From 8fd9a6365eb8a79a2d8f0e0baa01f4db6345e8dd Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 2 Jul 2013 15:35:13 +0930
Subject: [PATCH] tools/lguest: fix missing rmb().

The virtio spec was missing a barrier in example code, so I went back
to look at the lguest code.  Indeed, we need one.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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