From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH -mm 7/8] ACPI hibernation: Utilize hardware signature Date: Thu, 10 Jul 2008 10:34:23 +0200 Message-ID: <20080710083423.GD5629@elf.ucw.cz> References: <200807100152.17755.rjw@sisk.pl> <200807100205.52308.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from gprs189-60.eurotel.cz ([160.218.189.60]:37077 "EHLO gprs189-60.eurotel.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750955AbYGJIda (ORCPT ); Thu, 10 Jul 2008 04:33:30 -0400 Content-Disposition: inline In-Reply-To: <200807100205.52308.rjw@sisk.pl> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J. Wysocki" Cc: Andrew Morton , ACPI Devel Maling List , LKML , pm list , Shaohua Li , Andi Kleen > Subject: ACPI hibernation: Utilize hardware signature > > ACPI defines a hardware signature. BIOS calculates the signature > according to hardware configure and if hardware changes while > hibernated, the signature will change. In that case, S4 resume > should fail. > > Still, there may be systems on which this mechanism does not work > correctly, so it is better to provide a workaround for them. For > this reason, add a new switch to the acpi_sleep= command line > argument allowing one to disable hardware signature checking. > > Signed-off-by: Shaohua Li > Signed-off-by: Rafael J. Wysocki ACK. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html