diff --git a/kernel/smp.c b/kernel/smp.c
index 704bfcd9caa..a5659525278 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -60,6 +60,7 @@ unsigned int z_smp_global_lock(void)
 
 	if (!_current->base.global_lock_count) {
 		while (!atomic_cas(&global_lock, 0, 1)) {
+			arch_spin_relax();
 		}
 	}