Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762014Ab3IDGBx (ORCPT ); Wed, 4 Sep 2013 02:01:53 -0400 Received: from mail-pb0-f47.google.com ([209.85.160.47]:62974 "EHLO mail-pb0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761399Ab3IDGBw (ORCPT ); Wed, 4 Sep 2013 02:01:52 -0400 Date: Wed, 4 Sep 2013 11:31:38 +0530 (IST) From: Govindarajulu Varadarajan X-X-Sender: hydrogen@as-rtp-nw.cisco.com To: Govindarajulu Varadarajan cc: davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, benve@cisco.com, ssujith@cisco.com, nistrive@cisco.com, umalhi@cisco.com Subject: Re: [PATCH net-next 3/5] driver/net: enic: Try DMA 64 first, then failover to DMA In-Reply-To: <1378273638-7780-4-git-send-email-govindarajulu90@gmail.com> Message-ID: References: <1378273638-7780-1-git-send-email-govindarajulu90@gmail.com> <1378273638-7780-4-git-send-email-govindarajulu90@gmail.com> User-Agent: Alpine 2.03 (LNX 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 964 Lines: 28 Hi Dave The subject for this should be "driver/net: enic: Try DMA 64 first, then failover to DMA 32" The "32" got truncated, please add this while committing. Let me know if you want me to send another patch. thanks //govind On Wed, 4 Sep 2013, Govindarajulu Varadarajan wrote: > In servers with more than 1.1 TB of RAM, the existing 40/32 bit DMA > could cause failure as the DMA-able address could go outside the range > addressable using 40/32 bits. > > The following patch first tried 64 bit DMA if possible, failover to 32 > bit. > > Signed-off-by: Sujith Sankar > Signed-off-by: Christian Benvenuti > Signed-off-by: Govindarajulu Varadarajan -- 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/