[Intel-gfx] [PATCH 07/27] drm/i915/pxp: Add PXP-related registers into allowlist

[Chris Wilson]

Quoting Joonas Lahtinen (2020-11-16 10:33:07)
> Quoting Huang, Sean Z (2020-11-15 23:07:55)
> > Add several PXP-related reg into allowlist to allow
> > ring3 driver to read the those register values.
> 
> The individual registers need to be spelled out and their usage on the
> UMD side needs to be documented.

It's a huge block of registers that we need to manually verify for
mistakes. It also does not bode well for the userspace design as probing
so many through a single ioctl is going to be ratelimiting, nor why do
they need to check a entire kilobyte register file. Hence why the
userspace portion is essential to justify this as being the preferred
design.
-Chris