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

[Andi Kleen]

On Fri, May 20, 2005 at 03:16:22PM -0700, Ashok Raj wrote:
> Andi: You had mentioned that you would not prefer to replace the broadcast IPI
>       with the mask version for performance. Currently this seems to be the
> 	  most optimal way without putting a sledge hammer on the cpu_up process.

I already put a sledgehammer to __cpu_up with that last
patch. Some more hammering surely wouldnt be a big issue. Unlike i386
we actually still have a chance to test all relevant platforms, so I 
dont think it is a big issue.

What changes did you plan?

P.S.: An alternative would be to define a new genapic subarch that
you only enable when you detect cpuhotplug support at boot.


Again just commenting on the text, not patch sorry.

-Andi
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