Re: [PATCH V6 0/4 net-next] macvtap/vhost TX zero-copy support

[Michael S. Tsirkin]

On Thu, May 26, 2011 at 01:00:20PM -0700, Shirley Ma wrote:
> 3. Add sleep in vhost shutting down instead of busy-wait for outstanding
>    DMAs.

I still think this is not much better. We need to use a
completion structure and wait on it instead.
If this gets blocked thinkably a tx watchdog can fire and save us
from blocking forver :)
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