netdev - Re: [PATCH 2/14] nes: device structures and defines

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Date:	Wed, 8 Aug 2007 09:57:30 -0700
From:	akepner@....com
To:	Roland Dreier <rdreier@...co.com>
Cc:	Michael Buesch <mb@...sch.de>, Jeff Garzik <jeff@...zik.org>,
	Andi Kleen <andi@...stfloor.org>, ggrundstrom@...effect.com,
	ewg@...ts.openfabrics.org, netdev@...r.kernel.org
Subject: Re: [PATCH 2/14] nes: device structures and defines

On Wed, Aug 08, 2007 at 09:46:16AM -0700, Roland Dreier wrote:

> ....
> Not mmiowb() -- that is for ordering between CPUs, eg on systems like
> Altix where PCI transactions might get reordered in the system fabric
> before reaching the PCI bus.
> 

Yes, that's right. This is a continual source of confusion. 
FWIW, Jesse Barnes documented mmiowb() in 
Documentation/DocBook/deviceiobook.tmpl 

-- 
Arthur

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