From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759323AbYC0U4I (ORCPT ); Thu, 27 Mar 2008 16:56:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759783AbYC0Uzo (ORCPT ); Thu, 27 Mar 2008 16:55:44 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:47187 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758702AbYC0Uzn (ORCPT ); Thu, 27 Mar 2008 16:55:43 -0400 From: "Rafael J. Wysocki" To: Jeremy Fitzhardinge Subject: Re: what's the incompatibility between hibernation and =?iso-8859-1?q?hotplug=09memory?= Date: Thu, 27 Mar 2008 21:55:01 +0100 User-Agent: KMail/1.9.6 (enterprise 20070904.708012) Cc: Pavel Machek , Linux Kernel Mailing List References: <47EAD9A7.6020609@goop.org> <20080327084936.GD25876@elf.ucw.cz> <47EC0842.3020109@goop.org> In-Reply-To: <47EC0842.3020109@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803272155.01463.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, 27 of March 2008, Jeremy Fitzhardinge wrote: > Pavel Machek wrote: > > Hi! > > > > > >>> I noticed that Kconfig warns that hibernation and hotplug memory are not > >>> compatible. What's the issue? > >>> > >> Generally, we might not be able to handle memory unplugged at a wrong time > >> (eg. after we've created the image). > >> > >> Which part of Kconfig says that exactly? > >> > > > > Actually I believe it is simpler than that. We were not prepared to > > deal with memory holes in hibernation code, so we just disabled it in > > Kconfig... > > Doesn't that mean its generally incompatible with non-flatmem memory > arrangements rather than hotplug memory specifically? No, it should work with NUMA nowadays, actually. Perhaps it's worth trying it with hotplug memory and see what problems arise? Thanks, Rafael