On Wednesday 24 June 2009, Marco Stornelli wrote: > > Actually, reading from /dev/mem is only valid on real RAM. If the nvram > > is part of an IO memory mapping, you have to do mmap()+memcpy() rather > > than read(). So dd won't do it, but it's still easy to read from user > > space. > > For "security" reasons pram reserve the region of memory with > reserve_mem_region_exclusive()..... That will only prevent other device drivers from stepping on it, /dev/mem does not care about mem_region reservations. Arnd <>< -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
