diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 93e9393ea64a..da8f15ac7a6d 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -549,6 +549,8 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
 		this_cpu->c_early_init(c);
 
 	validate_pat_support(c);
+
+	c->cpu_index = boot_cpu_id;
 }
 
 void __init early_cpu_init(void)
diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index 01285af5782c..7f4c6af14351 100644
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/arch/x86/mach-voyager/voyager_smp.c
@@ -420,6 +420,7 @@ void __init smp_store_cpu_info(int id)
 	struct cpuinfo_x86 *c = &cpu_data(id);
 
 	*c = boot_cpu_data;
+	c->cpu_index = id;
 
 	identify_secondary_cpu(c);
 }