1 files changed, 8 insertions, 4 deletions

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 9e392a30d197..777c8d8bd5e7 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -528,10 +528,6 @@ setup_arch (char **cmdline_p)
 
 #ifdef CONFIG_SMP
         cpu_physical_id(0) = hard_smp_processor_id();
-
-        cpu_set(0, cpu_sibling_map[0]);
-        cpu_set(0, cpu_core_map[0]);
-
         check_for_logical_procs();
         if (smp_num_cpucores > 1)
                 printk(KERN_INFO
@@ -873,6 +869,14 @@ cpu_init (void)
         void *cpu_data;
 
         cpu_data = per_cpu_init();
+        /*
+         * insert boot cpu into sibling and core mapes
+         * (must be done after per_cpu area is setup)
+         */
+        if (smp_processor_id() == 0) {
+                cpu_set(0, per_cpu(cpu_sibling_map, 0));
+                cpu_set(0, cpu_core_map[0]);
+        }
 
         /*
          * We set ar.k3 so that assembly code in MCA handler can compute