Hi Yaohui,

Yes, there is a flag associated both with the used and the avail rings to
disable notifications.  This can be used to implement polling.

There have been multiple research projects/papers that have experimented
with polling.

Regards,

Anthony Liguori


On Fri, Sep 27, 2013 at 1:56 PM, Hu Yaohui <loki2...@gmail.com> wrote:

> Hi All,
> I am wondering whether virtio has provided polling mode already. Instead
> of sending a event from guest to host through eventfd on guest side and
> inject an interrupt into guest on host side to notify each other? Could
> both sides keep polling the Vring to communicate with each other?
> Thanks for your time!
>
> Best Wishes,
> Yaohui
>

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