Re: [PATCH V6 0/4 net-next] macvtap/vhost TX zero-copy support
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2011-05-26 20:28:45
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kvm, lkml
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 :)