm-amd.nested= [KVM,AMD] Allow nested virtualization in KVM/SVM.
1219 kvm-amd.npt= [KVM,AMD] Disable nested paging (virtualized MMU)
1221 Default is 1 (enabled) if in 64-bit or 32-bit PAE mode.
1223 kvm-intel.ept= [KVM,Intel] Disable extended page tables
1227 kvm-intel.emulate_invalid_guest_state=
1231 kvm-intel.flexpriority=
1235 kvm-intel.nested=
1239 kvm-intel.unrestricted_guest=
1244 kvm-intel.vpid= [KVM,Intel] Disable Virtual Processor Identification
1252 lapic [X86-32,APIC] Enable the local APIC even if BIOS
1286 first fan-out link behind PMP device. It does not
1300 * Transfer mode: pio[0-7], mwdma[0-4] and udma[0-7].
1346 7 (KERN_DEBUG) debug-level messages
1352 logo.nologo [FB] Disables display of the built-in Linux logo.
1370 an IEEE 1284-compliant printer is attached; if
1376 time-consuming boot-time autodetection (up to 250 ms per
1391 machvec= [IA-64] Force the use of a particular machine-vector
1397 Example: machtype=lemote-yeeloong-2f-7inch
1409 (loop.max_loop) unconditionally pre-created at init time. The default
1412 devices can be requested on-demand with the
1413 /dev/loop-control interface.
1415 mcatest= [IA-64]
1417 mce [X86-32] Machine Check Exception
1419 mce=option [X86-64] See Documentation/x86/x86_64/boot-options.txt
1431 [X86-32] Use together with memmap= to avoid physical
1435 mem=nopentium [BUGS=X86-32] Disable usage of 4MB pages for kernel
1440 per-device physically contiguous DMA buffers.
1445 BIOS output or other requirements. See the memmap=nn@ss
1448 memmap=nn[KMG]@ss[KMG]
1450 Region of memory to be used, from ss to ss+nn.
1452 memmap=nn[KMG]#ss[KMG]
1454 Region of memory to be used, from ss to ss+nn.
1456 memmap=nn[KMG]$ss[KMG]
1458 Region of memory to be used, from ss to ss+nn.
1459 Example: Exclude memory from 0x18690000-0x1869ffff
1472 repeatable BIOS-originated corruption always
1500 mfgpt_irq= [IA-32] Specify the IRQ to use for the
1501 Multi-Function General Purpose Timers on AMD Geode
1504 mfgptfix [X86-32] Fix MFGPT timers on AMD Geode platforms when
1518 0 - The attached screen is the 3.5" TFT
1519 1 - The attached screen is the 7" TFT
1520 2 - The VGA Shield is attached (1024x768)
1524 b - Enable backlight. The TFT backlight pin will be
1528 c - Enable the s3c camera interface.
1529 t - Reserved for enabling touchscreen support. The
1533 http://repo.or.cz/w/linux-2.6/mini2440.git
1554 movablecore=nn[KMG] [KNL,X86,IA-64,PPC] This parameter
1565 Format: <name>,<region-number>,<size>,<offset>
1568 <name>,<region-number>[,<base>,<size>,<buswidth>,<altbuswidth>]
1577 onenand.bdry= [HW,MTD] Flex-OneNAND Boundary Configuration
1581 boundary - index of last SLC block on Flex-OneNAND.
1583 lock - Configure if Flex-OneNAND boundary should be locked.
1590 See arch/arm/mach-s3c2412/mach-jive.c
1618 something different and driver-specific.
1631 nfsroot= [NFS] nfs root filesystem for disk-less boxes.
1654 [NFS] enable 64-bit inode numbers.
1655 If zero, the NFS client will fake up a 32-bit inode
1657 of returning the full 64-bit number.
1658 The default is to return 64-bit inode numbers.
1678 Format: [panic,][nopanic,][num]
1679 Valid num: 0
1680 0 - turn nmi_watchdog off
1692 no387 [BUGS=X86-32] Tells the kernel to use the 387 maths
1712 caches in the slab allocator. Saves per-node memory,
1729 nodelayacct [KNL] Disable per-task delay accounting
1737 noexec [IA-64]
1740 On X86-32 available only on PAE configured kernels.
1741 noexec=on: enable non-executable mappings (default)
1742 noexec=off: disable non-executable mappings
1748 noexec32 [X86-64]
1749 This affects only 32-bit executables.
1750 noexec32=on: enable non-executable mappings (default)
1752 noexec32=off: disable non-executable mappings
1757 nofxsr [BUGS=X86-32] Disables x86 floating point extended
1759 legacy floating-point registers on task switch.
1763 enabling legacy floating-point and sse state.
1769 no-hlt [BUGS=X86-32] Tells the kernel that the hlt
1777 nohalt [IA-64] Tells the kernel not to use the power saving
1779 power-consumption. On the positive side, it reduces
1780 interrupt wake-up latency, which may improve performance
1782 real-time systems.
1790 noirqdebug [X86-32] Disables the code which attempts to detect and
1801 nointremap [X86-64, Intel-IOMMU] Do not enable interrupt
1803 [Deprecated - use intremap=off]
1805 nointroute [IA-64]
1807 nojitter [IA-64] Disables jitter checking for ITC timers.
1809 no-kvmclock [X86,KVM] Disable paravirtualized KVM clock driver
1811 no-kvmapf [X86,KVM] Disable paravirtualized asynchronous page
1814 no-steal-acc [X86,KVM] Disable paravirtualized steal time accounting.
1818 nolapic [X86-32,APIC] Do not enable or use the local APIC.
1820 nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
1825 nomca [IA-64] Disable machine check abort handling
1827 nomce [X86-32] Machine Check Exception
1829 nomfgpt [X86-32] Disable Multi-Function General Purpose
1842 noreplace-paravirt [X86,IA-64,PV_OPS] Don't patch paravirt_ops
1844 noreplace-smp [X86-32,SMP] Don't replace SMP instructions
1857 no-scroll [VGA] Disables scrollback.
1858 This is required for the Braillex ib80-piezo Braille
1861 nosbagart [IA-64]
1863 nosep [BUGS=X86-32] Disables x86 SYSENTER/SYSEXIT support.
1868 nosoftlockup [KNL] Disable the soft-lockup detector.
1872 notsc [BUGS=X86-32] Disable Time Stamp Counter
1880 nox2apic [X86-64,APIC] Do not enable x2APIC mode.
1882 nptcg= [IA-64] Override max number of concurrent global TLB
1900 See Documentation/debugging-via-ohci1394.txt for more
1938 See Documentation/sound/oss/oss-parameters.txt
1990 bios [X86-32] force use of PCI BIOS, don't access
1992 has a non-standard PCI host bridge.
1993 nobios [X86-32] disallow use of PCI BIOS, only direct
2005 root domains (aka PCI segments, in ACPI-speak).
2013 disable the use of MSI interrupts system-wide.
2018 primary IO-APIC for bridges that cannot disable
2025 biosirq [X86-32] Use PCI BIOS calls to get the interrupt
2049 F0000h-100000h range.
2054 assign-busses [X86] Always assign all PCI bus
2077 firmware [ARM] Do not re-enumerate the bus but instead
2087 bfsort Sort PCI devices into breadth-first order.
2090 nobfsort Don't sort PCI devices into breadth-first order.
2104 PCI-PCI bridge can be specified, if resource
2107 end-to-end CRC checking).
2123 associated with PCIe ports (PME, hot-plug, AER). Use
2127 compat Treat PCIe ports as PCI-to-PCI bridges, disable the PCIe
2157 pirq= [SMP,APIC] Manual mp-table setup
2158 See Documentation/x86/i386/IO-APIC.txt.
2170 CONFIG_PNP_DEBUG_MESSAGES option). Change at run-time
2179 { on | off | curr | res | no-curr | no-res }
2201 print-fatal-signals=
2207 coredump - etc.
2210 you might want to try "ulimit -i unlimited".
2224 Limit processor to maximum C-state
2228 Ignore the _CST method to determine C-states,
2233 Param: "schedule" - profile schedule points.
2234 Param: <number> - step/bucket size as a power of 2 for
2236 Param: "sleep" - profile D-state sleeping (millisecs).
2238 Param: "kvm" - profile VM exits.
2263 [KNL] Number of legacy pty's. Overwrites compiled-in
2289 batch limiting is re-enabled.
2296 reboot= [BUGS=X86-32,BUGS=ARM,BUGS=IA-64] Rebooting mode
2306 reservetop= [X86-32]
2326 See Documentation/power/swsusp-and-swap-files.txt
2348 ro [KNL] Mount root device read-only on boot
2364 rw [KNL] Mount root device read-write on boot
2384 0 -- disable.
2385 1 -- enable.
2393 0 -- disable.
2394 1 -- enable.
2397 serialnumber [BUGS=X86-32]
2402 show_msr= [x86] show boot-time MSR settings
2404 Show boot-time (BIOS-initialized) MSR settings.
2408 simeth= [IA-64]
2457 smp-alt-once [X86-32,SMP] On a hotplug CPU system, only
2460 smsc-ircc2.nopnp [HW] Don't use PNP to discover SMC devices
2461 smsc-ircc2.ircc_cfg= [HW] Device configuration I/O port
2462 smsc-ircc2.ircc_sir= [HW] SIR base I/O port
2463 smsc-ircc2.ircc_fir= [HW] FIR base I/O port
2464 smsc-ircc2.ircc_irq= [HW] IRQ line
2465 smsc-ircc2.ircc_dma= [HW] DMA channel
2466 smsc-ircc2.ircc_transceiver= [HW] Transceiver type:
2472 [KNL] Should the soft-lockup detector generate panics.
2478 specialix= [HW,SERIAL] Specialix multi-serial port adapter
2489 stacktrace_filter=[function-list]
2491 will trace at boot up. function-list is a comma separated
2498 Format: <num>
2499 Set the STI (builtin display/keyboard on the HP-PARISC
2501 as the initial boot-console.
2536 to global on non-NUMA machines)
2552 swiotlb= [IA-64] Number of I/O TLB slabs
2567 Ignore sysrq setting - this boot parameter will
2574 Specify "mem" (for Suspend-to-RAM) or "standby" (for
2577 this state using a wakeup-capable RTC alarm.
2583 -1: disable all active trip points in all thermal zones
2587 -1: disable all critical trip points in all thermal zones
2598 -1: disable all passive trip points
2604 <deci-seconds>: poll all this frequency
2633 trace_event=[event-list]
2643 high-resolution timer mode on older hardware, and in
2654 See also Documentation/input/joystick-parport.txt
2656 udbg-immortal [PPC] When debugging early kernel crashes that
2662 Set number of hash buckets for UDP/UDP-Lite connections
2664 uhci-hcd.ignore_oc=
2666 Some badly-designed motherboards generate lots of
2677 (default -1 = authorized except for wireless USB,
2682 for newly-detected USB devices (default 2). This
2706 [USB] Specifies timeout for the initial 64-byte
2713 usb-storage.delay_use=
2717 usb-storage.quirks=
2719 override the built-in unusual_devs list. List
2722 and Product ID values (4-digit hex numbers) and
2724 to a common usb-storage quirk flag as follows:
2753 medium is write-protected).
2759 1 - undefined instruction events
2760 2 - system calls
2761 4 - invalid data aborts
2762 8 - SIGSEGV faults
2763 16 - SIGBUS faults
2780 vdso32=1: enable 32-bit VDSO (default)
2781 vdso32=0: disable 32-bit VDSO mapping
2783 vector= [IA-64,SMP]
2789 vga= [BOOT,X86-32] Select a particular video mode
2811 vsyscall= [X86-64]
2814 code). Most statically-linked binaries and older
2835 see VGA-softcursor.txt. Default: 2 = underline.
2840 This is a 16-member array composed of values
2841 ranging from 0-255.
2846 This is a 16-member array composed of values
2847 ranging from 0-255.
2852 This is a 16-member array composed of values
2853 ranging from 0-255.
2858 Set system-wide default UTF-8 mode for all tty's.
2859 Default is 1, i.e. UTF-8 mode is enabled for all
2864 Format=<-1|0|1>
2865 Set system-wide default for whether a cursor
2866 is shown on new VTs. Default is -1,
2872 see Documentation/watchdog/watchdog-parameters.txt
2873 or other driver-specific files in the
2876 x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of
2880 x86_mrst_timer= [X86-32,APBT]
2886 xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks.
2892 ide-disks -- unplug primary master IDE devices
2893 aux-ide-disks -- unplug non-primary-master IDE devices
2894 nics -- unplug network devices
2895 all -- unplug all emulated devices (NICs and IDE disks)
2896 unnecessary -- unplugging emulated devices is
2899 never -- do not unplug even if version check succeeds