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Date:   Mon, 4 Jan 2021 07:21:50 +0000
From:   Parav Pandit <parav@...dia.com>
To:     Jason Wang <jasowang@...hat.com>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>
CC:     "mst@...hat.com" <mst@...hat.com>, Eli Cohen <elic@...dia.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH linux-next v2 7/7] vdpa_sim_net: Add support for user
 supported devices



> From: Jason Wang <jasowang@...hat.com>
> Sent: Monday, January 4, 2021 12:35 PM
> 
> On 2021/1/4 上午11:31, Parav Pandit wrote:
> >   static int __init vdpasim_net_init(void)
> >   {
> >   	int ret = 0;
> > @@ -176,6 +264,8 @@ static int __init vdpasim_net_init(void)
> >
> >   	if (default_device)
> >   		ret = vdpasim_net_default_dev_register();
> > +	else
> > +		ret = vdpasim_net_mgmtdev_init();
> >   	return ret;
> >   }
> >
> > @@ -183,6 +273,8 @@ static void __exit vdpasim_net_exit(void)
> >   {
> >   	if (default_device)
> >   		vdpasim_net_default_dev_unregister();
> > +	else
> > +		vdpasim_net_mgmtdev_cleanup();
> >   }
> >
> >   module_init(vdpasim_net_init);
> > -- 2.26.2
> 
> 
> I wonder what's the value of keeping the default device that is out of the
> control of management API.

I think we can remove it like how I did in the v1 version. And actual vendor drivers like mlx5_vdpa will likely should do only user created devices.
I added only for backward compatibility purpose, but we can remove the default simulated vdpa net device.
What do you recommend?

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