From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935283Ab3BTLOl (ORCPT ); Wed, 20 Feb 2013 06:14:41 -0500 Received: from 8bytes.org ([85.214.48.195]:55307 "EHLO mail.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935012Ab3BTLM6 (ORCPT ); Wed, 20 Feb 2013 06:12:58 -0500 Date: Wed, 20 Feb 2013 12:12:55 +0100 From: Joerg Roedel To: Ingo Molnar Cc: Linus Torvalds , Linux Kernel Mailing List , "H. Peter Anvin" , Thomas Gleixner , Andrew Morton Subject: Re: [GIT PULL] x86/platform changes for v3.9 Message-ID: <20130220111255.GB26252@8bytes.org> References: <20130219154128.GA15608@gmail.com> <20130220090238.GA18213@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130220090238.GA18213@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Wed Feb 20 12:12:56 2013 X-DSPAM-Confidence: 0.9993 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 5124afb822971438219857 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 20, 2013 at 10:02:38AM +0100, Ingo Molnar wrote: > Timers and APIC would be my leading suspect - but scheduler and > hotplug changes might be the culprits as well. > > Yesterday, while preparing the trees I wanted to mention this > x86/apic commit: > > 336224ba5e4f x86, apic: Mask IO-APIC and PIC unconditionally on LAPIC resume > > ... as a change that needs monitored because it changes the > suspend and shutdown sequence but then skipped mentioning it > because it seemed relatively old and proven. Hmm, this commit only touches the resume-path. I would wonder if this has something to do with reboot, can't rule it out, though. > But there are other potentially dangerous commits as well - I > suspect we won't be able to avoid a bisection :-/ Yes, I think a bisection would be best if the problem is reproducible. Joerg