On Mon, Feb 1, 2010 at 6:46 PM, Luca Barbieri <l...@luca-barbieri.com> wrote:
>> Idea is to mask all move which involve TT (AGP) with the agp_caching_mask,
>> it's easy to do in radeon ttm layer code and i believe it's easy to do
>> in nouveau
>> too. On non AGP you set agp_caching_mask to UC|WC|CACHED.
>
> Sure, but isn't that uglier and much more ad-hoc that the patch I proposed?
>

Your patch remove the consistency of caching attribute and make move btw
non fixed area different than others move, while driver can already achieve
so. As i said others change in ttm which wouldn't change consistency can
simplify the problem from the driver POV. I think it's better to avoid tweaking
core ttm to fix issue your driver can fix by using already existing
functionalities.
That's my feeling.

Cheers,
Jerome

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