diff --git a/Documentation/rust/general-information.rst b/Documentation/rust/general-information.rst
index 4bb6ac12d482..e3f388ef4ee4 100644
--- a/Documentation/rust/general-information.rst
+++ b/Documentation/rust/general-information.rst
@@ -7,6 +7,14 @@ This document contains useful information to know when working with
 the Rust support in the kernel.
 
 
+``no_std``
+----------
+
+The Rust support in the kernel can link only `core <https://doc.rust-lang.org/core/>`_,
+but not `std <https://doc.rust-lang.org/std/>`_. Crates for use in the
+kernel must opt into this behavior using the ``#![no_std]`` attribute.
+
+
 Code documentation
 ------------------