[PATCH v2 6/7] drm/panfrost: Add support for GPU heap allocations

[Rob Herring]

On Tue, Jul 30, 2019 at 12:55 PM Alyssa Rosenzweig
<alyssa.rosenzweig at collabora.com> wrote:
>
> > In any case, per process AS is a prerequisite to all this.
>
> Oh, I hadn't realized that was still a todo. In the meantime, what's the
> implication of shipping without it? (I.e. in which threat model are
> users vulnerable without it?) Malicious userspace process snooping on
> other framebuffers (on X11, they could do that anyway...)? Malicious
> userspace actually interfering with operation of other processes (is
> this really exploitable or just a theoretical concern)? Malicious 3D
> apps breaking out of the sandbox (i.e. WebGL) via a driver bug and
> snooping on other processes?

I don't know. However, it's not that uncommon. freedreno is only now
in the process of supporting it. vc4 can't. v3d doesn't yet support
separate address spaces.

Rob