From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752334AbZH1TNB (ORCPT ); Fri, 28 Aug 2009 15:13:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752055AbZH1TNA (ORCPT ); Fri, 28 Aug 2009 15:13:00 -0400 Received: from turing-police.cc.vt.edu ([128.173.14.107]:59079 "EHLO turing-police.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751864AbZH1TNA (ORCPT ); Fri, 28 Aug 2009 15:13:00 -0400 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: joe Shmoe Cc: Roland Dreier , linux-kernel@vger.kernel.org Subject: Re: kernel page table mapping for >1GB <3 GB for x86 arch without PAE In-Reply-To: Your message of "Fri, 28 Aug 2009 11:40:56 PDT." <812804.57438.qm@web45209.mail.sp1.yahoo.com> From: Valdis.Kletnieks@vt.edu References: <812804.57438.qm@web45209.mail.sp1.yahoo.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1251486780_3654P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Fri, 28 Aug 2009 15:13:00 -0400 Message-ID: <24089.1251486780@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --==_Exmh_1251486780_3654P Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable On Fri, 28 Aug 2009 11:40:56 PDT, joe Shmoe said: > For the sake of discussion, let us say I have 3.5 GB of RAM of x86 with= PAE > disabled and I have only one process running other than kernel. Oh, so an embedded environment. Sure, you could play games with that. But most Linux systems have more processes running than just 'init'. And in that case, what do you do with your memory map? It gets a bit more complicated then.... --==_Exmh_1251486780_3654P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFKmCw8cC3lWbTT17ARAvCCAJ9PwAcP3pYSDeBWyKPBUR1UTNGSxwCg1/vc hv8eYV3IVYkzFQ5gPI8Wz9Q= =N7/y -----END PGP SIGNATURE----- --==_Exmh_1251486780_3654P--