netdev - Re: [PATCH] pch_gbe: Adding read memory barriers

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Message-ID: <1336577956.8274.364.camel@deadeye>
Date:	Wed, 9 May 2012 16:39:16 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Erwan Velu <erwanaliasr1@...il.com>
CC:	David Laight <David.Laight@...lab.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <tshimizu818@...il.com>
Subject: Re: [PATCH] pch_gbe: Adding read memory barriers

On Wed, 2012-05-09 at 17:20 +0200, Erwan Velu wrote:
> Thanks for this very clear description.

It might be clear, but it's not very relevant: you need to understand
the Linux kernel barrier APIs (which cover all architectures).  See
Documentation/memory-barriers.txt.

> As I'm pretty new to this kind of integration in the kernel, do you
> request me to test this volatile option ?
> Does the patch tends to be rejected for this issue ?
> What should be the next step for my patch ?
[...]

Explain what kind of reordering you are trying to avoid.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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