diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r-- | Documentation/kernel-parameters.txt | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index f1e970acad4c..b3a5aad7e629 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt | |||
@@ -271,6 +271,17 @@ and is between 256 and 4096 characters. It is defined in the file | |||
271 | aic79xx= [HW,SCSI] | 271 | aic79xx= [HW,SCSI] |
272 | See Documentation/scsi/aic79xx.txt. | 272 | See Documentation/scsi/aic79xx.txt. |
273 | 273 | ||
274 | amd_iommu= [HW,X86-84] | ||
275 | Pass parameters to the AMD IOMMU driver in the system. | ||
276 | Possible values are: | ||
277 | isolate - enable device isolation (each device, as far | ||
278 | as possible, will get its own protection | ||
279 | domain) | ||
280 | amd_iommu_size= [HW,X86-64] | ||
281 | Define the size of the aperture for the AMD IOMMU | ||
282 | driver. Possible values are: | ||
283 | '32M', '64M' (default), '128M', '256M', '512M', '1G' | ||
284 | |||
274 | amijoy.map= [HW,JOY] Amiga joystick support | 285 | amijoy.map= [HW,JOY] Amiga joystick support |
275 | Map of devices attached to JOY0DAT and JOY1DAT | 286 | Map of devices attached to JOY0DAT and JOY1DAT |
276 | Format: <a>,<b> | 287 | Format: <a>,<b> |
@@ -295,7 +306,7 @@ and is between 256 and 4096 characters. It is defined in the file | |||
295 | when initialising the APIC and IO-APIC components. | 306 | when initialising the APIC and IO-APIC components. |
296 | 307 | ||
297 | apm= [APM] Advanced Power Management | 308 | apm= [APM] Advanced Power Management |
298 | See header of arch/i386/kernel/apm.c. | 309 | See header of arch/x86/kernel/apm_32.c. |
299 | 310 | ||
300 | arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards | 311 | arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards |
301 | Format: <io>,<irq>,<nodeID> | 312 | Format: <io>,<irq>,<nodeID> |
@@ -599,6 +610,29 @@ and is between 256 and 4096 characters. It is defined in the file | |||
599 | See drivers/char/README.epca and | 610 | See drivers/char/README.epca and |
600 | Documentation/digiepca.txt. | 611 | Documentation/digiepca.txt. |
601 | 612 | ||
613 | disable_mtrr_cleanup [X86] | ||
614 | enable_mtrr_cleanup [X86] | ||
615 | The kernel tries to adjust MTRR layout from continuous | ||
616 | to discrete, to make X server driver able to add WB | ||
617 | entry later. This parameter enables/disables that. | ||
618 | |||
619 | mtrr_chunk_size=nn[KMG] [X86] | ||
620 | used for mtrr cleanup. It is largest continous chunk | ||
621 | that could hold holes aka. UC entries. | ||
622 | |||
623 | mtrr_gran_size=nn[KMG] [X86] | ||
624 | Used for mtrr cleanup. It is granularity of mtrr block. | ||
625 | Default is 1. | ||
626 | Large value could prevent small alignment from | ||
627 | using up MTRRs. | ||
628 | |||
629 | mtrr_spare_reg_nr=n [X86] | ||
630 | Format: <integer> | ||
631 | Range: 0,7 : spare reg number | ||
632 | Default : 1 | ||
633 | Used for mtrr cleanup. It is spare mtrr entries number. | ||
634 | Set to 2 or more if your graphical card needs more. | ||
635 | |||
602 | disable_mtrr_trim [X86, Intel and AMD only] | 636 | disable_mtrr_trim [X86, Intel and AMD only] |
603 | By default the kernel will trim any uncacheable | 637 | By default the kernel will trim any uncacheable |
604 | memory out of your available memory pool based on | 638 | memory out of your available memory pool based on |
@@ -638,7 +672,7 @@ and is between 256 and 4096 characters. It is defined in the file | |||
638 | 672 | ||
639 | elanfreq= [X86-32] | 673 | elanfreq= [X86-32] |
640 | See comment before function elanfreq_setup() in | 674 | See comment before function elanfreq_setup() in |
641 | arch/i386/kernel/cpu/cpufreq/elanfreq.c. | 675 | arch/x86/kernel/cpu/cpufreq/elanfreq.c. |
642 | 676 | ||
643 | elevator= [IOSCHED] | 677 | elevator= [IOSCHED] |
644 | Format: {"anticipatory" | "cfq" | "deadline" | "noop"} | 678 | Format: {"anticipatory" | "cfq" | "deadline" | "noop"} |
@@ -1684,6 +1718,10 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1684 | Format: <reboot_mode>[,<reboot_mode2>[,...]] | 1718 | Format: <reboot_mode>[,<reboot_mode2>[,...]] |
1685 | See arch/*/kernel/reboot.c or arch/*/kernel/process.c | 1719 | See arch/*/kernel/reboot.c or arch/*/kernel/process.c |
1686 | 1720 | ||
1721 | relax_domain_level= | ||
1722 | [KNL, SMP] Set scheduler's default relax_domain_level. | ||
1723 | See Documentation/cpusets.txt. | ||
1724 | |||
1687 | reserve= [KNL,BUGS] Force the kernel to ignore some iomem area | 1725 | reserve= [KNL,BUGS] Force the kernel to ignore some iomem area |
1688 | 1726 | ||
1689 | reservetop= [X86-32] | 1727 | reservetop= [X86-32] |
@@ -2117,6 +2155,9 @@ and is between 256 and 4096 characters. It is defined in the file | |||
2117 | usbhid.mousepoll= | 2155 | usbhid.mousepoll= |
2118 | [USBHID] The interval which mice are to be polled at. | 2156 | [USBHID] The interval which mice are to be polled at. |
2119 | 2157 | ||
2158 | add_efi_memmap [EFI; x86-32,X86-64] Include EFI memory map in | ||
2159 | kernel's map of available physical RAM. | ||
2160 | |||
2120 | vdso= [X86-32,SH,x86-64] | 2161 | vdso= [X86-32,SH,x86-64] |
2121 | vdso=2: enable compat VDSO (default with COMPAT_VDSO) | 2162 | vdso=2: enable compat VDSO (default with COMPAT_VDSO) |
2122 | vdso=1: enable VDSO (default) | 2163 | vdso=1: enable VDSO (default) |