Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756146AbYHUKH1 (ORCPT ); Thu, 21 Aug 2008 06:07:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753144AbYHUKHO (ORCPT ); Thu, 21 Aug 2008 06:07:14 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:43128 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752614AbYHUKHN (ORCPT ); Thu, 21 Aug 2008 06:07:13 -0400 Subject: Re: [ANNOUNCE] mdb: Merkey's Linux Kernel Debugger 2.6.27-rc4 released From: Peter Zijlstra To: jmerkey@wolfmountaingroup.com Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Nick Piggin , Paul E McKenney , David Howells In-Reply-To: <200808210250.m7L2obNX028353@wolfmountaingroup.com> References: <200808210250.m7L2obNX028353@wolfmountaingroup.com> Content-Type: text/plain Date: Thu, 21 Aug 2008 12:07:11 +0200 Message-Id: <1219313231.8651.101.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 745 Lines: 19 On Wed, 2008-08-20 at 20:50 -0600, jmerkey@wolfmountaingroup.com wrote: > volatiles left in the code due to the previously stated > (and still present) severe breakage of the GNU compiler with SMP > shared data. most of the barrier() functions are just plain broken > and do not result in proper compiler behavior in this tree. Can you provide explicit detail? By using barrier() the compiler should clobber all its memory and registers therefore forcing a write/reload of the variable. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/