Re: [Xen-devel] domU and dom0 hung with Xen console interrupt binding showing in-flight=1, (---M)

[Bruce Edge <bruce.edge@xxxxxxxxx>]

On Thu, Aug 19, 2010 at 8:48 AM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:

On 19/08/2010 14:42, "Bruce Edge" <bruce.edge@xxxxxxxxx> wrote:

> Is there any more information that I can provide that would be helpful in
> diagnosing the direct cause and the appropriate fix?
> Possibly adding instrumentation or trace code to detect the trigger
> conditions?
> This is very repeatable on our target systems after a few hours of load.

You can try the attached Xen patch which should clear out the in-flight
interrupt after a short timeout. It might kick things back into action, and
is probably a fix we should have in the tree anyhow.

 -- Keir

Thanks Kier, this patch definitely works.

It's running on 2 machines under load, well past where they consistently have failed in the past.

-Bruce

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