On Fri, May 29, 2020 at 02:00:47AM +0530, Kirti Wankhede wrote: > + * The sequence to be followed while in pre-copy state and stop-and-copy state > + * is as follows: > + * a. Read pending_bytes, indicating the start of a new iteration to get device > + * data. Repeated read on pending_bytes at this stage should have no side > + * effects. > + * If pending_bytes == 0, the user application should not iterate to get data > + * for that device. What if the device doesn't have any data yet but might have some later? This seems to say that if pending_bytes reads 0 the first time then this device doesn't support pre-copy at all.
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