[PATCH 4/5] drm/panfrost: Add support for GPU heap allocations

[Alyssa Rosenzweig]

> A fair bit of the complexity of kbase comes from trying to avoid the
> possibility of one process DoSing another by submitting malicious jobs.

...and yet it was still doable so easily (by accident, with buggy jobs
instead of malicious jobs).... sigh...

Still is on the mainline kernel (e.g. running dEQP in a window in
Weston, some faults triggered in dEQP end up messing up Weston's
rendering outside the deqp window). What's our threat model here?

Is "banning WebGL on Panfrost" allowed? :)