On Wed, Jun 14, 2017 at 05:08:02PM +0200, Paolo Bonzini wrote: > > > On 06/06/2017 20:19, Roman Kagan wrote: > > + sint_route->msg_status = ret; > > + /* notify the msg originator of the progress made; if the slot was > > busy we > > + * set msg_pending flag in it so it will be the guest who will do EOM > > and > > + * trigger the notification from KVM via sint_ack_notifier */ > > + if (ret != -EAGAIN) { > > + qemu_bh_schedule(sint_route->msg_bh); > > + } > > It may be faster to use aio_bh_schedule_oneshot, depending on the number > of devices.
Messages aren't used on fast paths, they are only exchanged at device setup/teardown. So I cared more about readability than speed here. Thanks, Roman.