Hi Paolo, Currently I can trap every first write/read to a memory page from guest VM (add codes in tdp_page_fault). If I want to trace every memory access to a page, how can I achieve such goal in KVM? Thanks, Arthur -- Arthur Chunqi Li Department of Computer Science School of EECS Peking University Beijing, China -- 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