On Fri, Oct 15, 2021 at 07:22:05PM +1100, Gavin Shan wrote: > It's possible that the empty NUMA nodes aren't referred by any CPUs, > as the following command line indicate. In this case, the empty NUMA > node IDs aren't existing in device-tree CPU nodes. So we still need > the distance-map.
Ah, indeed. > > However, I would like to drop this (PATCH[01/02]) in v4. The memory > hotplug through device-tree on ARM64 isn't existing. We might have > alternative ways to present the empty NUMA nodes when it's supported, > or we needn't it for ever because ACPI is enough to support the > memory hotplug. Agreed. Please update the commit message of 2/2 for v4 and also add a comment above the new code with the rationale for dropping those memory nodes. Thanks, drew
