Re: [Xen-devel] [PATCH MINI-OS v3 1/2] xenbus: notify the other end when necessary

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Wei Liu, le Tue 27 Oct 2015 15:43:28 +0000, a écrit :
> 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.
> 
> This is the culprit that guest was less responsive when using stubdom
> because the device model was stalled.
> 
> Fix this by sending notification to the other end when it consumes a
> message. A bunch of memory barriers are also added to ensure
> correctness.
> 
> Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>

Acked-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>

And it should clearly be backported to stable branches.

Samuel

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