linux-kernel - Re: [PATCH] msm: iommu: Use relaxed register access functions

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Message-ID: <1300884647.6117.6.camel@m0nster>
Date:	Wed, 23 Mar 2011 05:50:47 -0700
From:	Daniel Walker <dwalker@...o99.com>
To:	Stepan Moskovchenko <stepanm@...eaurora.org>
Cc:	davidb@...eaurora.org, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] msm: iommu: Use relaxed register access functions

On Thu, 2011-03-17 at 13:01 -0700, Stepan Moskovchenko wrote:
> Use the relaxed versions of readl/writel for IOMMU register
> access, inserting barriers where appropriate.

Could you provide comments on why you need barriers in the various
places you've placed them.

Daniel

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