Re: FW: Linux question

[Bill Davidsen]

Andi Kleen wrote:
> Bill Davidsen <davidsen@xxxxxxx> writes:
>
>   
> > Here's an interesting question, why isn't there an "online" file for
> > each CPU?
> >     
>
> There are still some problems with off lining CPU #0 on x86 at least,
> that is why it is not allowed. iirc they weren't very difficult so it
> would be probably fixable with some effort.
>   

If that's the case I would think that making it read-only would be a 
better solution, since I found this while creating a little tool to scan 
and see what's online and what's not. Obviously there can be exception 
cases for CPU0 and x86, but I would think that having the CPU0 for x86 
be read-only would be a quirk, and handled in the kernel.

--
Bill Davidsen <davidsen@xxxxxxx>
 "Woe unto the statesman who makes war without a reason that will still
 be valid when the war is over..." Otto von Bismark 


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