Quoth Mike Frysinger: > while some processors lack an MMU, then do not lack an MPU (memory > protection unit). for example, the Blackfin processor has an MPU which > means the Blackfin Linux port can (and does) prevent user space from > accessing peripherals. we can (and have an experimental/in-development > patch) also protect processes from other processes and kernel space > from user space, but the overhead here seems to be noticeable since the > hardware table can only contain 16 entries.
Many Coldfire CPUs also support memory protection, although last time I checked the kernel didn't enforce it. _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
