[olug] Advice on a new rig

[Luke Dashjr]

On Tuesday 25 November 2008 07:55:29 pm Obi-Wan wrote:
> >> I run 4GB of DDR2 with a 32-bit kernel, and I've never had any problems.
> >> Going beyond 4GB (not 3GB) requires 64-bit or hugemem kernel support.
> >
> > Actually, anything beyond 1 GB requires HIGHMEM on x86_32 Linux. However,
> > the OS-independent x86_32 limit is 3 GB, since PCI has a 1 GB mapping
> > reserved.
>
> According to RedHat, that's simply not true.  On 32-bit RHEL installs,
> the himem kernel isn't required until you pass 4GB RAM.  BTDT.

Well, I don't run RedHat. And Gentoo's kernel patchset is very small, 
generally not affecting these things.