[PATCH 4.15 100/146] objtool, retpolines: Integrate objtool with retpoline support more closely

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Peter Zijlstra commit d5028ba8ee5a18c9d0bb926d883c28b370f89009 upstream. Disable retpoline validation in objtool if your compiler sucks, and otherwise select the

[PATCH 4.15 100/146] objtool, retpolines: Integrate objtool with retpoline support more closely

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Peter Zijlstra commit d5028ba8ee5a18c9d0bb926d883c28b370f89009 upstream. Disable retpoline validation in objtool if your compiler sucks, and otherwise select the validation stuff for