We have some rather subtle code around zeroing tail entries, minimizing
cache bouncing. Let's put it all in one place.
Doing this also reduces the text size slightly, e.g. for
drivers/vhost/net.o
Before: text: 15,114 bytes
After: text: 15,082 bytes
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://patch.msgid.link/adb9d941de4a2b619ddb2be271a9939849e70687.1758690291.git.mst@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>