From 8dd014adfea6f173c1ef6378f7e5e7924866c923 Mon Sep 17 00:00:00 2001
From: David Stevens <dlstevens@us.ibm.com>
Date: Tue, 27 Jul 2010 18:52:21 +0300
Subject: [PATCH] vhost-net: mergeable buffers support

This adds support for mergeable buffers in vhost-net: this is needed
for older guests without indirect buffer support, as well
as for zero copy with some devices.

Includes changes by Michael S. Tsirkin to make the
patch as low risk as possible (i.e., close to no changes
when feature is disabled).

Signed-off-by: David Stevens <dlstevens@us.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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