--- mp_x86.c	2022-01-20 18:48:29.163349000 +0700
+++ mp_x86.c	2022-01-20 18:51:14.654156000 +0700
@@ -1669,14 +1669,19 @@
 	uint32_t generation;
 	int cpu;
 
+#ifdef __i386__
+	sched_pin();
+#endif
+#ifdef __amd64__
+	KASSERT(curthread->td_pinned > 0, ("curthread not pinned"));
+#endif
+
 	/*
 	 * It is not necessary to signal other CPUs while booting or
 	 * when in the debugger.
 	 */
 	if (kdb_active || panicstr != NULL || !smp_started)
 		goto local_cb;
-
-	KASSERT(curthread->td_pinned > 0, ("curthread not pinned"));
 
 	/*
 	 * Check for other cpus.  Return if none.