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Date:	Mon, 14 Jun 2010 09:35:59 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	catalin.marinas@....com
Cc:	npiggin@...e.de, hancockrwd@...il.com, tj@...nel.org,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	colin.tuckley@....com, jeff@...zik.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH v2] sata_sil24: Use memory barriers before issuing
 commands

On Fri, 11 Jun 2010 10:41:46 +0100
Catalin Marinas <catalin.marinas@....com> wrote:

> On Fri, 2010-06-11 at 02:38 +0100, Nick Piggin wrote:
> > On Thu, Jun 10, 2010 at 06:43:03PM -0600, Robert Hancock wrote:
> > > IMHO, it would be better for the platform code to ensure that MMIO
> > > access was strongly ordered with respect to each other and to RAM
> > > access. Drivers are just too likely to get this wrong, especially
> > > when x86, the most tested platform, doesn't have such issues.
> > 
> > The plan is to make all platforms do this. writes should be
> > strongly ordered with memory. That serves to keep them inside
> > critical sections as well.
> 
> Are there any public references to this discussion? Maybe a
> Documentation/ file (or update the memory-barriers.txt one would be
> useful).

I guess,

http://marc.info/?t=121185223900001&r=1&w=2
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