On Thu, Jun 04, 2026 at 04:40:31PM -0600, Paul Walmsley wrote:
> Hi,
>
> On Mon, 18 May 2026, Richard Patel wrote:
>
> > prctl(PR_SET_CFI,PR_CFI_BRANCH_LANDING_PADS) silently ignored
> > unknown control values. Only PR_CFI_{ENABLE,DISABLE,LOCK} should
> > be permitted.
> <
> > This is a uABI breaking change (fails previously accepted bits
> > with EINVAL).
>
> Thanks for the patch. However, I'm not convinced that this actually
> breaks anything. The behavior of the interface changes when unknown flags
> are specified, but I'm not aware of anything that relies on this specific
> behavior.
>
> Does that match your understanding?
I agree, yes, happy to rephrase the commit message.
