[llvm-branch-commits] [llvm-branch] r326539 - Add some minimal release notes for retpoline support.

Chandler Carruth via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Thu Mar 1 21:48:38 PST 2018

Author: chandlerc
Date: Thu Mar  1 21:48:38 2018
New Revision: 326539

URL: http://llvm.org/viewvc/llvm-project?rev=326539&view=rev
Add some minimal release notes for retpoline support.


Modified: llvm/branches/release_60/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_60/docs/ReleaseNotes.rst?rev=326539&r1=326538&r2=326539&view=diff
--- llvm/branches/release_60/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_60/docs/ReleaseNotes.rst Thu Mar  1 21:48:38 2018
@@ -42,6 +42,12 @@ Non-comprehensive list of changes in thi
 * Preliminary support for Sanitizers and sibling features on X86(_64) NetBSD
   (ASan, UBsan, TSan, MSan, SafeStack, libFuzzer).
+* Support for `retpolines <https://support.google.com/faqs/answer/7625886>`_
+  was added to help mitigate "branch target injection" (variant #2) of the
+  "Spectre" speculative side channels described by `Project Zero
+  <https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html>`_
+  and the `Spectre paper <https://spectreattack.com/spectre.pdf>`_.
 Changes to the LLVM IR
@@ -183,6 +189,10 @@ During this release the X86 target has:
 * Improved documentation for SSE/AVX intrinsics in intrin.h header files.
+* Gained support for emitting `retpolines
+  <https://support.google.com/faqs/answer/7625886>`_, including automatic
+  insertion of the necessary thunks or using external thunks.
 External Open Source Projects Using LLVM 6

More information about the llvm-branch-commits mailing list