linux-kernel - Re: [RFC PATCH 28/33] Add Xen grant table support

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Message-Id: <af9f9eb1ed882cad53cbefdd1ae88c27@cl.cam.ac.uk>
Date:	Tue, 25 Jul 2006 19:45:51 +0100
From:	Keir Fraser <Keir.Fraser@...cam.ac.uk>
To:	Hollis Blanchard <hollisb@...ibm.com>
Cc:	virtualization@...ts.osdl.org,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	xen-devel@...ts.xensource.com, Ian Pratt <ian.pratt@...source.com>,
	linux-kernel@...r.kernel.org, Andrew Morton <akpm@...l.org>,
	xen-ppc-devel <xen-ppc-devel@...ts.xensource.com>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [RFC PATCH 28/33] Add Xen grant table support


On 25 Jul 2006, at 19:30, Hollis Blanchard wrote:

> I object to these uses of (synch_)cmpxchg on a uint16_t in common code.
> Many architectures, including PowerPC, do not support 2-byte atomic
> operations, but this code is common to all Xen architectures.

We'll use synch_cmpxchg_subword() in the next iteration of these 
patches. It's already been applied to our main Xen repository but 
hadn't been applied to our merge repo when these patches were created.

  -- Keir

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