From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] host side todo list for virtio rdma
Date: Sat, 29 Jul 2017 02:48:33 +0300
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To: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: virtio@lists.oasis-open.org, virtio-dev@lists.oasis-open.org, linux-rdma@vger.kernel.org, qemu-devel@nongnu.org, Marcel Apfelbaum <marcel.a@redhat.com>
List-Id: linux-rdma@vger.kernel.org

On Fri, Jul 28, 2017 at 07:02:55PM +0100, Dr. David Alan Gilbert wrote:
> OK, does it seem silly for a message to go all the way to the host
> kernel to then have to go back down to QEMU to be turned back into verbs
> to go back upto the host kernel?

This is how most IO works except vhost.  If it's not a data path
there's no need to write code to avoid some context switches IMHO.

-- 
MST