linux-kernel - Re: [PATCH v3 2/2] rsxx: Moving pci_map

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Date:	Wed, 04 Sep 2013 14:19:53 -0500
From:	Brian King <brking@...ux.vnet.ibm.com>
To:	"Philip J. Kelleher" <pjk1939@...ux.vnet.ibm.com>
CC:	axboe@...nel.dk, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] rsxx: Moving pci_map_page to prevent overflow.

On 09/04/2013 01:59 PM, Philip J. Kelleher wrote:
> From: Philip J Kelleher <pjk1939@...ux.vnet.ibm.com>
> 
> The pci_map_page function has been moved into our
> issued workqueue to prevent an us running out of
> mappable addresses on non-HWWD PCIe x8 slots. The
> maximum amount that can possible be mapped at one
> time now is: 255 dmas X 4 dma channels X 4096 Bytes.
> 
> Signed-off-by: Philip J Kelleher <pjk1939@...ux.vnet.ibm.com>

Reviewed-by: Brian King <brking@...ux.vnet.ibm.com>


-- 
Brian King
Power Linux I/O
IBM Linux Technology Center


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