On Fri, 11 Apr 2014, Dave Hansen wrote: > > So? Who cares if there are non-addressable holes in part of the span? > > Ulrich, correct me if I'm wrong, but it seems you're looking for just a > > address-to-nodeid mapping (or pfn-to-nodeid mapping) and aren't actually > > expecting that there are no holes in a node for things like acpi or I/O or > > reserved memory. > ... > > I think trying to represent holes and handling different memory models and > > hotplug in special ways is complete overkill. > > This isn't just about memory hotplug or different memory models. There > are systems out there today, in production, that have layouts like this: > > |------Node0-----| > |------Node1-----| > > and this: > > |------Node0-----| > |-Node1-| >
What additional information, in your opinion, can we export to assist userspace in making this determination that $address is on $nid? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
