diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index ebd8ad274d76bb82488240e9543d7a1d99b5c674..199558b9462ebae1ba397d11f15412d68129f294 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -134,8 +134,11 @@ int __cpu_disable(void)
 	/*
 	 * Flush user cache and TLB mappings, and then remove this CPU
 	 * from the vm mask set of all processes.
+	 *
+	 * Caches are flushed to the Level of Unification Inner Shareable
+	 * to write-back dirty lines to unified caches shared by all CPUs.
 	 */
-	flush_cache_all();
+	flush_cache_louis();
 	local_flush_tlb_all();
 
 	clear_tasks_mm_cpumask(cpu);