On Sun, Apr 22, 2012 at 3:54 PM, Michael S. Tsirkin wrote:
> During normal operation, virtio host first writes a used index
> and then checks whether it should interrupt the guest
> by reading guest avail flag/used event index values.
> Guest does the reverse: writes the index/flag,
> then checks
During normal operation, virtio host first writes a used index
and then checks whether it should interrupt the guest
by reading guest avail flag/used event index values.
Guest does the reverse: writes the index/flag,
then checks the used ring.
The ordering is important: if host avail flag read byp
