From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758575AbYILWKc (ORCPT ); Fri, 12 Sep 2008 18:10:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753633AbYILWKY (ORCPT ); Fri, 12 Sep 2008 18:10:24 -0400 Received: from one.firstfloor.org ([213.235.205.2]:54358 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753496AbYILWKX (ORCPT ); Fri, 12 Sep 2008 18:10:23 -0400 Date: Sat, 13 Sep 2008 00:14:18 +0200 From: Andi Kleen To: Thomas Gleixner Cc: Andi Kleen , Yinghai Lu , Andrew Morton , mingo@elte.hu, hpa@zytor.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] apci: dump slit Message-ID: <20080912221418.GA11730@one.firstfloor.org> References: <1221243468-8016-1-git-send-email-yhlu.kernel@gmail.com> <20080912122031.eca8723e.akpm@linux-foundation.org> <86802c440809121229i14727af4nd1416044b06ebb94@mail.gmail.com> <878wtxrrwh.fsf@basil.nowhere.org> <20080912213053.GR7714@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 12, 2008 at 11:49:04PM +0200, Thomas Gleixner wrote: > On Fri, 12 Sep 2008, Andi Kleen wrote: > > > 1.) what guarantees that we reach user space ? > > > > Broken SLITs don't prevent booting. > > Of course you can guarantee that. Yes I'm pretty sure: (a) the kernel does a sanity check on SLITs and replaces them with a fallback if they're bogus. Even that is not strictly needed for correctness, just for performance. (b) SLIT information is only an optimization, but does not really break anything if it's wrong. In the worst case your scheduler domains or your zone fallback lists are not quite optimally set up, but they will still work. -Andi -- ak@linux.intel.com