From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nigel Cunningham Subject: Re: [linux-pm] Re: [patch] hibernation: utilize ACPI hardware signature Date: Thu, 03 Jan 2008 19:31:13 +1100 Message-ID: <477C9D51.5000604@nigel.suspend2.net> References: <1199257162.14632.4.camel@sli10-desk.sh.intel.com> <200801021505.39789.rjw@sisk.pl> <477C019D.1070001@nigel.suspend2.net> <200801022301.45706.rjw@sisk.pl> Reply-To: nigel@nigel.suspend2.net Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Return-path: Received: from home.nigel.suspend2.net ([203.171.70.205]:33686 "EHLO server1.example.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756722AbYACIbQ (ORCPT ); Thu, 3 Jan 2008 03:31:16 -0500 In-Reply-To: <200801022301.45706.rjw@sisk.pl> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J. Wysocki" Cc: Shaohua Li , linux acpi , pm list , Pavel Machek Hi. Rafael J. Wysocki wrote: >> I suppose we can always disable this when we start to support hardware >> changing over hibernate (I have ideas in this direction - memory cold >> plugging, for a start). > > Well, if we support such features, we won't be following ACPI any more. Mmm. Apparently I'm not as focused on specs as you :). I was starting to think through whether it could make for a new and much faster was to boot live cds - something along the lines of complete redetection of hardware and memory cold plugging. Of course it's only in the 'I wonder if this would be possible' stage at the mo, but seemed at least feasible - keep the e820 tables from boot, make _init routines not get thrown away and do something like the kexec device shutdown etc around an atomic restore. I know there'd be limitations, but perhaps worth thinking about... Nigel