Re: using more than 2 GB as a ram disk
Neil Conway (nconway.list@ukaea.org.uk)
Tue, 2 Feb 1999 10:00:10 +0000
H. Peter Anvin wrote:
>
> > H. Peter Anvin wrote:
> > > Call it ridiculous. i386 et al only has 32 bits of linear address
> > > space. It can't work.
> >
> > That's a little misleading, and it has been discussed here ad nauseam.
> >
> > The later i386 chips have PSE (== 36 bits of address space using
> > segmentation). It's not pretty but it could be done. The fact that we
> > think it isn't worth the trouble is not the issue here.
> >
>
> No, segmentation doesn't help you for PAE (not PSE). You need to trap
> and switch page tables.
OK, so *that's* how you do it (oops on the name). But you said it
"can't work" - I can't reconcile that with the facts. Perhaps you
didn't quite mean "can't work" ??
cheers
Neil
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