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
Wei Liu, le Mon 26 Oct 2015 12:47:56 +, a écrit :
> -if (xenstore_buf->rsp_prod - xenstore_buf->rsp_cons <
> sizeof(msg))
> +if (xenstore_buf->rsp_prod - xenstore_buf->rsp_cons <
> sizeof(msg)) {
> +notify_remote_via_evtchn(start_info.store_evtchn);
>
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
