Mark Kettenis <mark.kette...@xs4all.nl> wrote: > I'm not sure to what extent this makes IBT less effective. Can the > retpolines be used as gadgets to bypass IBT? Should we stop enabling > retpolines by default? > > What *is* obvious is that retpolines are incompatible wuth shadow > stacks. Is there an alternative that doesn't replace the indirect > branch with a return instruction?
It is clear however that both AMD and Intel have seperate (yet compatible) strategies to encourage you to buy newer chips.
