From 0d69a65e97fc8090ee83c8639137b4b5c8ece237 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 2 Jul 2013 15:35:14 +0930
Subject: [PATCH] tools/lguest: real barriers.

Lguest guests are UP, but the host is probably SMP, so real barriers are
required in case the device thread and the guest are on different CPUs.

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