diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 71b197a2ad297b..a382c5e64ece60 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -448,6 +448,8 @@ RISC-V Support
 - Fixed incorrect ABI lowering of ``_Float16`` in the case of structs
   containing ``_Float16`` that are eligible for passing via GPR+FPR or
   FPR+FPR.
+- Removed support for ``__attribute__((interrupt("user")))``. User-level
+  interrupts are not in version 1.12 of the privileged specification.
 
 CUDA/HIP Language Changes
 ^^^^^^^^^^^^^^^^^^^^^^^^^