diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 63 |
1 files changed, 56 insertions, 7 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index b7d44871effc..87d40a72f6a1 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -608,6 +608,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. cut the overhead, others just disable the usage. So only cgroup_disable=memory is actually worthy} + cgroup.memory= [KNL] Pass options to the cgroup memory controller. + Format: <string> + nosocket -- Disable socket memory accounting. + nokmem -- Disable kernel memory accounting. + checkreqprot [SELINUX] Set initial checkreqprot flag value. Format: { "0" | "1" } See security/selinux/Kconfig help text. @@ -1449,6 +1454,41 @@ bytes respectively. Such letter suffixes can also be entirely omitted. In such case C2/C3 won't be used again. idle=nomwait: Disable mwait for CPU C-states + ieee754= [MIPS] Select IEEE Std 754 conformance mode + Format: { strict | legacy | 2008 | relaxed } + Default: strict + + Choose which programs will be accepted for execution + based on the IEEE 754 NaN encoding(s) supported by + the FPU and the NaN encoding requested with the value + of an ELF file header flag individually set by each + binary. Hardware implementations are permitted to + support either or both of the legacy and the 2008 NaN + encoding mode. + + Available settings are as follows: + strict accept binaries that request a NaN encoding + supported by the FPU + legacy only accept legacy-NaN binaries, if supported + by the FPU + 2008 only accept 2008-NaN binaries, if supported + by the FPU + relaxed accept any binaries regardless of whether + supported by the FPU + + The FPU emulator is always able to support both NaN + encodings, so if no FPU hardware is present or it has + been disabled with 'nofpu', then the settings of + 'legacy' and '2008' strap the emulator accordingly, + 'relaxed' straps the emulator for both legacy-NaN and + 2008-NaN, whereas 'strict' enables legacy-NaN only on + legacy processors and both NaN encodings on MIPS32 or + MIPS64 CPUs. + + The setting for ABS.fmt/NEG.fmt instruction execution + mode generally follows that for the NaN encoding, + except where unsupported by hardware. + ignore_loglevel [KNL] Ignore loglevel setting - this will print /all/ kernel messages to the console. Useful for debugging. @@ -2744,10 +2784,16 @@ bytes respectively. Such letter suffixes can also be entirely omitted. hardware access methods are allowed. Use this if you experience crashes upon bootup and you suspect they are caused by the BIOS. - conf1 [X86] Force use of PCI Configuration - Mechanism 1. - conf2 [X86] Force use of PCI Configuration - Mechanism 2. + conf1 [X86] Force use of PCI Configuration Access + Mechanism 1 (config address in IO port 0xCF8, + data in IO port 0xCFC, both 32-bit). + conf2 [X86] Force use of PCI Configuration Access + Mechanism 2 (IO port 0xCF8 is an 8-bit port for + the function, IO port 0xCFA, also 8-bit, sets + bus number. The config space is then accessed + through ports 0xC000-0xCFFF). + See http://wiki.osdev.org/PCI for more info + on the configuration access mechanisms. noaer [PCIE] If the PCIEAER kernel config parameter is enabled, this kernel boot option can be used to disable the use of PCIE advanced error reporting. @@ -2989,6 +3035,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. may be specified. Format: <port>,<port>.... + ppc_strict_facility_enable + [PPC] This option catches any kernel floating point, + Altivec, VSX and SPE outside of regions specifically + allowed (eg kernel_enable_fpu()/kernel_disable_fpu()). + There is some performance impact when enabling this. + print-fatal-signals= [KNL] debug: print fatal signals @@ -3061,9 +3113,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. raid= [HW,RAID] See Documentation/md.txt. - ramdisk_blocksize= [RAM] - See Documentation/blockdev/ramdisk.txt. - ramdisk_size= [RAM] Sizes of RAM disks in kilobytes See Documentation/blockdev/ramdisk.txt. |