[mannyv]

I suppose with unified memory there's no real difference between the kernel and userspace; it's just different security zones.

The MMU era used separate memory spaces to enforce security, but it's probably safer in the log run to actually have secure areas instead of 'accidentslly secure areas" that aren't that secure.

[dcrazy]

I think you’re misunderstanding “unified memory”. That term refers to whether the GPU has its own onboard memory chips which must be populated by a DMA transfer. It doesn’t refer to whether the system has an MMU.