Wei Liu writes ("[PATCH MINI-OS v2] xenbus: notify the other end when
necessary"):
> The xenbus thread didn't send notification to other end when it expected
> more data or consumed responses, which led to stalling the ring from
> time to time.
Thanks for investigating this. I haven't attempted to prove correct
(or incorrect) the ring handling after this patch.
But:
> This is the culprit that guest was less responsive when using stubdom
> because the device model was stalled.
ISTM with my stable tree maintainer hat on that this is a good
backport candidate.
Ian.
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