netdev - Re: [PATCH 1/3] xen-netback: make feature-rx-notify mandatory

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Message-ID: <20141023113206.GF9188@zion.uk.xensource.com>
Date:	Thu, 23 Oct 2014 12:32:06 +0100
From:	Wei Liu <wei.liu2@...rix.com>
To:	David Vrabel <david.vrabel@...rix.com>
CC:	<netdev@...r.kernel.org>, <xen-devel@...ts.xenproject.org>,
	Ian Campbell <ian.campbell@...rix.com>,
	Wei Liu <wei.liu2@...rix.com>
Subject: Re: [PATCH 1/3] xen-netback: make feature-rx-notify mandatory

On Thu, Oct 23, 2014 at 12:16:29PM +0100, Wei Liu wrote:
> On Wed, Oct 22, 2014 at 02:08:53PM +0100, David Vrabel wrote:
> > Frontends that do not provide feature-rx-notify may stall because
> > netback depends on the notification from frontend to wake the guest Rx
> > thread (even if can_queue is false).
> > 
> > This could be fixed but feature-rx-notify was introduced in 2006 and I
> > am not aware of any frontends that do not implement this.
> > 
> > Signed-off-by: David Vrabel <david.vrabel@...rix.com>
> 
> Acked-by: Wei Liu <wei.liu2@...rix.com>

While I can understand this patch by itself, can you elaborate a little
bit on how it affects later patches? Because what I'm thinking is that
this patch is not for stable while other two should go to stable.

Wei.
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