[PATCH 2/2] drm/amdgpu: Enable clear page functionality

[Christian König]

Am 08.12.23 um 20:53 schrieb Alex Deucher:
> [SNIP]
>> You also need a functionality which resets all cleared blocks to
>> uncleared after suspend/resume.
>>
>> No idea how to do this, maybe Alex knows of hand.
> Since the buffers are cleared on creation, is there actually anything to do?

Well exactly that's the problem, the buffers are no longer always 
cleared on creation with this patch.

Instead we clear on free, track which areas are cleared and clear only 
the ones which aren't cleared yet on creation.

So some cases need special handling. E.g. when the engine is not 
initialized yet or suspend/resume.

In theory after a suspend/resume cycle the VRAM is cleared to zeros, but 
in practice that's not always true.

Christian.

>
> Alex
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