Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964802AbWIJXDx (ORCPT ); Sun, 10 Sep 2006 19:03:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964803AbWIJXDx (ORCPT ); Sun, 10 Sep 2006 19:03:53 -0400 Received: from gw.goop.org ([64.81.55.164]:24472 "EHLO mail.goop.org") by vger.kernel.org with ESMTP id S964802AbWIJXDx (ORCPT ); Sun, 10 Sep 2006 19:03:53 -0400 Message-ID: <450499D3.5010903@goop.org> Date: Sun, 10 Sep 2006 16:03:47 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 1.5.0.5 (X11/20060907) MIME-Version: 1.0 To: Andrew Morton CC: Ingo Molnar , Andi Kleen , Laurent Riffard , Arjan van de Ven , Kernel development list , Jeremy Fitzhardinge Subject: Re: 2.6.18-rc6-mm1: GPF loop on early boot References: <20060908011317.6cb0495a.akpm@osdl.org> <200609101032.17429.ak@suse.de> <20060910115722.GA15356@elte.hu> <200609101334.34867.ak@suse.de> <20060910132614.GA29423@elte.hu> <20060910093307.a011b16f.akpm@osdl.org> In-Reply-To: <20060910093307.a011b16f.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1062 Lines: 26 Andrew Morton wrote: > I must say that having an unreliable early-current is going to be quite a > pita for evermore. Things like mcount-based tricks and > basic-block-profiling-based tricks, for example. > > Is it really going to be too messy to fake up some statically-defined gdt > which points at init_task, install that before we call any C at all? That's on my TODO list - make %gs set correctly before hitting C code, and get rid of all the early_* stuff. I had already encountered a PDA-related oops with lockdep enabled, and addressed it. It's pretty easy to solve in general for the boot CPU, but its a bit more tricky to handle for secondary CPUs. Laurent, could you resend your original oops? It doesn't seem to have appeared on lkml. In the meantime, I'll work on a proper fix for this. J - 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/