On Wed, Jan 17, 2018 at 05:48:57PM +0800, Xishi Qiu wrote: > > Did you notice an actual issue, or is this just theoretical concern. > > Yes, we have this problem on our production line. > I find the page table memory takes 200-300M. 200MB? That's mapping 800GB of virtual address space. That must be quite the module you're loading there ... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>