Re: [PATCH 1/3] LoongArch: Add guess unwinder support

[Jinyang He]

Hi, Youling,

[...]
> > +unsigned long unwind_get_return_address(struct unwind_state *state)
> > +{
> > +    if (unwind_done(state))
> > +        return 0;
> This judgment can be removed, because unwind_done() has been judged
> before entering this function, and unwind_get_return_address will not
> be called if it is true.
These unwinder functions are exported by "EXPORT_SYMBOL_GPL".
What's more, new ways to use them will be added in the future possible.
Assuming has judged unwind_done is not reliable.

Thanks,
Jinyang