From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750828AbXCFIDX (ORCPT ); Tue, 6 Mar 2007 03:03:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751260AbXCFIDX (ORCPT ); Tue, 6 Mar 2007 03:03:23 -0500 Received: from www.osadl.org ([213.239.205.134]:53936 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750828AbXCFIDW (ORCPT ); Tue, 6 Mar 2007 03:03:22 -0500 Subject: Re: [5/6] 2.6.21-rc2: known regressions From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Ingo Molnar Cc: Linus Torvalds , Adrian Bunk , Andrew Morton , Linux Kernel Mailing List , Michal Piotrowski , Emil Karlson , "Michael S. Tsirkin" , Soeren Sonnenburg , Len Brown In-Reply-To: <20070306072542.GA30153@elte.hu> References: <20070305015040.GJ3441@stusta.de> <1173138193.24738.236.camel@localhost.localdomain> <1173142948.24738.257.camel@localhost.localdomain> <20070306072542.GA30153@elte.hu> Content-Type: text/plain Date: Tue, 06 Mar 2007 09:09:25 +0100 Message-Id: <1173168565.24738.273.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2007-03-06 at 08:25 +0100, Ingo Molnar wrote: > The programming of periodic tick devices needs to be saved/restored > across suspend/resume - otherwise we might end up with a system coming > up that relies on getting a PIT (or HPET) interrupt, while those devices > default to 'no interrupts' after powerup. (To confuse things it worked > to a certain degree on some systems because the lapic gets initialized > as a side-effect of SMP bootup.) > > This suspend / resume thing was dropped unintentionally during the > last-minute -mm code reshuffling. > > Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner