Return-path: Received: from ogre.sisk.pl ([217.79.144.158]) by canuck.infradead.org with esmtp (Exim 4.63 #1 (Red Hat Linux)) id 1IYpo2-000714-NF for kexec@lists.infradead.org; Fri, 21 Sep 2007 17:13:02 -0400 From: "Rafael J. Wysocki" Subject: Re: [linux-pm] Re: [RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump Date: Fri, 21 Sep 2007 23:25:37 +0200 References: <200709212253.02158.rjw@sisk.pl> <87d4wb680u.fsf@jbms.ath.cx> In-Reply-To: <87d4wb680u.fsf@jbms.ath.cx> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200709212325.39599.rjw@sisk.pl> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=infradead.org+dwmw2=infradead.org@lists.infradead.org To: Jeremy Maitin-Shepard Cc: Nigel Cunningham , nigel@suspend2.net, Kexec Mailing List , linux-kernel@vger.kernel.org, Alan Stern , "Eric W. Biederman" , "Huang, Ying" , linux-pm@lists.linux-foundation.org, huang ying , Andrew Morton On Friday, 21 September 2007 23:08, Jeremy Maitin-Shepard wrote: > "Rafael J. Wysocki" writes: > > > On Friday, 21 September 2007 22:26, Jeremy Maitin-Shepard wrote: > >> "Rafael J. Wysocki" writes: > >> > >> [snip] > >> > >> > The ACPI NVS area is explicitly marked as reserved and we don't save it. > >> > On x86_64 we don't save any memory areas marked as reserved and yet the > > above > >> > happens. > >> > >> I think you have mentioned before, though, that ACPI is first > >> initialized by the boot kernel, before it is later initialized by > >> resuming kernel. This could well be the source of the problem. > > > No, it's not. I have tested that too with an ACPI-less boot kernel. > > Well, it seems that there just must be some other bug. I would define > anything that differs between the post-resume initialization of ACPI I'm not sure what you mean. > from the normal boot initialization of ACPI as a bug. If the interaction > with the hardware is the same, then the behavior will be the same. The ACPI platform firmware is allowed to preserve information accross the hibernation-resume cycle, so this need not be the same. Greetings, Rafael _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec