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Re: [Xen-devel] [PATCH][XEN] xenstore: make producer/consumer volatile

  • To: Christoph Egger <Christoph.Egger@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Mon, 28 Jul 2008 11:41:44 +0100
  • Cc:
  • Delivery-date: Mon, 28 Jul 2008 03:42:11 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acjwnob4xcwUqlyREd2NDAAX8io7RQ==
  • Thread-topic: [Xen-devel] [PATCH][XEN] xenstore: make producer/consumer volatile
On 28/7/08 10:21, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote:

> Hi!
> 
> Don't allow the compiler to play around with producer/consumer shared across
> domains.
> 
> Keir: Please apply this also to Xen 3.2-testing.
> 
> Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>

We don't use volatile. If extra ordering constraints are required then the
access code should be amended to include extra barriers.

 -- Keir



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