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| author | Len Brown <len.brown@intel.com> | 2007-08-25 04:19:05 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-08-25 04:19:05 +0200 |
| commit | 5a16eff86dc1194a17c69250492e820d828e3bde (patch) | |
| tree | a0f990ce8682d7108f6fbd7f9d3c90a8d318d9b8 /Documentation | |
| parent | Pull battery into release branch (diff) | |
| parent | ACPI: boot correctly with "nosmp" or "maxcpus=0" (diff) | |
| download | linux-5a16eff86dc1194a17c69250492e820d828e3bde.tar.xz linux-5a16eff86dc1194a17c69250492e820d828e3bde.zip | |
Pull bugzilla-1641 into release branch
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 975f029be25c..17770b456310 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -952,14 +952,10 @@ and is between 256 and 4096 characters. It is defined in the file Format: <1-256> maxcpus= [SMP] Maximum number of processors that an SMP kernel - should make use of. - Using "nosmp" or "maxcpus=0" will disable SMP - entirely (the MPS table probe still happens, though). - A command-line option of "maxcpus=<NUM>", where <NUM> - is an integer greater than 0, limits the maximum number - of CPUs activated in SMP mode to <NUM>. - Using "maxcpus=1" on an SMP kernel is the trivial - case of an SMP kernel with only one CPU. + should make use of. maxcpus=n : n >= 0 limits the + kernel to using 'n' processors. n=0 is a special case, + it is equivalent to "nosmp", which also disables + the IO APIC. max_addr=[KMG] [KNL,BOOT,ia64] All physical memory greater than or equal to this physical address is ignored. @@ -1184,7 +1180,8 @@ and is between 256 and 4096 characters. It is defined in the file nosep [BUGS=X86-32] Disables x86 SYSENTER/SYSEXIT support. - nosmp [SMP] Tells an SMP kernel to act as a UP kernel. + nosmp [SMP] Tells an SMP kernel to act as a UP kernel, + and disable the IO APIC. legacy for "maxcpus=0". nosoftlockup [KNL] Disable the soft-lockup detector. |