On 04/03/2013 06:17 PM, Simon Jeons wrote: > > e820 also contain mmio, correct? No. > So cpu should not access address beyond > e820 map(RAM+MMIO). No. -hpa -- 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>