[PATCH 0/8] objtool vs retpoline

[Peter Zijlstra]

Hi,

Based on Alexandre's patches, here's a pile that goes on top of tip/objtool/core.

With these patches on objtool can completely understand retpolines and RSB
stuffing, which means it can emit valid ORC unwind information for them, which
in turn means we can now unwind through a retpoline.