Re: vmevent: question?

[Pekka Enberg]

On Thu, May 3, 2012 at 10:57 AM, Minchan Kim <minchan@xxxxxxxxxx> wrote:
> Sorry for my poor explanation.
> My point is when userspace get vmevent_event by reading fd, it could enumerate
> several attribute all at once.
> Then, one of attribute(call A) made by vmevent_match in kernel and other attributes(call B, C, D)
> are just extra for convenience. Because there is time gap when kernel get attribute values, B,C,D could be stale.
> Then, how can user determine which event is really triggered? A or B or C or D?
> Which event really happens?

Right. Mark the matching values with something like
VMEVENT_ATTR_STATE_CAPTURED should be sufficient?
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