Re: [PATCH] x86_64: Make NR_IRQS configurable in Kconfig

[Martin Schwidefsky]

On Thu, 2006-08-10 at 15:40 +0100, Andy Whitcroft wrote:
> Well you could do something more fun with the top of the address.  You
> don't need to keep the bytes in the same order for instance.  If this
> is really a fair size chunk at the bottom and one at the top then
> taking the address and swapping the bytes like:
> 
>         ABCDEFGH => BCDAEFGH
> 
> Would be a pretty trivial bit of register wibbling (ie very quick),
> but would probabally mean a single flat, smaller sparsemem table would
> cover all likely areas. 

Not if you don't know where the objects will be mapped..

-- 
blue skies,
  Martin.

Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH

"Reality continues to ruin my life." - Calvin.


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