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Re: problem : quantity of memory available

On Thursday 28 October 2004 18:46, Lennart Sorensen wrote:
> On Thu, Oct 28, 2004 at 12:53:20PM -0400, Levi Bard wrote:
> > Highmem (>4GB) may not be enabled in that kernel?  Can you search for
> > it in the config?  (/proc/kconfig ?)
> HIGHMEM on a 64bit system?  I know the amd64 is x86 based, but still,
> does it need that?

Amd64 can access all memory directly, so doesn't have or need highmem[1].
The highmem/lowmem distinction only applies to 32-bit kernels.


[1] em64t cpus don't have an IOMMU, so have to bounce all IO through buffers 
in th first 4G of memory, but that's something different.

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