From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 06 Dec 2002 19:06:07 +0100 (MET) Received: from onda.linux-mips.net ([IPv6:::ffff:192.168.169.2]:684 "EHLO dea.linux-mips.net") by ralf.linux-mips.org with ESMTP id ; Fri, 6 Dec 2002 19:05:57 +0100 Received: (from ralf@localhost) by dea.linux-mips.net (8.11.6/8.11.6) id gB6I41l08600; Fri, 6 Dec 2002 19:04:01 +0100 Date: Fri, 6 Dec 2002 19:04:01 +0100 From: Ralf Baechle To: Thiemo Seufer Cc: "Maciej W. Rozycki" , Carsten Langgaard , "Kevin D. Kissell" , linux-mips@linux-mips.org Subject: Re: Latest sources from CVS. Message-ID: <20021206190401.A7806@linux-mips.org> References: <20021206164558.GH23743@rembrandt.csv.ica.uni-stuttgart.de> <20021206172438.GJ23743@rembrandt.csv.ica.uni-stuttgart.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i 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 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 811 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips 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