# Re: \[PATCH v19 22/25\] ELF: Introduce arch\_setup\_elf\_property()

- From: Kees Cook \<hidden\>
- Date: 2021-02-04 20:35:11 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2021/02/6259156
- Thread: https://ratatoskr.run/linux-doc/2021/02/6257763/t.md

```text
On Wed, Feb 03, 2021 at 02:55:44PM -0800, Yu-cheng Yu wrote:
> An ELF file's .note.gnu.property indicates arch features supported by the
> file.  These features are extracted by arch_parse_elf_property() and stored
> in 'arch_elf_state'.
> 
> Introduce x86 feature definitions and arch_setup_elf_property(), which
> enables such features.  The first use-case of this function is Shadow
> Stack.
> 
> ARM64 is the other arch that has ARCH_USE_GNU_PROPERTY and arch_parse_elf_
> property().  Add arch_setup_elf_property() for it.
> 
> Signed-off-by: Yu-cheng Yu <redacted>

Reviewed-by: Kees Cook <redacted>

-- 
Kees Cook
```