Am Donnerstag, 19. Juni 2008 schrieb Rusty Russell: > We force notification when the ring is full, even if the host has > indicated it doesn't want to know. This seemed like a good idea at > the time: if we fill the transmit ring, we should tell the host > immediately. > > Unfortunately this logic also applies to the receiving ring, which is > refilled constantly. We should introduce real notification thesholds > to replace this logic. Meanwhile, removing the logic altogether breaks > the heuristics which KVM uses, so we use a hack: only notify if there are > outgoing parts of the new buffer.
I did not yet finish the VIRTIO_F_NOTIFY_ON_EMPTY implementation for s390, so I cant tell for sure if it makes a difference. Nevertheless, the patch looks good to me. _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
