From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753450AbaJMKw6 (ORCPT ); Mon, 13 Oct 2014 06:52:58 -0400 Received: from mho-02-ewr.mailhop.org ([204.13.248.72]:46954 "EHLO mho-02-ewr.mailhop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752979AbaJMKw5 convert rfc822-to-8bit (ORCPT ); Mon, 13 Oct 2014 06:52:57 -0400 X-Mail-Handler: Dyn Standard SMTP by Dyn X-Originating-IP: 77.231.195.203 X-Report-Abuse-To: abuse@dyndns.com (see http://www.dyndns.com/services/sendlabs/outbound_abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX19cmOZxH1Vso6UrFA+90bif Date: Mon, 13 Oct 2014 12:52:46 +0200 From: =?iso-8859-1?Q?Llu=EDs?= Batlle i Rossell To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: Carles =?iso-8859-1?Q?Pag=E8s?= , linux-arm-kernel@lists.infradead.org Subject: Regarding tx-nocache-copy in the Sheevaplug Message-ID: <20141013105246.GD1972@vicerveza.homeunix.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline X-Accept-Language: ca, es, eo, ru, en, jbo, tokipona User-Agent: Mutt/1.5.21 (2010-09-15) Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, on the 7th of January 2014 ths patch was applied: https://lkml.org/lkml/2014/1/7/307 [PATCH v2] net: Do not enable tx-nocache-copy by default In the Sheevaplug (ARM Feroceon 88FR131 from Marvell) this made packets to be sent corrupted. I think this machine has something special about the cache. Enabling back this tx-nocache-copy (as it used to be before the patch) the transfers work fine again. I think that most people, encountering this problem, completely disable the tx offload instead of enabling back this setting. Is this an ARM kernel problem regarding this platform? Thank you, Lluís