[PATCH 1/2] drm/amdgpu: access stolen VRAM directly on KV/KB

deathsimple@xxxxxxxxxxx (Christian König) · Mon, 7 Nov 2016 10:33:46 +0100

Am 07.11.2016 um 10:29 schrieb Michel DÃ¤nzer:
> On 07/11/16 06:21 PM, Christian KÃ¶nig wrote:
>> From: Christian KÃ¶nig <christian.koenig at amd.com>
>>
>> We don't need to use the PCI BAR on APUs. This allows us to access
>> the full VRAM directly without being limited by the BAR size.
>>
>> Signed-off-by: Christian KÃ¶nig <christian.koenig at amd.com>
> The series is
>
> Reviewed-by: Michel DÃ¤nzer <michel.daenzer at amd.com>
>
>
> We could also drop the HDP flushes / invalidates in this case, right?
Could be, but I'm not 100% sure how those are actually wired up on APUs.

Might be that they are NOPs anyway, but could be that at least the 
flushes are still vital.

Regards,
Christian.