Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964991AbWJBU0T (ORCPT ); Mon, 2 Oct 2006 16:26:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964990AbWJBU0T (ORCPT ); Mon, 2 Oct 2006 16:26:19 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:64424 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S964981AbWJBU0S (ORCPT ); Mon, 2 Oct 2006 16:26:18 -0400 Date: Mon, 2 Oct 2006 22:18:36 +0200 From: Ingo Molnar To: Andrew Morton Cc: David Howells , Thomas Gleixner , torvalds@osdl.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Dmitry Torokhov , Greg KH , David Brownell , Alan Stern Subject: Re: [PATCH 3/3] IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Message-ID: <20061002201836.GB31365@elte.hu> References: <20061002162049.17763.39576.stgit@warthog.cambridge.redhat.com> <20061002162053.17763.26032.stgit@warthog.cambridge.redhat.com> <20061002132116.2663d7a3.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061002132116.2663d7a3.akpm@osdl.org> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -2.8 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.8 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_50 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 0.5 BAYES_50 BODY: Bayesian spam probability is 40 to 60% [score: 0.5000] -0.0 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1065 Lines: 26 * Andrew Morton wrote: > I think the change is good. But I don't want to maintain this whopper > out-of-tree for two months! If we want to do this, we should just > smash it in and grit our teeth. But I am a bit concerned about the > non-x86 architectures. I assume they'll continue to compile-and-work? > > What does Ingo think? i agree that we should do this in one go and in Linus' tree. I suspect David has a script for this, so we can do it anytime for any tree, right? the amount of code that truly relies on regs being present is very low. Mostly only sysrq type of stuff and the timer interrupt is such. Any arch should be able to adopt to that promptly, but i'd favor a switchover that works on 99% of the arches, just to have this pain over instantly (sans small bugs). Ingo - 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/