Re: [PATCH] [RFC] making uapi/linux/elfcore.h useful again

[Arnd Bergmann]

On Mon, Sep 17, 2018 at 5:05 AM Joseph Myers <joseph@xxxxxxxxxxxxxxxx> wrote:
>
> On Fri, 14 Sep 2018, Arnd Bergmann wrote:
>
> > +typedef unsigned long elf_greg_t;
>
> Does that need to be unsigned long long for x32?  (At least glibc thinks
> so; I've not tested what an x32 core dump actually looks like, but to be
> useful it certainly ought to have 64-bit registers.)

Yes, I think that's right. 'unsigned long' was correct inside of the kernel,
but copying it into a uapi header means we have to use '__kernel_ulong_t'
so it gets interpreted right by x32 user space.

          Arnd