diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index f2f72ef..32863b3 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -116,6 +116,8 @@
 #define smt_capable() 				(smp_num_siblings > 1)
 #endif
 
+extern void arch_fix_phys_package_id(int num, u32 slot);
+
 #define pcibus_to_cpumask(bus)	(pcibus_to_node(bus) == -1 ? \
 					CPU_MASK_ALL : \
 					node_to_cpumask(pcibus_to_node(bus)) \
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index 0e6d6b0..4f35a0f 100644
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -193,6 +193,10 @@
 #define topology_thread_siblings(cpu)		(per_cpu(cpu_sibling_map, cpu))
 #endif
 
+static inline void arch_fix_phys_package_id(int num, u32 slot)
+{
+}
+
 struct pci_bus;
 void set_pci_bus_resources_arch_default(struct pci_bus *b);