On Tue, 23 Jun 2009 03:33:22 am Davide Libenzi wrote: > What you're doing there, is setting up a kernel-to-kernel (since > userspace only role is to create the eventfd) communication, using a file* > as accessory. That IMO is plain wrong. The most sensible is that userspace can use these fds; an in-kernel variant is possible too, but not primary IMHO. It's nice that userspace create the fds; it can then use the same fd for multiple event sources. But I didn't see anything wrong with the way eventfd used to work: you have a kvm ioctl to say "attach this eventfd to this guest notification" and that does the eventfd_fget. A detach ioctl does the fput (as does release of the kvm fd). If they close the eventfd and don't do the detach ioctl, it's their problem. Rusty. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html