From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752706Ab1GDBHe (ORCPT ); Sun, 3 Jul 2011 21:07:34 -0400 Received: from mail-qw0-f46.google.com ([209.85.216.46]:33653 "EHLO mail-qw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752558Ab1GDBHd (ORCPT ); Sun, 3 Jul 2011 21:07:33 -0400 Date: Sun, 3 Jul 2011 21:07:23 -0400 (EDT) From: Nicolas Pitre X-X-Sender: nico@xanadu.home To: Per Forlin cc: Arnd Bergmann , Russell King - ARM Linux , linux-arm-kernel@lists.infradead.org, linaro-dev@lists.linaro.org, Linus Walleij , linux-mmc@vger.kernel.org, lkml , Chris Ball , Nickolay Nickolaev Subject: Re: [PATCH v8 00/12] use nonblock mmc requests to minimize latency In-Reply-To: Message-ID: References: <1309248717-14606-1-git-send-email-per.forlin@linaro.org> <201107011844.44058.arnd@arndb.de> <20110702122938.GI21898@n2100.arm.linux.org.uk> <201107022137.30138.arnd@arndb.de> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 3 Jul 2011, Per Forlin wrote: > On 2 July 2011 21:37, Arnd Bergmann wrote: > > On Saturday 02 July 2011 14:29:38 Russell King - ARM Linux wrote: > >> One other thing to be considered here is whether this idea should be > >> limited to just MMC or whether it should be extended further, to > >> move the DMA mapping stuff out of the hot path for other block devices > >> too. > >> > >> There are ARM systems with SATA which do 28MB/s - which could be > >> improved by this technique. > > > > Excellent point. We had discussed SATA items in the context of Linaro > > work before, and the conclusion was always that we wouldn't need to > > do any work for it in the common code. I'll make sure that we bring > > it up at the meeting next month in Cambridge so we can officially > > assign someone to do this. > > > Arnd, do you know if any of the Linaro boards have SATA? The latest i.mx53 boards have SATA. Nicolas