> Unrelated note: I'd prefer to see that page be READ+EXEC only once it > has been mapped into the victim task. Obviously the portion of the code > that creates this page and sets up the instructions to run is going to > need write. Maybe this isn't feasible. Maybe this magic pages gets > written a lot even after it's been mapped in. But I'd rather, if > possible, know that my victim tasks didn't have a WRITE+EXEC page > available...... AIUI the page never really needs to be writable in the page tables. It's never written from user mode. It's only written by kernel code, and that can use a separate momentary kmap to do its writing. Thanks, Roland -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>