On Thu, Nov 11, 2010 at 01:47:21PM +0000, Stefan Hajnoczi wrote: > Some virtio devices are known to have guest drivers which expect a notify to > be > processed synchronously and spin waiting for completion. Only enable > ioeventfd > for virtio-blk and virtio-net for now.
Who guarantees that less common virtio-blk and virtio-net guest drivers for non-Linux OSes are fine with it? Maybe you should add a feature flag that the guest has to ACK to enable it.