This is a note to let you know that I've just added the patch titled x86/bugs: Do not use UNTRAIN_RET with IBPB on entry to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: x86-bugs-do-not-use-untrain_ret-with-ibpb-on-entry.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it.