Shuo A Liu d624eb5e6c hv: io: do schedule in IO completion polling loop ...

Now, we support schedule inplace. And with cpu sharing, there might be
multi vcpu running on same pcpu. Reschedule request will happen when
switch the running vcpu. If the current vcpu is polling on the IO
completion, it need to be scheduled back to the polling point.

In the polling path, construct a loop for polling, and do schedule in the
loop if needed.

Tracked-On: #4178
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

2019-12-05 11:19:35 +08:00

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