Madhavan Srinivasan [off-list ref] writes:

+#define IMC_MAX_CHIPS			32
+#define IMC_MAX_PMUS			32

The max chips and PMUs we'd be able to work out from the device tre
though, right? We could just allocate the correct amount of memory on
boot.

We may hot plug/unplug CPUs, but we're not doing that from a hardware
level, what CPUs you get in the DT on PowerNV on boot is all you're
getting.

-- 
Stewart Smith
OPAL Architect, IBM.