Re: using more than 2 GB as a ram disk
H. Peter Anvin (hpa@transmeta.com)
Tue, 2 Feb 1999 01:46:07 -0800 (PST)
> 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.
-hpa
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