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Re: Latest sources from CVS.

To: Thiemo Seufer <>
Subject: Re: Latest sources from CVS.
From: Ralf Baechle <>
Date: Fri, 6 Dec 2002 19:04:01 +0100
Cc: "Maciej W. Rozycki" <>, Carsten Langgaard <>, "Kevin D. Kissell" <>,
In-reply-to: <>; from on Fri, Dec 06, 2002 at 06:24:38PM +0100
Original-recipient: rfc822;
References: <> <> <>
User-agent: Mutt/
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.


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