Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753050AbbDAWAS (ORCPT ); Wed, 1 Apr 2015 18:00:18 -0400 Received: from pandora.arm.linux.org.uk ([78.32.30.218]:57748 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752725AbbDAWAO (ORCPT ); Wed, 1 Apr 2015 18:00:14 -0400 Date: Wed, 1 Apr 2015 22:59:50 +0100 From: Russell King - ARM Linux To: Kevin Hilman Cc: Andrew Morton , Marc Zyngier , Geert Uytterhoeven , Ard Biesheuvel , Will Deacon , Simon Horman , Tyler Baker , Nishanth Menon , Arnd Bergmann , "linux-sh@vger.kernel.org" , Catalin Marinas , Magnus Damm , "grygorii.strashko@linaro.org" , "linux-omap@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Linux Kernel Development , "linux-mm@kvack.org" Subject: Re: [PATCH] mm/migrate: Mark unmap_and_move() "noinline" to avoid ICE in gcc 4.7.3 Message-ID: <20150401215950.GC4027@n2100.arm.linux.org.uk> References: <20150327002554.GA5527@verge.net.au> <20150327100612.GB1562@arm.com> <7hbnj99epe.fsf@deeprootsystems.com> <7h8uec95t2.fsf@deeprootsystems.com> <551BBEC5.7070801@arm.com> <20150401124007.20c440cc43a482f698f461b8@linux-foundation.org> <7hwq1v4iq4.fsf@deeprootsystems.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7hwq1v4iq4.fsf@deeprootsystems.com> 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 Content-Length: 1070 Lines: 27 On Wed, Apr 01, 2015 at 02:54:59PM -0700, Kevin Hilman wrote: > Your patch on top of Geert's still compiles fine for me with gcc-4.7.3. > However, I'm not sure how specific we can be on the versions. > > /me goes to test a few more compilers... OK... > > ICE: 4.7.1, 4.7.3, 4.8.3 > OK: 4.6.3, 4.9.2, 4.9.3 > > The diff below[2] on top of yours compiles fine here and at least covers > the compilers I *know* to trigger the ICE. Interesting. I'm using stock gcc 4.7.4 here, though I'm not building -next (only mainline + my tree + arm-soc) and it hasn't shown a problem yet. I think we need to ask the question: is the bug in stock GCC or Linaro GCC? If it's not in stock GCC, then it's a GCC vendor problem :) -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/