On 5 Jul 2001, Oleg Polianski wrote:
> "Jared D. McNeill" <jmcneill@invisible.yi.org> writes:
>
> > Trying to squeeze every last drop of performance out of my hardware, I
> > tried using memconfig on 1.5W:
> >
> > # memconfig set -b 0xce000000 -l 0xf00000 -o nv write-combine
> > memconfig: can't set range: Invalid argument
>
>  You need kernel level support for MTRR.

The XFree86 aperture driver is installed:

  XFree86 aperture driver version 2.0
  K6-family MTRR support enabled (2 registers)

Jared