HI all, When a processor is in ring 0 (privilidged mode in x86), what can the program now do that it couldn't before ? which accesses are blocked by the processor if it is in ring 3 ? (I know that every interrupt has a minimum cpu priviledge needed, but I hardly assume programs are so "eager" to call interrupts, are they ? what other things aren't allowed ?) where can we see relevant code in the kernel ? thanks George -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
