Subject: thoughts stac/clac and get user for vhost

From: "Michael S. Tsirkin" <[email-masked]>
Date: Tue, 25 Dec 2018 11:41:13 -0500

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