[Mesa-dev] [PATCH v3 0/2] nouveau: support for custom VRAM domains

[Martin Peres]

On 19/06/2015 13:02, Alexandre Courbot wrote:
> New revision of this patchset that prevents VRAM objects from being
> allocated on VRAM-less systems like Tegra. This is required for Mesa
> to work on such systems.
>
> Changes since v2:
> - Use vram_size to detect systems without VRAM and set the correct
>    domain instead of expecting each chip to set its domain explicitly.

This question may have been asked a ton of times, but what is the 
difference with the nvac (Ion)?

Would the nvac have some reserved memory for its usage by the bios which 
would then be used as "VRAM"?

In any case, the patchseries sounds simple-enough to be maintainable.