From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754739AbcBEW3j (ORCPT ); Fri, 5 Feb 2016 17:29:39 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:60852 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754592AbcBEW3h (ORCPT ); Fri, 5 Feb 2016 17:29:37 -0500 Date: Fri, 5 Feb 2016 14:29:36 -0800 From: Greg Kroah-Hartman To: Phil Turmel Cc: Boqun Feng , LKML , Michael Ellerman , "Peter Zijlstra (Intel)" , "Paul E. McKenney" , Benjamin Herrenschmidt , Paul Mackerras , Thomas Gleixner , linuxppc-dev@lists.ozlabs.org Subject: Re: Bisected Regression 4.3.5 => 4.4.1 booting HP ZBook in EFI mode Message-ID: <20160205222936.GA7139@kroah.com> References: <56B518C4.8030007@turmel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56B518C4.8030007@turmel.org> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 05, 2016 at 04:48:52PM -0500, Phil Turmel wrote: > Hello all, > > I tried to get off of v4.3.x today by moving to v4.4.1. > My laptop failed to boot -- stuck with the BIOS boot logo still > showing. I'm direct-booting a merged kernel & initramfs in > EFI mode. > > I bisected to badc688 "powerpc: Make {cmp}xchg* and their atomic_ versions fully ordered" > which is upstream commit 81d7a329. > > I'm stumped as to how that powerpc patch can affect my x86 laptop, an > HP ZBook 17 w/ i7 processor & nouveau graphics, but it certainly > does. The bisect was stable and I confirmed by reverting it on > top of the intended v4.4.1. That's crazy, nothing should even be rebuilt if you revert that patch, so I don't see how that could affect things here. Can you verify that nothing does get rebuilt when you do this? thanks, greg k-h