linux-kernel - Re: [PATCH 1/2] vdpa: support set mac address from vdpa tool

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Message-ID: <CACLfguWhi9P2ZJwRYiqUDUeCdihQtFFth9OZugXgiisSMaVzqQ@mail.gmail.com>
Date: Wed, 19 Jun 2024 21:10:41 +0800
From: Cindy Lu <lulu@...hat.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: Jakub Kicinski <kuba@...nel.org>, Jiri Pirko <jiri@...nulli.us>, Parav Pandit <parav@...dia.com>, 
	Jason Wang <jasowang@...hat.com>, Dragos Tatulea <dtatulea@...dia.com>, 
	"virtualization@...ts.linux-foundation.org" <virtualization@...ts.linux-foundation.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>, 
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH 1/2] vdpa: support set mac address from vdpa tool

On Tue, Jun 18, 2024 at 6:39 PM Michael S. Tsirkin <mst@...hat.com> wrote:
>
> On Mon, Jun 17, 2024 at 09:44:21AM -0700, Jakub Kicinski wrote:
> > On Mon, 17 Jun 2024 12:20:19 -0400 Michael S. Tsirkin wrote:
> > > > But the virtio spec doesn't allow setting the MAC...
> > > > I'm probably just lost in the conversation but there's hypervisor side
> > > > and there is user/VM side, each of them already has an interface to set
> > > > the MAC. The MAC doesn't matter, but I want to make sure my mental model
> > > > matches reality in case we start duplicating too much..
> > >
> > > An obvious part of provisioning is specifying the config space
> > > of the device.
> >
> > Agreed, that part is obvious.
> > Please go ahead, I don't really care and you clearly don't have time
> > to explain.
>
> Thanks!
> Just in case Cindy who is working on it is also confused,
> here is what I meant:
>
> - an interface to provision a device, including its config
>   space, makes sense to me
> - default mac address is part of config space, and would thus be covered
> - note how this is different from ability to tweak the mac of an existing
>   device
>
Thanks Micheal, I will continue working in this
thanks
cindy
>
> --
> MST
>