Re: [x86_64] Implementation differences compared to x86_32

From: Eric Lacombe
Date: Mon Oct 13 2008 - 09:28:30 EST


On Monday 13 October 2008 15:03:02 Andi Kleen wrote:
> Eric Lacombe <tuxiko@xxxxxxx> writes:
> > - In x86_32, the physical memory is mapped on kernel land by way of 4 MB
> > pages.
> > But for x86_64, I read that the physical memory was mapped by way of 4 KB
> > pages. Is it true ? and in this case, why this choice ?
>
> It's normally not true (except in some special circumstances)

What are these particular circumstances ?

Eric

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