Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933643Ab0FCCTE (ORCPT ); Wed, 2 Jun 2010 22:19:04 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:60980 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933609Ab0FCCTC (ORCPT ); Wed, 2 Jun 2010 22:19:02 -0400 Date: Thu, 3 Jun 2010 03:18:51 +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: <20100603021851.GA19546@srcf.ucam.org> References: <4C05F3BF.6090503@gmail.com> <4C06ECAA.3060708@gmail.com> <4C06ED18.2010400@gmail.com> <4C06F1DD.8060004@gmail.com> <4C06F6EA.6090701@gmail.com> <20100603013758.GA18755@srcf.ucam.org> <4C071048.9040209@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C071048.9040209@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: 810 Lines: 25 On Wed, Jun 02, 2010 at 07:15:36PM -0700, Justin P. Mattock wrote: > as soon as I change: > > int main() { > iopl(3); > outb(6, 0xcf9); > usleep(100); > outb(6, 0xcf9); > return 0; > } > (the above gave a command prompt > with numerous tries) Ok, so it's not that straghtforward. Sigh. There's various hacky workarounds we could do here, but Windows doesn't seem to do them so I lean towards suspecting that there's something wrong with our keyboard controller reboot mechanism. I'll try doing some more tracing. -- 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/