From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756696Ab1I2OmJ (ORCPT ); Thu, 29 Sep 2011 10:42:09 -0400 Received: from moutng.kundenserver.de ([212.227.126.187]:52619 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755070Ab1I2OmH (ORCPT ); Thu, 29 Sep 2011 10:42:07 -0400 From: Arnd Bergmann To: Mark Salter Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [PATCH v3 19/24] C6X: headers Date: Thu, 29 Sep 2011 16:41:21 +0200 Message-ID: <3471979.HTqjRmXnHP@wuerfel> User-Agent: KMail/4.7.1 (Linux/3.0.0-rc1nosema+; KDE/4.7.1; x86_64; ; ) In-Reply-To: <1317306284.2580.119.camel@deneb.redhat.com> References: <1317155405-26235-1-git-send-email-msalter@redhat.com> <201109281607.11228.arnd@arndb.de> <1317306284.2580.119.camel@deneb.redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V02:K0:AENHFZ8m51FrFZWhPGxkGjvQGVyroUEm7nrC+lnQpz2 xq7bFdqqc23hcAWp30LxP6sTT4peUd8F+aQyx6bxjm/X1fEmcF VfB4LWOLR+lC0BwmPHuoB7jfQi1q5npnOzBbJhwA5758tdDqE+ 6pGMHpw1QF59mKWRbSVrebBA13wpPwB1fgOoo5qZ1oKfvPOV5P wTElbuhhhAM0NelfJj4eIJz8dAlFpPEqxmNYLgtKZ5q1FafKaW uwI3g3S7caBXYjETmMtH1KnOR/UVdT0ldvhbfRmz0nIxEhkMQX EgzTRrAtlRWw+9/mh1whuraKzriC0o9fOgxad4yTKiNS3yMRqx vaYG2otsWQcBLIA1w/KU= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 29 September 2011 10:24:43 Mark Salter wrote: > I think we still want the c6x unaligned.h because the hardware can do > unaligned 32 and 64 memory accesses with no performance penalty. There > are some addressing mode limitations which is why the compiler doesn't > use them generally. Ok. I guess you still only need to override __cpu_to_{le,be}{16,32,64}p and __{le,be}{16,32,64}_to_cpup then and use include/linux/unaligned/access_ok.h. Arnd