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Re: [Xen-devel] Re: new netfront and occasional receive path lockup

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: new netfront and occasional receive path lockup
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Tue, 14 Sep 2010 09:25:09 +0100
Cc: "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Gerald Turner <gturner@xxxxxxxxxx>
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On Mon, 2010-09-13 at 20:36 +0100, Jeremy Fitzhardinge wrote:
> On 09/13/2010 09:08 AM, Pasi Kärkkäinen wrote:
> > On Mon, Sep 13, 2010 at 09:01:57AM -0700, Gerald Turner wrote:
> >> Then I restarted all domUs with use_smartpoll=0 and haven't had any
> >> lockups in 7 hours.
> >>
> > I think we should default xen/stable-2.6.32.x to use_smartpoll=0 for the 
> > time being
> > until this is sorted out..
> 
> Agreed.

Should we also consider adding a netback option to disable it for the
system as a whole as well? Or are the issues strictly in-guest only?

Perhaps netback should support a xenstore key to allow a toolstack to
configure this property per guest?

Ian.


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