Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753265Ab2FEPmZ (ORCPT ); Tue, 5 Jun 2012 11:42:25 -0400 Received: from nat28.tlf.novell.com ([130.57.49.28]:60238 "EHLO nat28.tlf.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753087Ab2FEPmY convert rfc822-to-8bit (ORCPT ); Tue, 5 Jun 2012 11:42:24 -0400 Message-Id: <4FCE44FC0200007800088524@nat28.tlf.novell.com> X-Mailer: Novell GroupWise Internet Agent 12.0.0 Date: Tue, 05 Jun 2012 16:42:20 +0100 From: "Jan Beulich" To: "Don Zickus" Cc: , "LKML" Subject: Re: [PATCH] x86,nmi: Fix section mismatch warnings on 32-bit References: <1338839763-11140-1-git-send-email-dzickus@redhat.com> <4FCDDB7D0200007800088390@nat28.tlf.novell.com> <20120605144734.GU32472@redhat.com> In-Reply-To: <20120605144734.GU32472@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1351 Lines: 30 >>> On 05.06.12 at 16:47, Don Zickus wrote: > On Tue, Jun 05, 2012 at 09:12:13AM +0100, Jan Beulich wrote: >> So before applying a change like this, I'd really like to understand >> the issue itself. Could you simply attach the nmi_selftest.o file >> that you get without your patch here (and indicate which >> upstream version or revision the corresponding source file was >> from, to be able to re-construct what the compiler actually did)? > > I could but it might be easier for you to re-create it on your end. > Using gcc-4.4.4 on an x86_64 box and v3.5-rc1, I just set > CONFIG_DEBUG_NMI_SELFTEST to 'y' and compile with > > make ARCH=i386 O=out/i686 > > and it easily reproduces for me. I don't think I have a plain 4.4.4 around anywhere, nor is it clear whether you used a plain one (and how it was configured). For tricky, highly version dependent things like this (where a compiler bug also can't be excluded), having the _exact_ object file the problem was seen with would be much easier than trying to hunt down a compiler version that I can reproduce this with. Jan -- 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/