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

Martin Schwidefsky
2006-08-10T14:53:53Z

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.