From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: thoughts stac/clac and get user for vhost
Date: Tue, 25 Dec 2018 11:41:13 -0500
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To: Jason Wang <jasowang@redhat.com>
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Hi!
I was just wondering: packed ring batches things naturally.
E.g.

user_access_begin
check descriptor valid
smp_rmb
copy descriptor
user_access_end

So packed layout should show the gain with this approach.
That could be motivation enough to finally enable vhost packed ring
support.

Thoughts?

-- 
MST