From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751328AbWARFuS (ORCPT ); Wed, 18 Jan 2006 00:50:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751340AbWARFuR (ORCPT ); Wed, 18 Jan 2006 00:50:17 -0500 Received: from note.orchestra.cse.unsw.EDU.AU ([129.94.242.24]:40839 "EHLO note.orchestra.cse.unsw.EDU.AU") by vger.kernel.org with ESMTP id S1751328AbWARFuQ (ORCPT ); Wed, 18 Jan 2006 00:50:16 -0500 From: Ian Wienand To: Paul Mundt , John Richard Moser , "linux-os (Dick Johnson)" , linux-kernel@vger.kernel.org Date: Wed, 18 Jan 2006 16:50:03 +1100 Cc: Paul Cameron Davies Subject: Re: Huge pages and small pages. . . Message-ID: <20060118055003.GD11721@cse.unsw.EDU.AU> References: <43CD3CE4.3090300@comcast.net> <43CD481A.6040606@comcast.net> <20060117231802.GA14314@linux-sh.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9dgjiU4MmWPVapMU" Content-Disposition: inline In-Reply-To: <20060117231802.GA14314@linux-sh.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --9dgjiU4MmWPVapMU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jan 18, 2006 at 01:18:02AM +0200, Paul Mundt wrote: > Transparent superpages would certainly be nice. There's already various > superpage implementations floating around, but not without their > drawbacks. You might consider the Shimizu superpage patch for x86 if > you're not too concerned about demotion when trying to swap out the page. > > There's some links on this subject on the ia64 wiki: > > http://www.gelato.unsw.edu.au/IA64wiki/SuperPages Hi, I'm working on superpages, targeted at Itanium, and I just updated the WiKi page to explain a bit more where I'm at. http://www.gelato.unsw.edu.au/IA64wiki/Ia64SuperPages We're also looking at other things, like completely abstracting out the 3 level page table to allow us to experiment with VM schemes more appropriate for large, sparse address spaces and superpages. This is far from realistic migrate into the kernel stuff (so not really for here), but if sufficient (say 5 or 10) people drop me a reply email to say they're interested I can start a low-traffic list where we can discuss long term (far-fetched?) VM implementation ideas, share patches, etc. > Since this topic seems to come up rather frequently, perhaps it would be > worthwhile documenting some of this on the linux-mm wiki. Yes, I'll look at putting something in there too. -i ianw@gelato.unsw.edu.au http://www.gelato.unsw.edu.au --9dgjiU4MmWPVapMU Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFDzdcLWDlSU/gp6ecRAixHAKCTuRrWrN4cn5UhoIdK4wKoKh+IfgCfX1xM D1WOw4gFSuOrCwqKE65Mh4c= =czkf -----END PGP SIGNATURE----- --9dgjiU4MmWPVapMU--