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Re: [Qemu-devel] [PATCH qemu 6/6] virtio-input: evdev passthrough


From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] [PATCH qemu 6/6] virtio-input: evdev passthrough
Date: Thu, 10 Apr 2014 18:16:14 +0300

On Thu, Apr 10, 2014 at 01:57:03PM +0200, Gerd Hoffmann wrote:
>   Hi,
> 
> > > +static void virtio_input_host_event(void *opaque)
> > > +{
> > > +    VirtIOInputHost *vhost = opaque;
> > 
> > I'd prefer a name that does not imply
> > vhost infrastructure
> 
> ok.
> 
> > > +    rc = ioctl(vhost->fd, EVIOCGVERSION, &ver);
> > > +    if (rc < 0) {
> > > +        error_setg(errp, "%s: is not an evdev device", vhost->evdev);
> > > +        goto err_close;
> > > +    }
> > 
> > Hmm is that all?
> > Don't we want to report versioning info to guests?
> 
> I guess the only thing we might want to here is bail out in case the
> major version is != 1 (which implies a incompatible change).  The major
> version didn't change so far though, and I think it is highly unlikely
> that it'll ever happen.
> 
> cheers,
>   Gerd

BTW this device should block migration, right?




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