Re: [PATCH V2 net] Revert "vhost: cache used event for better performance"

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From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Thu, 27 Jul 2017 11:22:05 +0800

> This reverts commit 809ecb9bca6a9424ccd392d67e368160f8b76c92. Since it
> was reported to break vhost_net. We want to cache used event and use
> it to check for notification. The assumption was that guest won't move
> the event idx back, but this could happen in fact when 16 bit index
> wraps around after 64K entries.
> 
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

Applied, thanks.
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