Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754072AbaDDSTc (ORCPT ); Fri, 4 Apr 2014 14:19:32 -0400 Received: from mail-vc0-f174.google.com ([209.85.220.174]:56767 "EHLO mail-vc0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753638AbaDDST1 (ORCPT ); Fri, 4 Apr 2014 14:19:27 -0400 MIME-Version: 1.0 In-Reply-To: <20140404162108.GA17393@srcf.ucam.org> References: <20140403121314.246b03a7@gandalf.local.home> <533DED74.6050202@linux.intel.com> <20140403194018.7c67aec7@gandalf.local.home> <533DF455.4040908@linux.intel.com> <533DF8D2.9060508@zytor.com> <533E0A94.5040007@linux.intel.com> <20140404151203.GA12370@srcf.ucam.org> <20140404154520.GA14980@srcf.ucam.org> <20140404162108.GA17393@srcf.ucam.org> Date: Fri, 4 Apr 2014 11:19:26 -0700 X-Google-Sender-Auth: JflZECSKn349ycBmiTcsEur5xAI Message-ID: Subject: Re: [BUG] x86: reboot doesn't reboot From: Linus Torvalds To: Matthew Garrett Cc: "Li, Aubrey" , "H. Peter Anvin" , Steven Rostedt , Ingo Molnar , LKML , Thomas Gleixner Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 4, 2014 at 9:21 AM, Matthew Garrett wrote: > > Because Windows doesn't use CF9 but machines reboot anyway. That > shouldn't be a controversial point of view. No, that's not a controversial view. But it's not the case for us, and I haven't seen a patch to make us work more like Windows, so for *us*, and in this universe (rather than some make-believe one), the fact that we need to use pci to reboot is simply a fact. Including, very much, on "production hardware". So I repeat: I'd love to fix whatever it is that we do that is different and triggers problems (particularly on Dell, but there are certainly other vendors too). But in the absense of that (and I haven't actually seen a serious patch for it), denying that reboot=pci is sometimes the right thing - regardless of "production" hardware or not is not valid. That's what I reacted to. Linus -- 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/