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Re: Latest sources from CVS.

To: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>
Subject: Re: Latest sources from CVS.
From: Ralf Baechle <ralf@linux-mips.org>
Date: Fri, 6 Dec 2002 19:04:01 +0100
Cc: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>, Carsten Langgaard <carstenl@mips.com>, "Kevin D. Kissell" <kevink@mips.com>, linux-mips@linux-mips.org
In-reply-to: <20021206172438.GJ23743@rembrandt.csv.ica.uni-stuttgart.de>; from ica2_ts@csv.ica.uni-stuttgart.de on Fri, Dec 06, 2002 at 06:24:38PM +0100
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20021206164558.GH23743@rembrandt.csv.ica.uni-stuttgart.de> <Pine.GSO.3.96.1021206175502.26674R-100000@delta.ds2.pg.gda.pl> <20021206172438.GJ23743@rembrandt.csv.ica.uni-stuttgart.de>
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On Fri, Dec 06, 2002 at 06:24:38PM +0100, Thiemo Seufer wrote:

> Maybe I wasn't clear about it, I meant kernels with 32 bit address
> space but 64 bit register width, allowing for userland N32 ABI.
> 
> E.g. the old DECstations with R4k CPU and limited memory would fit
> in this scheme. :-)

I'm considering kernels with just 2-level page tables as a step into that
direction.  With 16kB pages that permits for 64GB of virtual address
space, with 4kB pages; with a bit of tweaking we should be able to
maintain the ability to map 2GB in the userspace.

  Ralf

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