Michael Bringmann <mwb@xxxxxxxxxxxxxxxxxx> writes: > When adding or removing memory, the aa_index (affinity value) for the > memblock must also be converted to match the endianness of the rest > of the 'ibm,dynamic-memory' property. Otherwise, subsequent retrieval > of the attribute will likely lead to non-existent nodes, followed by > using the default node in the code inappropriately. > > Note: This is a bug that we would likely want to see fixed in stable > circa v4.1+. I merged this a week ago: https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-June/158426.html It was annotated: Fixes: 5f97b2a0d176 ("powerpc/pseries: Implement memory hotplug add in the kernel") Cc: stable@xxxxxxxxxxxxxxx # v4.1+ cheers