From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f182.google.com (mail-wi0-f182.google.com [209.85.212.182]) by kanga.kvack.org (Postfix) with ESMTP id E7BAA6B0032 for ; Wed, 1 Apr 2015 18:00:19 -0400 (EDT) Received: by wiaa2 with SMTP id a2so83120014wia.0 for ; Wed, 01 Apr 2015 15:00:19 -0700 (PDT) Received: from pandora.arm.linux.org.uk (pandora.arm.linux.org.uk. [2001:4d48:ad52:3201:214:fdff:fe10:1be6]) by mx.google.com with ESMTPS id g6si5512061wjn.160.2015.04.01.15.00.17 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 01 Apr 2015 15:00:18 -0700 (PDT) Date: Wed, 1 Apr 2015 22:59:50 +0100 From: Russell King - ARM Linux 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> Sender: owner-linux-mm@kvack.org List-ID: 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" 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org