linux-kernel - Re: [PATCH 2/5] iommu/amd: Implement DOMAIN_ATTR

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Message-ID: <20120120160128.GF2205@amd.com>
Date:	Fri, 20 Jan 2012 17:01:28 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
CC:	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	David Woodhouse <dwmw2@...radead.org>,
	David Brown <davidb@...eaurora.org>,
	Tony Lindgren <tony@...mide.com>,
	Stuart Yoder <b08248@...il.com>,
	Scott Wood <scottwood@...escale.com>,
	Hiroshi Doyu <hdoyu@...dia.com>
Subject: Re: [PATCH 2/5] iommu/amd: Implement DOMAIN_ATTR_GEOMETRY attribute

On Thu, Jan 19, 2012 at 05:27:09PM +0100, Laurent Pinchart wrote:
> > Well, u64 is a catch-all datatype which should suit all drivers. Is this
> > a problem at ARM?
> 
> No, it's not a problem for ARM, at least to my knowledge. It just struck me as 
> weird, as we have specific data types for other kinds of addresses (such as 
> dma_addr_t).

Okay, I looked at the definition and dma_addr_t seems like a good fit.
To be consistent we should change the iova type of the map/unmap
functions to dma_addr_t too.

Regards,

	Joerg

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