Re: [PATCH v2 0/3] Allow individual features to be locked down

[Nicolas Bouchinet]

Hi Nikolay,

After discussing with Xiu, we have decided not to accept this patchset.

The goal of Lockdown being to draw a clear line between ring-0 and uid-0,
having a more granular way to activate Lockdown will break it. Primarily
because most lockdown-reasons can be bypassed if used independently.

Even if the goal of Lockdown were to be redefined, we would need to ensure the
security interdependence between different lockdown-reasons. This is highly
tied to where people calls the `security_locked_down` hook and thus is out of
our maintenance scope.

Having coarse-grained lockdown reasons and integrity/confidentiality levels
allows us to ensure that all of the reasons are correctly locked down.

Best regards,

Nicolas