diff options
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index ea6adbf6a221..6d2a3a3666f0 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -1185,10 +1185,30 @@ static inline void add_cpu_to_smallcore_masks(int cpu) } } +int get_physical_package_id(int cpu) +{ + int pkg_id = cpu_to_chip_id(cpu); + + /* + * If the platform is PowerNV or Guest on KVM, ibm,chip-id is + * defined. Hence we would return the chip-id as the result of + * get_physical_package_id. + */ + if (pkg_id == -1 && firmware_has_feature(FW_FEATURE_LPAR) && + IS_ENABLED(CONFIG_PPC_SPLPAR)) { + struct device_node *np = of_get_cpu_node(cpu, NULL); + pkg_id = of_node_to_nid(np); + of_node_put(np); + } + + return pkg_id; +} +EXPORT_SYMBOL_GPL(get_physical_package_id); + static void add_cpu_to_masks(int cpu) { int first_thread = cpu_first_thread_sibling(cpu); - int chipid = cpu_to_chip_id(cpu); + int pkg_id = get_physical_package_id(cpu); int i; /* @@ -1217,11 +1237,11 @@ static void add_cpu_to_masks(int cpu) for_each_cpu(i, cpu_l2_cache_mask(cpu)) set_cpus_related(cpu, i, cpu_core_mask); - if (chipid == -1) + if (pkg_id == -1) return; for_each_cpu(i, cpu_online_mask) - if (cpu_to_chip_id(i) == chipid) + if (get_physical_package_id(i) == pkg_id) set_cpus_related(cpu, i, cpu_core_mask); } @@ -1359,11 +1379,6 @@ void __init smp_cpus_done(unsigned int max_cpus) if (smp_ops && smp_ops->bringup_done) smp_ops->bringup_done(); - /* - * On a shared LPAR, associativity needs to be requested. - * Hence, get numa topology before dumping cpu topology - */ - shared_proc_topology_init(); dump_numa_cpu_topology(); #ifdef CONFIG_SCHED_SMT |