diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -637,6 +637,8 @@
 
 - Patchable function entry (``-fpatchable-function-entry``) is now supported
   on LoongArch.
+- Unaligned memory accesses can be toggled by ``-m[no-]unaligned-access`` or the
+  aliases ``-m[no-]strict-align``.
 
 RISC-V Support
 ^^^^^^^^^^^^^^
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -160,6 +160,8 @@
 --------------------------------
 
 * The ``lp64s`` ABI is supported now and has been tested on Rust bare-matal target.
+* An target feature ``ual`` is introduced to allow unaligned memory accesses and
+  this feature is enabled by default on generic 64bit processors.
 
 Changes to the MIPS Backend
 ---------------------------