diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 1588012..b7c0d06 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1328,9 +1328,12 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
 {
 	int ret;
 
-	ret = do_cpu_up(cpu, tidle);
-	if (ret)
-		return ret;
+	/* If parallel AP bringup isn't enabled, perform the first steps now. */
+	if (!do_parallel_bringup) {
+		ret = do_cpu_up(cpu, tidle);
+		if (ret)
+			return ret;
+	}
 
 	ret = do_wait_cpu_initialized(cpu);
 	if (ret)
@@ -1352,6 +1355,12 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
 	return ret;
 }
 
+/* Bringup step one: Send INIT/SIPI to the target AP */
+static int native_cpu_kick(unsigned int cpu)
+{
+	return do_cpu_up(cpu, idle_thread_get(cpu));
+}
+
 /**
  * arch_disable_smp_support() - disables SMP support for x86 at runtime
  */
@@ -1542,6 +1551,10 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 	    boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
 		do_parallel_bringup = false;
 
+	if (do_parallel_bringup)
+		cpuhp_setup_state_nocalls(CPUHP_BP_PARALLEL_DYN, "x86/cpu:kick",
+					  native_cpu_kick, NULL);
+
 	snp_set_wakeup_secondary_cpu();
 }