Re: 10 GB in Opteron machine

[Christoph Pleger]

Hello,

On Fri, 22 Jul 2005 05:05:40 -0400
Jeff Garzik <jgarzik@xxxxxxxxx> wrote:

> Christoph Pleger wrote:
> > At last I found out that setting HIGHMEM support to 64 GB is the
> > problem. But is it really not possible to use more than 4GB on an
> > Opteron machine?
> 
> Build and boot a 64-bit kernel, not a 32-bit kernel.
> 
> There is no highmem option for the 64-bit kernel, because it doesn't 
> need one.

I have two questions:

1. Is it possible to compile a 64-bit kernel on a 32-bit machine (or at
least on a 64-bit machine with 32-bit software) and if yes, how can I do
that?
2. All other software on the machine is 32-bit software. Will that
software work with a 64-bit kernel?

Christoph
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