diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r-- | Documentation/kernel-parameters.txt | 78 |
1 files changed, 71 insertions, 7 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 1150444a21ab..d4f4875fc7c6 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt | |||
@@ -284,6 +284,11 @@ and is between 256 and 4096 characters. It is defined in the file | |||
284 | isolate - enable device isolation (each device, as far | 284 | isolate - enable device isolation (each device, as far |
285 | as possible, will get its own protection | 285 | as possible, will get its own protection |
286 | domain) | 286 | domain) |
287 | fullflush - enable flushing of IO/TLB entries when | ||
288 | they are unmapped. Otherwise they are | ||
289 | flushed before they will be reused, which | ||
290 | is a lot of faster | ||
291 | |||
287 | amd_iommu_size= [HW,X86-64] | 292 | amd_iommu_size= [HW,X86-64] |
288 | Define the size of the aperture for the AMD IOMMU | 293 | Define the size of the aperture for the AMD IOMMU |
289 | driver. Possible values are: | 294 | driver. Possible values are: |
@@ -463,12 +468,6 @@ and is between 256 and 4096 characters. It is defined in the file | |||
463 | Range: 0 - 8192 | 468 | Range: 0 - 8192 |
464 | Default: 64 | 469 | Default: 64 |
465 | 470 | ||
466 | disable_8254_timer | ||
467 | enable_8254_timer | ||
468 | [IA32/X86_64] Disable/Enable interrupt 0 timer routing | ||
469 | over the 8254 in addition to over the IO-APIC. The | ||
470 | kernel tries to set a sensible default. | ||
471 | |||
472 | hpet= [X86-32,HPET] option to control HPET usage | 471 | hpet= [X86-32,HPET] option to control HPET usage |
473 | Format: { enable (default) | disable | force } | 472 | Format: { enable (default) | disable | force } |
474 | disable: disable HPET and use PIT instead | 473 | disable: disable HPET and use PIT instead |
@@ -659,11 +658,12 @@ and is between 256 and 4096 characters. It is defined in the file | |||
659 | earlyprintk= [X86-32,X86-64,SH,BLACKFIN] | 658 | earlyprintk= [X86-32,X86-64,SH,BLACKFIN] |
660 | earlyprintk=vga | 659 | earlyprintk=vga |
661 | earlyprintk=serial[,ttySn[,baudrate]] | 660 | earlyprintk=serial[,ttySn[,baudrate]] |
661 | earlyprintk=dbgp | ||
662 | 662 | ||
663 | Append ",keep" to not disable it when the real console | 663 | Append ",keep" to not disable it when the real console |
664 | takes over. | 664 | takes over. |
665 | 665 | ||
666 | Only vga or serial at a time, not both. | 666 | Only vga or serial or usb debug port at a time. |
667 | 667 | ||
668 | Currently only ttyS0 and ttyS1 are supported. | 668 | Currently only ttyS0 and ttyS1 are supported. |
669 | 669 | ||
@@ -796,6 +796,7 @@ and is between 256 and 4096 characters. It is defined in the file | |||
796 | Defaults to the default architecture's huge page size | 796 | Defaults to the default architecture's huge page size |
797 | if not specified. | 797 | if not specified. |
798 | 798 | ||
799 | i8042.debug [HW] Toggle i8042 debug mode | ||
799 | i8042.direct [HW] Put keyboard port into non-translated mode | 800 | i8042.direct [HW] Put keyboard port into non-translated mode |
800 | i8042.dumbkbd [HW] Pretend that controller can only read data from | 801 | i8042.dumbkbd [HW] Pretend that controller can only read data from |
801 | keyboard and cannot control its state | 802 | keyboard and cannot control its state |
@@ -1020,6 +1021,10 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1020 | (only serial suported for now) | 1021 | (only serial suported for now) |
1021 | Format: <serial_device>[,baud] | 1022 | Format: <serial_device>[,baud] |
1022 | 1023 | ||
1024 | kmac= [MIPS] korina ethernet MAC address. | ||
1025 | Configure the RouterBoard 532 series on-chip | ||
1026 | Ethernet adapter MAC address. | ||
1027 | |||
1023 | l2cr= [PPC] | 1028 | l2cr= [PPC] |
1024 | 1029 | ||
1025 | l3cr= [PPC] | 1030 | l3cr= [PPC] |
@@ -1228,6 +1233,29 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1228 | or | 1233 | or |
1229 | memmap=0x10000$0x18690000 | 1234 | memmap=0x10000$0x18690000 |
1230 | 1235 | ||
1236 | memory_corruption_check=0/1 [X86] | ||
1237 | Some BIOSes seem to corrupt the first 64k of | ||
1238 | memory when doing things like suspend/resume. | ||
1239 | Setting this option will scan the memory | ||
1240 | looking for corruption. Enabling this will | ||
1241 | both detect corruption and prevent the kernel | ||
1242 | from using the memory being corrupted. | ||
1243 | However, its intended as a diagnostic tool; if | ||
1244 | repeatable BIOS-originated corruption always | ||
1245 | affects the same memory, you can use memmap= | ||
1246 | to prevent the kernel from using that memory. | ||
1247 | |||
1248 | memory_corruption_check_size=size [X86] | ||
1249 | By default it checks for corruption in the low | ||
1250 | 64k, making this memory unavailable for normal | ||
1251 | use. Use this parameter to scan for | ||
1252 | corruption in more or less memory. | ||
1253 | |||
1254 | memory_corruption_check_period=seconds [X86] | ||
1255 | By default it checks for corruption every 60 | ||
1256 | seconds. Use this parameter to check at some | ||
1257 | other rate. 0 disables periodic checking. | ||
1258 | |||
1231 | memtest= [KNL,X86] Enable memtest | 1259 | memtest= [KNL,X86] Enable memtest |
1232 | Format: <integer> | 1260 | Format: <integer> |
1233 | range: 0,4 : pattern number | 1261 | range: 0,4 : pattern number |
@@ -1425,6 +1453,12 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1425 | 1453 | ||
1426 | nolapic_timer [X86-32,APIC] Do not use the local APIC timer. | 1454 | nolapic_timer [X86-32,APIC] Do not use the local APIC timer. |
1427 | 1455 | ||
1456 | nox2apic [X86-64,APIC] Do not enable x2APIC mode. | ||
1457 | |||
1458 | x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of | ||
1459 | default x2apic cluster mode on platforms | ||
1460 | supporting x2apic. | ||
1461 | |||
1428 | noltlbs [PPC] Do not use large page/tlb entries for kernel | 1462 | noltlbs [PPC] Do not use large page/tlb entries for kernel |
1429 | lowmem mapping on PPC40x. | 1463 | lowmem mapping on PPC40x. |
1430 | 1464 | ||
@@ -1680,6 +1714,11 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1680 | autoconfiguration. | 1714 | autoconfiguration. |
1681 | Ranges are in pairs (memory base and size). | 1715 | Ranges are in pairs (memory base and size). |
1682 | 1716 | ||
1717 | dynamic_printk | ||
1718 | Enables pr_debug()/dev_dbg() calls if | ||
1719 | CONFIG_DYNAMIC_PRINTK_DEBUG has been enabled. These can also | ||
1720 | be switched on/off via <debugfs>/dynamic_printk/modules | ||
1721 | |||
1683 | print-fatal-signals= | 1722 | print-fatal-signals= |
1684 | [KNL] debug: print fatal signals | 1723 | [KNL] debug: print fatal signals |
1685 | print-fatal-signals=1: print segfault info to | 1724 | print-fatal-signals=1: print segfault info to |
@@ -1882,6 +1921,12 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1882 | shapers= [NET] | 1921 | shapers= [NET] |
1883 | Maximal number of shapers. | 1922 | Maximal number of shapers. |
1884 | 1923 | ||
1924 | show_msr= [x86] show boot-time MSR settings | ||
1925 | Format: { <integer> } | ||
1926 | Show boot-time (BIOS-initialized) MSR settings. | ||
1927 | The parameter means the number of CPUs to show, | ||
1928 | for example 1 means boot CPU only. | ||
1929 | |||
1885 | sim710= [SCSI,HW] | 1930 | sim710= [SCSI,HW] |
1886 | See header of drivers/scsi/sim710.c. | 1931 | See header of drivers/scsi/sim710.c. |
1887 | 1932 | ||
@@ -2208,6 +2253,25 @@ and is between 256 and 4096 characters. It is defined in the file | |||
2208 | autosuspended. Devices for which the delay is set | 2253 | autosuspended. Devices for which the delay is set |
2209 | to a negative value won't be autosuspended at all. | 2254 | to a negative value won't be autosuspended at all. |
2210 | 2255 | ||
2256 | usbcore.usbfs_snoop= | ||
2257 | [USB] Set to log all usbfs traffic (default 0 = off). | ||
2258 | |||
2259 | usbcore.blinkenlights= | ||
2260 | [USB] Set to cycle leds on hubs (default 0 = off). | ||
2261 | |||
2262 | usbcore.old_scheme_first= | ||
2263 | [USB] Start with the old device initialization | ||
2264 | scheme (default 0 = off). | ||
2265 | |||
2266 | usbcore.use_both_schemes= | ||
2267 | [USB] Try the other device initialization scheme | ||
2268 | if the first one fails (default 1 = enabled). | ||
2269 | |||
2270 | usbcore.initial_descriptor_timeout= | ||
2271 | [USB] Specifies timeout for the initial 64-byte | ||
2272 | USB_REQ_GET_DESCRIPTOR request in milliseconds | ||
2273 | (default 5000 = 5.0 seconds). | ||
2274 | |||
2211 | usbhid.mousepoll= | 2275 | usbhid.mousepoll= |
2212 | [USBHID] The interval which mice are to be polled at. | 2276 | [USBHID] The interval which mice are to be polled at. |
2213 | 2277 | ||