From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932446AbbAIJtp (ORCPT ); Fri, 9 Jan 2015 04:49:45 -0500 Received: from foss-mx-na.foss.arm.com ([217.140.108.86]:58480 "EHLO foss-mx-na.foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932113AbbAIJtn (ORCPT ); Fri, 9 Jan 2015 04:49:43 -0500 Date: Fri, 9 Jan 2015 09:49:34 +0000 From: Catalin Marinas To: Pavel Machek Cc: Russell King - ARM Linux , Vince Weaver , "nicolas.pitre@linaro.org" , Linus Torvalds , Marc Zyngier , kernel list , "vincent.weaver@maine.edu" Subject: Re: [PATCH] Revert 9fc2105aeaaf56b0cf75296a84702d0f9e64437b to fix pyaudio (and probably more) Message-ID: <20150109094933.GA24408@e104818-lin.cambridge.arm.com> References: <20150107205346.GO12302@n2100.arm.linux.org.uk> <20150108103911.GQ12302@n2100.arm.linux.org.uk> <20150108161908.GA17290@e104818-lin.cambridge.arm.com> <20150108163450.GV12302@n2100.arm.linux.org.uk> <20150108164111.GB17290@e104818-lin.cambridge.arm.com> <20150108165705.GW12302@n2100.arm.linux.org.uk> <20150108224614.GA5034@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150108224614.GA5034@amd> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 08, 2015 at 10:46:14PM +0000, Pavel Machek wrote: > On Thu 2015-01-08 16:57:05, Russell King - ARM Linux wrote: > > On Thu, Jan 08, 2015 at 04:41:12PM +0000, Catalin Marinas wrote: > > > On Thu, Jan 08, 2015 at 04:34:50PM +0000, Russell King - ARM Linux wrote: > > > > On Thu, Jan 08, 2015 at 04:19:08PM +0000, Catalin Marinas wrote: > > > > > I really think we should stop this thread. User ABI breakage fixed now. > > > > > > > > No. Vince's email shows a more serious problem. > > > > > > > > The ABI breakage issue was reported before the patches were apparently > > > > merged, but that information seems to have been lost. We need to > > > > understand how that happened so similar instances don't happen in the > > > > future. > > > > > > FYI, searching for "Vince Weaver" and "bogomips" found this: > > > > > > https://lkml.org/lkml/2013/7/11/454 > > > > Gah. > > > > It looks like the report was made by hanging it into a totally different > > thread to the patches which caused the problem, and which went nowhere > > near the ARM kernel mailing lists. > > This went at least to Will Deacon and Nicolas Pitre. > > https://lkml.org/lkml/2013/5/15/217 > > So AFAICT yes, we knowingly broke at least > com.securiteinfo.android.bogomips application. Hmm, "BogoMIPS is a tool used to create a web page about Android Benchmarks". And a stupid table here: https://www.securiteinfo.com/divers/android_bogomips_benchmark.shtml. Even though it's against the user ABI kernel policy, I must say I'm glad we broke this one ;). pyaudio is a valid complaint though (and not about the bogomips value but about the presence of the "bogomips" string). -- Catalin