Re: 3.3G RAM limit?

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Wed, Apr 08, 2020 at 10:26:53PM +0200, Martin Husemann wrote:
> On Wed, Apr 08, 2020 at 04:07:29PM -0400, Mouse wrote:
> > I have a fuzzy memory that there's some kind of limit that leads to
> > i386 topping out at three-point-something gigs of RAM.  Could someone
> > remind me of details?
> 
> The BIOS reserves some window below 4G for PCI IO ranges, typically at
> the end of the 4G VA space (size depending on exact BIOS and sometimes
> settings).

...and it can be somewhat worked around with PAE.

Joerg