Re: [discuss] Re: [patch 0/4] CPU hot-plug support for x86_64

[Andi Kleen]

> > sending to only relevant cpus removes that ambiquity. 
> 
> Or grab the 'call_lock' before setting the upcoming cpu in the online_map.
> This should also avoid the race when a CPU is coming online.

Such a simple solution would be great.

-Andi
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