Signed-off-by: Xu Lu <luxu.kernel@bytedance.com>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 592eb5766029..9dfe95a12890 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -253,6 +253,7 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN
 # max bits determined by the following formula:
 #  VA_BITS - PAGE_SHIFT - 3
 config ARCH_MMAP_RND_BITS_MAX
+	default 20 if 64BIT && RISCV_64K_PAGES # SV39 based
 	default 24 if 64BIT # SV39 based
 	default 17
 
-- 
2.20.1