[PATCH v3 2/8] elf: Add a tunable to control use of tagged memory

[H.J. Lu]

On Wed, Nov 25, 2020 at 9:49 AM Siddhesh Poyarekar <siddhesh@gotplt.org> wrote:
>
> On 11/25/20 10:54 PM, Richard Earnshaw wrote:
> > But that doesn't really address the issue that the scope of this feature
> > extends beyond just tuning.
>
> I think that's just a naming issue; it's going to be hard to avoid
> having tunables affect whole programs; I'm surprised that it's taken so
> long to discover a scenario where tunables end up modifying whole
> program behaviour rather than just the library.

glibc.cpu.x86_shstk and glibc.cpu.x86_ibt also affect the whole program.

> Maybe it deserves a top namespace for itself, e.g. proc.memtag so that
> it's clearer that it affects the entire process and not just glibc.
>
> Siddhesh



-- 
H.J.