1 files changed, 11 insertions, 0 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index 0fcf8ec1e098..5f8a5d84dbbe 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -706,6 +706,17 @@ config HAVE_ARCH_COMPAT_MMAP_BASES
           and vice-versa 32-bit applications to call 64-bit mmap().
           Required for applications doing different bitness syscalls.
 
+# This allows to use a set of generic functions to determine mmap base
+# address by giving priority to top-down scheme only if the process
+# is not in legacy mode (compat task, unlimited stack size or
+# sysctl_legacy_va_layout).
+# Architecture that selects this option can provide its own version of:
+# - STACK_RND_MASK
+config ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
+        bool
+        depends on MMU
+        select ARCH_HAS_ELF_RANDOMIZE
+
 config HAVE_COPY_THREAD_TLS
         bool
         help