> >>
> >> Hi Jan,
> >>
> >> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg02233.html
> >>
> >> Is OK for trunk?
> >
> > I see that using register makes the problem go away and pushing address to 
> > stack
> > seemed bit odd anyway. However how does this work on other types of thunk?
> Kernel only uses  -mindirect-branch=thunk-extern.  I am working on a proposal
> to use -mindirect-branch=thunk-extern in user space to support CET in a single
> binary.  So at the end of the day, only
> -mindirect-branch=thunk-extern will be used.

OK, so it is about the fact that we do not really want to support all
-mindirect-branch options in the future? If we don't want to support the 
I wonder why we are including them at all.  Shall we at least output 
when user tries other thunk type with stack unwinding enabled?
(does Kernel use it?)

> -- 
> H.J.

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