> >> + /* Call panic for real */
> >> + while (1) {
> >> + unsigned long str_va = (unsigned long)__hyp_panic_string;
> >> +
> >> + str_va -= HYP_PAGE_OFFSET;
> >> + str_va += PAGE_OFFSET;
> >> + __hyp_do_panic(str_va,
> >> + spsr, elr,
> >> + read_sysreg(esr_el2), read_sysreg(far_el2),
> >> + read_sysreg(hpfar_el2), par,
> >> + read_sysreg(tpidr_el2));
> >> + }
> >> +}
> >
> > I think the while (1) here is confusing.
> >
> > Can we not jsut declare str_va at the start of the function and get rid
> > of the loop?
>
> The while(1) is to prevent GCC from screaming (it otherwise believes
> that the function actually returns, despite the __noreturn attribute).
Aha!
Perhaps a comment to that effect...?
> Or were you thinking of something else?
I just failed to derive the __noreturn problem from first principles.
Perhaps follow the __hyp_do_panic() call with an unreachable(), with the
comment as to GCC failing to reason about the __noreturn? That would be
less confusing than the loop, assuming that it works.
Mark.
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