Re: [PATCH v7 22/27] binfmt_elf: Extract .note.gnu.property from an ELF file

Peter Zijlstra
2019-06-18T12:57:02Z

On Tue, Jun 18, 2019 at 02:47:00PM +0200, Florian Weimer wrote:
> * Peter Zijlstra:
>
> > I'm not sure I read Thomas' comment like that. In my reading keeping the
> > PT_NOTE fallback is exactly one of those 'fly workarounds'. By not
> > supporting PT_NOTE only the 'fine' people already shit^Hpping this out
> > of tree are affected, and we don't have to care about them at all.
>
> Just to be clear here: There was an ABI document that required PT_NOTE
> parsing.

URGH.

> The Linux kernel does *not* define the x86-64 ABI, it only
> implements it. The authoritative source should be the ABI document.
>
> In this particularly case, so far anyone implementing this ABI extension
> tried to provide value by changing it, sometimes successfully. Which
> makes me wonder why we even bother to mainatain ABI documentation. The
> kernel is just very late to the party.

How can the kernel be late to the party if all of this is spinning
wheels without kernel support?