From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261229AbVBFNqs (ORCPT ); Sun, 6 Feb 2005 08:46:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261244AbVBFNqs (ORCPT ); Sun, 6 Feb 2005 08:46:48 -0500 Received: from ns.suse.de ([195.135.220.2]:50618 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S261229AbVBFNql (ORCPT ); Sun, 6 Feb 2005 08:46:41 -0500 Date: Sun, 6 Feb 2005 14:46:40 +0100 From: Andi Kleen To: Ingo Molnar Cc: Andi Kleen , Christoph Hellwig , Arjan van de Ven , akpm@osdl.org, torvalds@osdl.org, linux-kernel@vger.kernel.org, drepper@redhat.com Subject: Re: [PROPOSAL/PATCH] Remove PT_GNU_STACK support before 2.6.11 Message-ID: <20050206134640.GB30476@wotan.suse.de> References: <20050206113635.GA30109@wotan.suse.de> <20050206114758.GA8437@infradead.org> <20050206120244.GA28061@elte.hu> <20050206124523.GA762@elte.hu> <20050206125002.GF30109@wotan.suse.de> <1107694800.22680.90.camel@laptopd505.fenrus.org> <20050206130152.GH30109@wotan.suse.de> <20050206130650.GA32015@infradead.org> <20050206131130.GJ30109@wotan.suse.de> <20050206133239.GA4483@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050206133239.GA4483@elte.hu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > fortunately there's this 'NX-emulation' thing called exec-shield which > is part of Fedora (and has been part of it for almost 2 years) and did > all the testing for you on all x86 hardware, on thousands of packages > and on over a ten thousand binaries, well in advance of this going > upstream. It wasnt a bump-free ride, but it was worth it. But apparently a completely different patch was tested with quite different semantics. > > (the Mono bug was found this way, the Grub one wasnt, due to it being But not fixed in mainline mono. And also as far as I can figure out there was no effort to warn user land people about this intrusive change, and tell them what they need to do when they recompile. > RWE. But if it triggers it shows up immediately so it's not like you > have no sign that something wrong is going on. Only grub-install > triggers it and no boot/install kernel i know of defaults to > PAE-enabled, that's what caused grub-install being used in an NX > scenario so infrequently.) > > anyway, this particular flamewar might have made more sense last Summer. Last summer nobody did change the 32bit ABI on x86-64. I only started it because the bug reports are appearing now and it's clear now that we have a problem. -Andi