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-rw-r--r--Documentation/kernel-parameters.txt32
1 files changed, 30 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index f4a04c0c7edc..c357a31411cd 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -626,6 +626,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
626 disable= [IPV6] 626 disable= [IPV6]
627 See Documentation/networking/ipv6.txt. 627 See Documentation/networking/ipv6.txt.
628 628
629 disable_ddw [PPC/PSERIES]
630 Disable Dynamic DMA Window support. Use this if
631 to workaround buggy firmware.
632
629 disable_ipv6= [IPV6] 633 disable_ipv6= [IPV6]
630 See Documentation/networking/ipv6.txt. 634 See Documentation/networking/ipv6.txt.
631 635
@@ -868,6 +872,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
868 If specified, z/VM IUCV HVC accepts connections 872 If specified, z/VM IUCV HVC accepts connections
869 from listed z/VM user IDs only. 873 from listed z/VM user IDs only.
870 874
875 keep_bootcon [KNL]
876 Do not unregister boot console at start. This is only
877 useful for debugging when something happens in the window
878 between unregistering the boot console and initializing
879 the real console.
880
871 i2c_bus= [HW] Override the default board specific I2C bus speed 881 i2c_bus= [HW] Override the default board specific I2C bus speed
872 or register an additional I2C bus that is not 882 or register an additional I2C bus that is not
873 registered from board initialization code. 883 registered from board initialization code.
@@ -1580,16 +1590,25 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
1580 of returning the full 64-bit number. 1590 of returning the full 64-bit number.
1581 The default is to return 64-bit inode numbers. 1591 The default is to return 64-bit inode numbers.
1582 1592
1593 nfs.nfs4_disable_idmapping=
1594 [NFSv4] When set, this option disables the NFSv4
1595 idmapper on the client, but only if the mount
1596 is using the 'sec=sys' security flavour. This may
1597 make migration from legacy NFSv2/v3 systems easier
1598 provided that the server has the appropriate support.
1599 The default is to always enable NFSv4 idmapping.
1600
1583 nmi_debug= [KNL,AVR32,SH] Specify one or more actions to take 1601 nmi_debug= [KNL,AVR32,SH] Specify one or more actions to take
1584 when a NMI is triggered. 1602 when a NMI is triggered.
1585 Format: [state][,regs][,debounce][,die] 1603 Format: [state][,regs][,debounce][,die]
1586 1604
1587 nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels 1605 nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels
1588 Format: [panic,][num] 1606 Format: [panic,][nopanic,][num]
1589 Valid num: 0 1607 Valid num: 0
1590 0 - turn nmi_watchdog off 1608 0 - turn nmi_watchdog off
1591 When panic is specified, panic when an NMI watchdog 1609 When panic is specified, panic when an NMI watchdog
1592 timeout occurs. 1610 timeout occurs (or 'nopanic' to override the opposite
1611 default).
1593 This is useful when you use a panic=... timeout and 1612 This is useful when you use a panic=... timeout and
1594 need the box quickly up again. 1613 need the box quickly up again.
1595 1614
@@ -1813,6 +1832,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
1813 perfmon on Intel CPUs instead of the 1832 perfmon on Intel CPUs instead of the
1814 CPU specific event set. 1833 CPU specific event set.
1815 1834
1835 oops=panic Always panic on oopses. Default is to just kill the process,
1836 but there is a small probability of deadlocking the machine.
1837 This will also cause panics on machine check exceptions.
1838 Useful together with panic=30 to trigger a reboot.
1839
1816 OSS [HW,OSS] 1840 OSS [HW,OSS]
1817 See Documentation/sound/oss/oss-parameters.txt 1841 See Documentation/sound/oss/oss-parameters.txt
1818 1842
@@ -2444,6 +2468,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
2444 <deci-seconds>: poll all this frequency 2468 <deci-seconds>: poll all this frequency
2445 0: no polling (default) 2469 0: no polling (default)
2446 2470
2471 threadirqs [KNL]
2472 Force threading of all interrupt handlers except those
2473 marked explicitely IRQF_NO_THREAD.
2474
2447 topology= [S390] 2475 topology= [S390]
2448 Format: {off | on} 2476 Format: {off | on}
2449 Specify if the kernel should make use of the cpu 2477 Specify if the kernel should make use of the cpu