From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261457AbVCRDnd (ORCPT ); Thu, 17 Mar 2005 22:43:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261463AbVCRDnc (ORCPT ); Thu, 17 Mar 2005 22:43:32 -0500 Received: from smtp3.adl2.internode.on.net ([203.16.214.203]:51212 "EHLO smtp3.adl2.internode.on.net") by vger.kernel.org with ESMTP id S261457AbVCRDmu (ORCPT ); Thu, 17 Mar 2005 22:42:50 -0500 From: Michael Ellerman Reply-To: michael@ellerman.id.au Organization: IBM LTC To: linuxppc64-dev@ozlabs.org Subject: Re: Why no bigphysarea in mainline? Date: Fri, 18 Mar 2005 14:42:48 +1100 User-Agent: KMail/1.7.2 Cc: Linux Kernel Mailing List References: <200503172057.06570.michael@ellerman.id.au> <1111070132.19021.31.camel@localhost> In-Reply-To: <1111070132.19021.31.camel@localhost> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1640885.zgvatvuQzy"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200503181442.51830.michael@ellerman.id.au> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1640885.zgvatvuQzy Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Fri, 18 Mar 2005 01:35, Dave Hansen wrote: > Doing mem=3D for drivers isn't just a hack, it's *WRONG*. It's a ticking > time bomb that magically happens to work on some systems. It will not > work consistently on a discontiguous memory system, or a memory hotplug > system. I couldn't agree more. Problem is I've been asked to change the way mem=3DX= =20 works on PPC64 so that this hack will work, which is a horrible thought. > Could you give some examples of drivers which are in the kernel that > could benefit from this patch? We don't tend to put things like this > in, unless they have actual users. We don't tend to change code for > out-of-tree users, either. No I can't. I've been approached by several "vendors" asking about using me= m=3DX=20 hacks on PPC64, however I doubt any of them have code in-tree. I'll check=20 though. cheers --nextPart1640885.zgvatvuQzy Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQBCOk47dSjSd0sB4dIRAilNAJ9U6DP0kKOn0TtjgZGETOmBhH9FngCfUtSP JXWE7LKWyfinz8WMOqF8Q6w= =cNrA -----END PGP SIGNATURE----- --nextPart1640885.zgvatvuQzy--