Subject: Re: [PATCH RFC] virtio-net: remove useless disable on freeze

From: "Michael S. Tsirkin" <[email-masked]>
Date: Thu, 3 May 2012 14:08:45 +0300

On Thu, May 03, 2012 at 04:29:59PM +0530, Amit Shah wrote:
> On (Wed) 04 Apr 2012 [12:19:55], Michael S. Tsirkin wrote:
> > disable_cb is just an optimization: it
> > can not guarantee that there are no callbacks.
> 
> Even then, what's the harm in keeping it?  If indeed there's an
> attempt to raise an interrupt after the host has been notified, it
> will be suppressed.

It won't. It's not a guarantee, e.g. with event index on
it does nothing at all.

> Also, disable_cb seems to be used elsewhere in the virtio_net.c file,
> to suit similar purposes.
> 
> 		Amit

Where?