From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755334Ab3BAHdZ (ORCPT ); Fri, 1 Feb 2013 02:33:25 -0500 Received: from mga09.intel.com ([134.134.136.24]:56660 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751532Ab3BAHdX (ORCPT ); Fri, 1 Feb 2013 02:33:23 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,579,1355126400"; d="p7s'?scan'208";a="256001709" From: "Woodhouse, David" To: Russell King - ARM Linux CC: Kim Phillips , Borislav Petkov , Andrew Morton , Daniel Santos , David Rientjes , Rusty Russell , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Rob Herring Subject: Re: [RFC] arm: use built-in byte swap function Thread-Topic: [RFC] arm: use built-in byte swap function Thread-Index: AQHN/1fuyq8jjbGdz0yFuzpMnvmBrphjK9aAgADBR4CAAEfsAIAAaRKA Date: Fri, 1 Feb 2013 07:33:17 +0000 Message-ID: <1359703995.23531.6.camel@shinybook.infradead.org> References: <20130128193033.8a0b0a871150c99247f05a95@freescale.com> <20130129083522.GA14302@pd.tnic> <1359478014.3529.157.camel@shinybook.infradead.org> <20130129174249.GB25415@pd.tnic> <1359482147.3529.161.camel@shinybook.infradead.org> <20130129181046.GC25415@pd.tnic> <1359541333.3529.186.camel@shinybook.infradead.org> <20130130200900.9d7cf7908caeaef4ecee1d61@freescale.com> <20130131092801.GV23505@n2100.arm.linux.org.uk> <20130131145947.f62474a0600848df86548b96@freescale.com> <20130201011712.GF23505@n2100.arm.linux.org.uk> In-Reply-To: <20130201011712.GF23505@n2100.arm.linux.org.uk> Accept-Language: en-GB, en-US Content-Language: en-GB X-MS-Has-Attach: yes X-MS-TNEF-Correlator: Content-Type: multipart/signed; micalg=sha1; protocol="application/x-pkcs7-signature"; boundary="=-CaqAiCVvCP6q54dZ92Cf" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-CaqAiCVvCP6q54dZ92Cf Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2013-02-01 at 01:17 +0000, Russell King - ARM Linux wrote: >=20 > > I've tried both gcc 4.6.3 [1] and 4.6.4 [2]. If you can point me to > > a 4.5.x, I'll try that, too, but as it stands now, if one moves the > > code added to swab.h below outside of its armv6 protection, > > gcc adds calls to __bswapsi2. >=20 > Take a look at the message I sent on the 29th towards the beginning of > this thread for details of gcc 4.5.4 behaviour. I'd like to see a comment (with PR# if appropriate) explaining clearly *why* it isn't enabled for