Hi, Now that Juergen's paravirt rework, which included the negative alternative stuff, landed in tip, here's a respin of my retpoline patches.
The main feature is replacing the compiler generated (tail) calls to __x86_indirect_thunk_\reg with an ALTERNATIVE that replaces them with regular indirect call instructions, eliding the double jump. Patches rely on tip/objtool/core and tip/x86/alternatives
