From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7161 invoked by alias); 30 Dec 2008 08:32:17 -0000 Received: (qmail 7145 invoked by uid 22791); 30 Dec 2008 08:32:17 -0000 X-SWARE-Spam-Status: No, hits=-2.6 required=5.0 tests=BAYES_00 X-Spam-Check-By: sourceware.org Received: from one.firstfloor.org (HELO one.firstfloor.org) (213.235.205.2) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 30 Dec 2008 08:31:37 +0000 Received: from basil.firstfloor.org (p5B3CB281.dip0.t-ipconnect.de [91.60.178.129]) by one.firstfloor.org (Postfix) with ESMTP id 93B771AD0021; Tue, 30 Dec 2008 09:44:52 +0100 (CET) Received: by basil.firstfloor.org (Postfix, from userid 1000) id 6FFBC3E664C; Tue, 30 Dec 2008 09:33:09 +0100 (CET) To: "Brian O'Mahoney" Cc: gcc@gcc.gnu.org, opensuse@opensuse.org, gcc-help@gcc.gnu.org Subject: Re: gcc and the kernel From: Andi Kleen References: <200812291522.31842.omb@bluewin.ch> Date: Tue, 30 Dec 2008 09:57:00 -0000 In-Reply-To: <200812291522.31842.omb@bluewin.ch> (Brian O'Mahoney's message of "Mon, 29 Dec 2008 15:22:31 -0500") Message-ID: <87ocyuukoq.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-help-owner@gcc.gnu.org X-SW-Source: 2008-12/txt/msg00299.txt.bz2 "Brian O'Mahoney" writes: > > Last, a word to the wise, compiler developers, are by nature fairly agressive > but, unless you want to work on gcc itself, it is wise to stay a bit behind > the bleeding edge, and, unless your systems are excellently backed up, > ___DONT_BUILD_THE_KERNEL___ with and untested gcc. I mean a kernel you are > going to try to run. For an example of why not see the 'ix68 string > direction' fiasco noting that an interrupt can happen anywhere and that the > CPU x flag is a non-deterministic (to the interrupt code) part of the > interrupted context. Oh what fun! This particular problem has nothing to do with the compiler that built the kernel. -Andi -- ak@linux.intel.com