Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758964Ab0FCBiL (ORCPT ); Wed, 2 Jun 2010 21:38:11 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:46561 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756588Ab0FCBiJ (ORCPT ); Wed, 2 Jun 2010 21:38:09 -0400 Date: Thu, 3 Jun 2010 02:37:58 +0100 From: Matthew Garrett To: "Justin P. Mattock" Cc: Robert Hancock , x86@kernel.org, tglx@linutronix.de, linux-kernel@vger.kernel.org Subject: Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi_table. Message-ID: <20100603013758.GA18755@srcf.ucam.org> References: <20100601212901.GA18390@srcf.ucam.org> <4C057EF0.2030808@gmail.com> <4C05E800.1010400@gmail.com> <4C05F3BF.6090503@gmail.com> <4C06ECAA.3060708@gmail.com> <4C06ED18.2010400@gmail.com> <4C06F1DD.8060004@gmail.com> <4C06F6EA.6090701@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C06F6EA.6090701@gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1034 Lines: 31 On Wed, Jun 02, 2010 at 05:27:22PM -0700, Justin P. Mattock wrote: > On 06/02/2010 05:20 PM, Robert Hancock wrote: >> #include >> >> int main() { >> iopl(3); >> outb(2, 0xcf9); >> sleep(1); >> outb(6, 0xcf9); >> return 0; >> } >> >> That's basically what PCI reboot does. > > the above code reboot's the machine as it should.. > I can look at that(need to take a break first though) > and see.. That's pretty infuriating. The ACPI-provided definition doesn't work, and there's no ACPI mechanism for expressing the more complex cf9 behaviour. Windows doesn't appear to special case this, so we're probably left trying to figure out why the keyboard controller method doesn't work. Sigh. -- Matthew Garrett | mjg59@srcf.ucam.org -- 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/