diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 6663ffd23f25..61007663ab3f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -139,7 +139,8 @@ config ARM64
 	select DCACHE_WORD_ACCESS
 	select HAVE_EXTRA_IPI_TRACEPOINTS
 	select DYNAMIC_FTRACE if FUNCTION_TRACER
-	select DMA_BOUNCE_UNALIGNED_KMALLOC
+	# Disable this to save 64MB when DMA controllers can reach all of RAM
+	# select DMA_BOUNCE_UNALIGNED_KMALLOC
 	select DMA_DIRECT_REMAP
 	select EDAC_SUPPORT
 	select FRAME_POINTER