Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262325AbUDKLsc (ORCPT ); Sun, 11 Apr 2004 07:48:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262328AbUDKLsc (ORCPT ); Sun, 11 Apr 2004 07:48:32 -0400 Received: from 81-5-136-19.dsl.eclipse.net.uk ([81.5.136.19]:49035 "EHLO vlad.carfax.org.uk") by vger.kernel.org with ESMTP id S262325AbUDKLsa (ORCPT ); Sun, 11 Apr 2004 07:48:30 -0400 Date: Sun, 11 Apr 2004 12:45:57 +0100 From: Hugo Mills To: Paul Wagland Cc: Hugo Mills , "J. Ryan Earl" , linux-kernel@vger.kernel.org, Andi Kleen Subject: Re: amd64 questions Message-ID: <20040411114557.GB22258@selene> Mail-Followup-To: Hugo Mills , Paul Wagland , "J. Ryan Earl" , linux-kernel@vger.kernel.org, Andi Kleen References: <1Ijzw-4ff-5@gated-at.bofh.it> <1Ijzv-4ff-3@gated-at.bofh.it> <1IntE-7wn-39@gated-at.bofh.it> <407826DF.9030506@clanhk.org> <20040410184904.GA12924@colin2.muc.de> <20040410190230.GD1056@selene> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="LwW0XdcUbUexiWVK" Content-Disposition: inline In-Reply-To: X-GPG-Fingerprint: B997 A9F1 782D D1FD 9F87 5542 B2C2 7BC2 1C33 5860 X-GPG-Key: 1C335860 X-Parrot: It is no more. It has joined the choir invisible. X-IRC-Nicks: hugo darksatanic User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2552 Lines: 65 --LwW0XdcUbUexiWVK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Apr 11, 2004 at 01:37:46PM +0200, Paul Wagland wrote: > > On Apr 10, 2004, at 21:02, Hugo Mills wrote: > > >On Sat, Apr 10, 2004 at 08:49:04PM +0200, Andi Kleen wrote: > >>>line either? Or we can if we use AMD64 [DM] libraries with a AMD64 > >>>kernel? DM = Device Mapper right? > >> > >>You can't use Device Mapper with 32bit user tools on a 64bit kernel > >>right now. > > > > Well, you can, because that's what I'm doing on this machine. Joe > >Thornber posted a patch[1] here a few weeks ago which fixes the > >problem in a "sealing-wax-and-string" kind of way. It Works For > >Me(tm), which is about all you can say about it -- it's not the > >prettiest piece of code, even to my non-kernel eyes. :) > > Ah, yes, but you missed the bit slightly later in the thread where Andi > requested that this not be added to the kernel since it would then > break all currently existing 64bit DM user tools. Newly compiled ones > would, of course, work, but you introduce a DM user tool versioning > problem, where the old 64 bit utils need to be used with old kernels, > and the new tools need to be used with the new kernels. As far as I > understood, this is the "official" line for the mainstream kernel. It > is my hope that the disties all decide to use Thornbers patch when they > do release, but only time will tell... Sorry, I probably wasn't making myself clear. I'm well aware of the issues surrounding this patch, and the fact that it's never going to get into mainline kernels. However, it _does_ allow you to use DM with 32-bit user-space + 64-bit kernel, which was my only point. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 1C335860 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- The English language has the mot juste for every occasion. --- --LwW0XdcUbUexiWVK Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFAeS/1ssJ7whwzWGARAgyxAJ9frJw30FTmA8gDTGj4CYd/+v8epACgsau3 aNajsMWKHtCaFZlkYnrxkKQ= =OO87 -----END PGP SIGNATURE----- --LwW0XdcUbUexiWVK-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/