mainline build failure of powerpc allmodconfig for prom_init_check
Sudip Mukherjee
sudipm.mukherjee at gmail.com
Mon Jul 18 06:38:17 AEST 2022
On Sun, Jul 17, 2022 at 9:29 PM Linus Torvalds
<torvalds at linux-foundation.org> wrote:
>
> On Sun, Jul 17, 2022 at 1:25 PM Sudip Mukherjee
> <sudipm.mukherjee at gmail.com> wrote:
> >
> > And the generated assembly still has the memset for "struct prom_args".
>
> Strange. That smells like a compiler bug to me.
Both gcc-12 and clang gives this error.
>
> But I can't read powerpc assembly code - it's been too many years, and
> even back when I did read it I hated how the register "names" worked.
>
> Maybe it was never the args array, and it was about the other fields.
> Not that that makes any sense either, but it makes more sense than the
> compiler turning a series of volatile accesses into a memset.
I have also tried adding volatile to all the members of that struct. :(
--
Regards
Sudip
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