Hi everyone: arm64: SECTION_SIZE_BITS 30 -----1G The memory hotplug(add_memory -->check_hotplug_memory_range) must be aligned with section.So I can not add mem with 64M ... Can I modify the SECTION_SIZE_BITS to 26? Thanks, Xishi Qiu -- 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>