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Re: [Qemu-devel] [PATCH v3 11/13] Add vhost-user-input-pci

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH v3 11/13] Add vhost-user-input-pci
Date: Thu, 21 Feb 2019 10:25:10 +0100
User-agent: NeoMutt/20180716

On Fri, Feb 08, 2019 at 10:28:38AM -0500, Michael S. Tsirkin wrote:
> On Fri, Feb 08, 2019 at 12:23:55PM +0100, Marc-André Lureau wrote:
> > Add a new virtio-input device, which connects to a vhost-user
> > backend.
> > 
> > vhost-user-input is similar to virtio-input-host, it is wrapped by
> > vhost-user-input-pci. Instead of reading configuration directly from
> > an input device / evdev, it reads it over vhost-user protocol with
> > INPUT_GET_CONFIG message. Then vhost-user-backend takes care of
> > interfacing the virtio device with the backend, for the queue & events
> > processing.
> > 
> > Signed-off-by: Marc-André Lureau <address@hidden>
> Gerd what's your take on this? Do we want this functionality?

Yes, I think it makes sense.  Moving this to a separate process isn't
that useful for virtio-input, other devices like virtio-gpu will benefit
much more from it from a security and performance point of view.  It
still is useful for (a) testing the vhost-user infrastructure and (b) as
relatively simple example.


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