[PATCH 0/7] Kernel Userspace Protection for radix

[Kees Cook]

On Thu, Feb 21, 2019 at 1:36 AM Russell Currey <ruscur at russell.cc> wrote:
> The first three patches of these series are from Christophe's work and are
> the bare minimum framework needed to implement the support for radix.
>
> In patch 3, I have removed from Christophe's patch my implementation of
> the 64-bit exception handling code, since we don't have an answer for
> making nested exceptions work yet.  This is mentioned in the final KUAP
> patch.  Regardless, this is still a significant security improvement
> and greatly narrows the attack surface.

Nice! Am I understanding correctly that with this series powerpc9 and
later, using radix, will pass the lkdtm tests for KUAP and KUEP (i.e.
EXEC_USERSPACE and ACCESS_USERSPACE)?

-- 
Kees Cook