Re: [PATCH] add command line init_start_cpus

[Yinghai Lu]

On Sun, Dec 14, 2008 at 4:11 PM, Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:
> Yinghai Lu <yinghai@xxxxxxxxxx> writes:
>
>> Impact: new command line
>>
>> so could select cpus to be started during init stage
>
> maxcpus=N should do this already, at least for the first N cpus.
> If you really need a non continuous range of N (why?) then it would
> be better to fix maxcpus instead of adding a new option.

it seems it is hard to make maxcpus= to support random cpus selecting and
maxcpus=0 looks insane

also maxcpus=1, will disable smp, can you enable other cpus later in user space?

YH
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