Christophe Leroy writes:
> diff --git a/arch/powerpc/include/asm/nohash/32/kup-8xx.h
> b/arch/powerpc/include/asm/nohash/32/kup-8xx.h
> new file mode 100644
> index ..a44cc6c1b901
> --- /dev/null
> +++ b/arch/powerpc/include/asm/nohash/32/kup-8xx.h
> @@ -0,0 +1,68 @@
> +/* SPDX-Licens
This patch adds Kernel Userspace Access Protection on the 8xx.
When a page is RO or RW, it is set RO or RW for Key 0 and NA
for Key 1.
Up to now, the User group is defined with Key 0 for both User and
Supervisor.
By changing the group to Key 0 for User and Key 1 for Supervisor,
this patch preven
