Srikar Dronamraju <sri...@linux.vnet.ibm.com> writes: > * Nathan Lynch <nath...@linux.ibm.com> [2019-08-22 12:17:48]: >> > However home node associativity requires cpu's hwid which is set in >> > smp_setup_pacas. Hence call smp_setup_pacas before numa_setup_cpus. >> >> But this seems like it would negatively affect pacas' NUMA placements? >> >> Would it be less risky to figure out a way to do "early" VPHN hcalls >> before mem_topology_setup, getting the hwids from the cpu_to_phys_id >> array perhaps? >> > > Do you mean for calls from mem_topology_setup(), stuff we use cpu_to_phys_id > but for the calls from ppc_numa_cpu_prepare() we use the > get_hard_smp_processor_id()?
Yes, something like that, I think. Although numa_setup_cpu() is used in both contexts.
