diff -drupN a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
--- a/arch/arm/kernel/smp.c	2018-08-06 17:23:04.000000000 +0300
+++ b/arch/arm/kernel/smp.c	2022-06-12 05:28:14.000000000 +0300
@@ -566,6 +566,9 @@ static void ipi_cpu_stop(unsigned int cp
 	local_fiq_disable();
 	local_irq_disable();
 
+#if defined(CONFIG_SUNXI_DUMP)
+	flush_cache_all();
+#endif
 	while (1)
 		cpu_relax();
 }