diff --git a/arch/loongarch/mm/tlb.c b/arch/loongarch/mm/tlb.c
index eeb2d815cfa2..faf44cac403b 100644
--- a/arch/loongarch/mm/tlb.c
+++ b/arch/loongarch/mm/tlb.c
@@ -279,7 +279,7 @@ void setup_tlb_handler(int cpu)
 		/* Avoid lockdep warning */
 		rcu_cpu_starting(cpu);
 
-#ifdef CONFIG_NUMA
+#if defined(CONFIG_NUMA) && !defined(CONFIG_PREEMPT_RT)
 		vec_sz = sizeof(exception_handlers);
 
 		if (pcpu_handlers[cpu])