Hi Andrea, Is there a way you can think of to use userfaultfd without having a separate thread to sit there and be watching the file descriptor? The current model doesn't seem like it would be possible to use with a single-threaded app, for instance. Is there a reason we couldn't generate a signal and then have the userfaultfd handling done inside the signal handler? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>