Hello, On Wed, Aug 14, 2013 at 02:15:44PM -0400, KOSAKI Motohiro wrote: > I don't follow this. We need to think why memory hotplug is necessary. > Because system reboot is unacceptable on several critical services. Then, > if someone set wrong boot option, systems SHOULD fail to boot. At that time, > admin have a chance to fix their mistake. In the other hand, after running > production service, they have no chance to fix the mistake. In general, default > boot option should have a fallback and non-default option should not have a > fallback. That's a fundamental rule. The fundamental rule is that the system has to boot. Your argument is pointless as the kernel has no control over where its own image is placed w.r.t. hotpluggable nodes. So, are we gonna fail boot if kernel image intersects hotpluggable node and the option is specified even if memory hotplug can be used on other nodes? That doesn't make any sense. Failing to boot is *way* worse reporting mechanism than almost everything else. If the sysadmin is willing to risk machines failing to come up, she would definitely be willing to check whether which memory areas are actually hotpluggable too, right? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
