Am 23.06.22 um 10:13 schrieb Thomas Zimmermann:
Hi Christian
Am 15.02.21 um 09:58 schrieb Christian König:
Hi guys,
we are currently working an Freesync and direct scan out from system
memory on AMD APUs in A+A laptops.
On problem we stumbled over is that our display hardware needs to
scan out from uncached system memory and we currently don't have a
way to communicate that through DMA-buf.
For our specific use case at hand we are going to implement something
driver specific, but the question is should we have something more
generic for this?
I had a patchset here that extends iosys-map (former dma-buf-map) with
caching information. I'll post a copy.
Oh, nice. But why on iosys-map? We need that per DMA-buf.
Thanks,
Christian.
Sorry for being late to reply.
Best regards
Thomas
After all the system memory access pattern is a PCIe extension and as
such something generic.
Regards,
Christian.
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