diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 59 |
1 files changed, 47 insertions, 12 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index f4a04c0c7edc..5438a2d7907f 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -245,7 +245,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. acpi_sleep= [HW,ACPI] Sleep options Format: { s3_bios, s3_mode, s3_beep, s4_nohwsig, - old_ordering, s4_nonvs, sci_force_enable } + old_ordering, nonvs, sci_force_enable } See Documentation/power/video.txt for information on s3_bios and s3_mode. s3_beep is for debugging; it makes the PC's speaker beep @@ -626,6 +626,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. disable= [IPV6] See Documentation/networking/ipv6.txt. + disable_ddw [PPC/PSERIES] + Disable Dynamic DMA Window support. Use this if + to workaround buggy firmware. + disable_ipv6= [IPV6] See Documentation/networking/ipv6.txt. @@ -695,7 +699,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. ekgdboc= [X86,KGDB] Allow early kernel console debugging ekgdboc=kbd - This is desgined to be used in conjunction with + This is designed to be used in conjunction with the boot argument: earlyprintk=vga edd= [EDD] @@ -868,6 +872,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. If specified, z/VM IUCV HVC accepts connections from listed z/VM user IDs only. + keep_bootcon [KNL] + Do not unregister boot console at start. This is only + useful for debugging when something happens in the window + between unregistering the boot console and initializing + the real console. + i2c_bus= [HW] Override the default board specific I2C bus speed or register an additional I2C bus that is not registered from board initialization code. @@ -1580,16 +1590,25 @@ bytes respectively. Such letter suffixes can also be entirely omitted. of returning the full 64-bit number. The default is to return 64-bit inode numbers. + nfs.nfs4_disable_idmapping= + [NFSv4] When set, this option disables the NFSv4 + idmapper on the client, but only if the mount + is using the 'sec=sys' security flavour. This may + make migration from legacy NFSv2/v3 systems easier + provided that the server has the appropriate support. + The default is to always enable NFSv4 idmapping. + nmi_debug= [KNL,AVR32,SH] Specify one or more actions to take when a NMI is triggered. Format: [state][,regs][,debounce][,die] nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels - Format: [panic,][num] + Format: [panic,][nopanic,][num] Valid num: 0 0 - turn nmi_watchdog off When panic is specified, panic when an NMI watchdog - timeout occurs. + timeout occurs (or 'nopanic' to override the opposite + default). This is useful when you use a panic=... timeout and need the box quickly up again. @@ -1645,6 +1664,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. noexec=on: enable non-executable mappings (default) noexec=off: disable non-executable mappings + nosmep [X86] + Disable SMEP (Supervisor Mode Execution Protection) + even if it is supported by processor. + noexec32 [X86-64] This affects only 32-bit executables. noexec32=on: enable non-executable mappings (default) @@ -1754,9 +1777,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nosoftlockup [KNL] Disable the soft-lockup detector. - noswapaccount [KNL] Disable accounting of swap in memory resource - controller. (See Documentation/cgroups/memory.txt) - nosync [HW,M68K] Disables sync negotiation for all devices. notsc [BUGS=X86-32] Disable Time Stamp Counter @@ -1813,10 +1833,17 @@ bytes respectively. Such letter suffixes can also be entirely omitted. perfmon on Intel CPUs instead of the CPU specific event set. + oops=panic Always panic on oopses. Default is to just kill the + process, but there is a small probability of + deadlocking the machine. + This will also cause panics on machine check exceptions. + Useful together with panic=30 to trigger a reboot. + OSS [HW,OSS] See Documentation/sound/oss/oss-parameters.txt - panic= [KNL] Kernel behaviour on panic + panic= [KNL] Kernel behaviour on panic: delay <timeout> + seconds before rebooting Format: <timeout> parkbd.port= [HW] Parallel port number the keyboard adapter is @@ -2319,6 +2346,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. softlockup_panic= [KNL] Should the soft-lockup detector generate panics. + Format: <integer> sonypi.*= [HW] Sony Programmable I/O Control Device driver See Documentation/sonypi.txt @@ -2444,11 +2472,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted. <deci-seconds>: poll all this frequency 0: no polling (default) + threadirqs [KNL] + Force threading of all interrupt handlers except those + marked explicitely IRQF_NO_THREAD. + topology= [S390] Format: {off | on} Specify if the kernel should make use of the cpu - topology informations if the hardware supports these. - The scheduler will make use of these informations and + topology information if the hardware supports this. + The scheduler will make use of this information and e.g. base its process migration decisions on it. Default is on. @@ -2501,8 +2533,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. reported either. unknown_nmi_panic - [X86] - Set unknown_nmi_panic=1 early on boot. + [X86] Cause panic on unknown NMI. usbcore.autosuspend= [USB] The autosuspend time delay (in seconds) used @@ -2551,6 +2582,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. bytes of sense data); c = FIX_CAPACITY (decrease the reported device capacity by one sector); + d = NO_READ_DISC_INFO (don't use + READ_DISC_INFO command); + e = NO_READ_CAPACITY_16 (don't use + READ_CAPACITY_16 command); h = CAPACITY_HEURISTICS (decrease the reported device capacity by one sector if the number is odd); |