diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 59 |
1 files changed, 49 insertions, 10 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index dafd001bf833..e5f3d918316f 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -366,6 +366,12 @@ and is between 256 and 4096 characters. It is defined in the file possible to determine what the correct size should be. This option provides an override for these situations. + security= [SECURITY] Choose a security module to enable at boot. + If this boot parameter is not specified, only the first + security module asking for security registration will be + loaded. An invalid security module name will be treated + as if no module has been chosen. + capability.disable= [SECURITY] Disable capabilities. This would normally be used only if an alternative security model is to be @@ -763,11 +769,7 @@ and is between 256 and 4096 characters. It is defined in the file Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]] ide= [HW] (E)IDE subsystem - Format: ide=nodma or ide=doubler or ide=reverse - See Documentation/ide/ide.txt. - - ide?= [HW] (E)IDE subsystem - Format: ide?=noprobe or chipset specific parameters. + Format: ide=nodma or ide=doubler See Documentation/ide/ide.txt. idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed @@ -812,6 +814,19 @@ and is between 256 and 4096 characters. It is defined in the file inttest= [IA64] + iommu= [x86] + off + force + noforce + biomerge + panic + nopanic + merge + nomerge + forcesac + soft + + intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option off Disable intel iommu driver. @@ -828,6 +843,10 @@ and is between 256 and 4096 characters. It is defined in the file than 32 bit addressing. The default is to look for translation below 32 bit and if not available then look in the higher range. + strict [Default Off] + With this option on every unmap_single operation will + result in a hardware IOTLB flush operation as opposed + to batching them for performance. io_delay= [X86-32,X86-64] I/O delay method 0x80 @@ -928,8 +947,15 @@ and is between 256 and 4096 characters. It is defined in the file kstack=N [X86-32,X86-64] Print N words from the kernel stack in oops dumps. + kgdboc= [HW] kgdb over consoles. + Requires a tty driver that supports console polling. + (only serial suported for now) + Format: <serial_device>[,baud] + l2cr= [PPC] + l3cr= [PPC] + lapic [X86-32,APIC] Enable the local APIC even if BIOS disabled it. @@ -1134,6 +1160,11 @@ and is between 256 and 4096 characters. It is defined in the file or memmap=0x10000$0x18690000 + memtest= [KNL,X86_64] Enable memtest + Format: <integer> + range: 0,4 : pattern number + default : 0 <disable> + meye.*= [HW] Set MotionEye Camera parameters See Documentation/video4linux/meye.txt. @@ -1251,8 +1282,16 @@ and is between 256 and 4096 characters. It is defined in the file noexec [IA-64] noexec [X86-32,X86-64] + On X86-32 available only on PAE configured kernels. noexec=on: enable non-executable mappings (default) - noexec=off: disable nn-executable mappings + noexec=off: disable non-executable mappings + + noexec32 [X86-64] + This affects only 32-bit executables. + noexec32=on: enable non-executable mappings (default) + read doesn't imply executable mappings + noexec32=off: disable non-executable mappings + read implies executable mappings nofxsr [BUGS=X86-32] Disables x86 floating point extended register save and restore. The kernel will only save @@ -1339,6 +1378,10 @@ and is between 256 and 4096 characters. It is defined in the file nowb [ARM] + nptcg= [IA64] Override max number of concurrent global TLB + purges which is reported from either PAL_VM_SUMMARY or + SAL PALO. + numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA. one of ['zone', 'node', 'default'] can be specified This can be set from sysctl after boot. @@ -1428,10 +1471,6 @@ and is between 256 and 4096 characters. It is defined in the file nomsi [MSI] If the PCI_MSI kernel config parameter is enabled, this kernel boot option can be used to disable the use of MSI interrupts system-wide. - nosort [X86-32] Don't sort PCI devices according to - order given by the PCI BIOS. This sorting is - done to get a device order compatible with - older kernels. biosirq [X86-32] Use PCI BIOS calls to get the interrupt routing table. These calls are known to be buggy on several machines and they hang the machine |