From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266698AbUGQEh0 (ORCPT ); Sat, 17 Jul 2004 00:37:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266695AbUGQEh0 (ORCPT ); Sat, 17 Jul 2004 00:37:26 -0400 Received: from palrel12.hp.com ([156.153.255.237]:55956 "EHLO palrel12.hp.com") by vger.kernel.org with ESMTP id S266670AbUGQEhX (ORCPT ); Sat, 17 Jul 2004 00:37:23 -0400 From: David Mosberger MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16632.44288.370612.885408@napali.hpl.hp.com> Date: Fri, 16 Jul 2004 21:37:20 -0700 To: Linus Torvalds Cc: davidm@hpl.hp.com, Mark Haverkamp , Ingo Molnar , Jakub Jelinek , suresh.b.siddha@intel.com, jun.nakajima@intel.com, Andrew Morton , linux-ia64@vger.kernel.org, linux-kernel Subject: Re: serious performance regression due to NX patch In-Reply-To: References: <200407100528.i6A5SF8h020094@napali.hpl.hp.com> <20040711123803.GD21264@devserv.devel.redhat.com> <16626.62318.880165.774044@napali.hpl.hp.com> <1089734729.1356.79.camel@markh1.pdx.osdl.net> <16632.28018.130890.290832@napali.hpl.hp.com> X-Mailer: VM 7.18 under Emacs 21.3.1 Reply-To: davidm@hpl.hp.com X-URL: http://www.hpl.hp.com/personal/David_Mosberger/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> On Fri, 16 Jul 2004 18:39:40 -0700 (PDT), Linus Torvalds said: Linus> No. Using "def_flags" was a mistake for the whole VM_EXEC Linus> thing. It's not designed for that, and it doesn't work that Linus> way. I applied the paper-over fix that gets it Linus> almost-working, but I'm waiting for Ingo to rewrite it by Linus> just saving the "executable_stack" information at exec time, Linus> and not playing with def_flags at all. I'm very happy to hear that. Thanks, --david