On Thu, Nov 29, 2018 at 08:59:31AM -0800, Andy Lutomirski wrote: > If you make it conditional on CPL, do it for 32-bit as well, add > comments,
> and convince yourself that there isn’t a better solution > (like pointing IP at a stub that retpolines to the target by reading > the function pointer, a la the unoptimizable version), then okay, I > guess, with only a small amount of grumbling. Right; so we _could_ grow the trampoline with a retpoline indirect call and ret. It just makes the trampoline a whole lot bigger, but it could work.
