doc: make doc. for maxcpus= more visible
Some people are confused about maxcpus=1 and maxcpus=0, so put the documentation text from init/main.c into Documentation/kernel-parameters.txt also. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Adrian Bunk <bunk@stusta.de>
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@ -863,7 +863,14 @@ and is between 256 and 4096 characters. It is defined in the file
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Format: <1-256>
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Format: <1-256>
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maxcpus= [SMP] Maximum number of processors that an SMP kernel
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maxcpus= [SMP] Maximum number of processors that an SMP kernel
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should make use of
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should make use of.
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Using "nosmp" or "maxcpus=0" will disable SMP
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entirely (the MPS table probe still happens, though).
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A command-line option of "maxcpus=<NUM>", where <NUM>
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is an integer greater than 0, limits the maximum number
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of CPUs activated in SMP mode to <NUM>.
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Using "maxcpus=1" on an SMP kernel is the trivial
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case of an SMP kernel with only one CPU.
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max_addr=[KMG] [KNL,BOOT,ia64] All physical memory greater than or
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max_addr=[KMG] [KNL,BOOT,ia64] All physical memory greater than or
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equal to this physical address is ignored.
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equal to this physical address is ignored.
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