linux-kernel - Re: [PATCH net-next 3/5] driver/net: enic: Try DMA 64 first, then failover to DMA

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Message-ID: <alpine.LNX.2.03.1309041127380.1814@gmail.com>
Date:	Wed, 4 Sep 2013 11:31:38 +0530 (IST)
From:	Govindarajulu Varadarajan <govindarajulu90@...il.com>
To:	Govindarajulu Varadarajan <govindarajulu90@...il.com>
cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, benve@...co.com, ssujith@...co.com,
	nistrive@...co.com, umalhi@...co.com
Subject: Re: [PATCH net-next 3/5] driver/net: enic: Try DMA 64 first, then
 failover to DMA

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 <ssujith@...co.com>
> Signed-off-by: Christian Benvenuti <benve@...co.com>
> Signed-off-by: Govindarajulu Varadarajan <govindarajulu90@...il.com>
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