Return-path: Received: from smtp.andrew.cmu.edu ([128.2.10.83]) by canuck.infradead.org with esmtps (Exim 4.63 #1 (Red Hat Linux)) id 1IYpkQ-0006zM-A9 for kexec@lists.infradead.org; Fri, 21 Sep 2007 17:09:17 -0400 From: Jeremy Maitin-Shepard Subject: Re: [linux-pm] Re: [RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump References: <200709212215.26978.rjw@sisk.pl> <87hcln69zv.fsf@jbms.ath.cx> <200709212253.02158.rjw@sisk.pl> Date: Fri, 21 Sep 2007 17:08:49 -0400 In-Reply-To: <200709212253.02158.rjw@sisk.pl> (Rafael J. Wysocki's message of "Fri\, 21 Sep 2007 22\:53\:00 +0200") Message-ID: <87d4wb680u.fsf@jbms.ath.cx> MIME-Version: 1.0 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: "Rafael J. Wysocki" 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 "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 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. -- Jeremy Maitin-Shepard _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec