Sorry the answer is wrong again: Rene is right. There is no relationship between page fault and CLI. CLI will not disable PageFault, although pagefault can be triggered via "int 0x14" as it is vector 0x14 on the IDT, because Intel had classified this as "exception". And it mentioned explicitly that NMI + exception are not covered when the IF is cleared (which is what CLI does). What is the purpose of the IF flag then? (since it define the 0-31 range of interrupts that can be masked out - and pagefault is one of them, and yet it cannot be disabled/masked out) Really confusing....at least for me:-). -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ