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

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Tue, 2015-10-27 at 16:46 +0100, Samuel Thibault wrote:
> Wei Liu, le Tue 27 Oct 2015 15:43:28 +0000, a Ãcrit :
> > 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>

Applied.

> And it should clearly be backported to stable branches.

I don't think we have a mini-os branch for stable, but I'll let Ian J
figure out the right way to achieve this.

Ian


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