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* DMA-buf and uncached system memory
@ 2021-02-15  8:58 ` Christian König
  0 siblings, 0 replies; 80+ messages in thread
From: Christian König @ 2021-02-15  8:58 UTC (permalink / raw)
  To: linux-media, dri-devel, linaro-mm-sig, lkml
  Cc: Sumit Semwal, Daniel Vetter, Sharma, Shashank

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?

After all the system memory access pattern is a PCIe extension and as 
such something generic.

Regards,
Christian.

^ permalink raw reply	[flat|nested] 80+ messages in thread

end of thread, other threads:[~2022-08-10  5:56 UTC | newest]

Thread overview: 80+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-15  8:58 DMA-buf and uncached system memory Christian König
2021-02-15  8:58 ` Christian König
2021-02-15  9:06 ` Simon Ser
2021-02-15  9:06   ` Simon Ser
2021-02-15  9:34   ` Christian König
2021-02-15  9:34     ` Christian König
2021-02-15 11:53     ` Lucas Stach
2021-02-15 11:53       ` Lucas Stach
2021-02-15 12:04       ` Christian König
2021-02-15 12:04         ` Christian König
2021-02-15 12:16         ` Lucas Stach
2021-02-15 12:16           ` Lucas Stach
2021-02-15 12:25           ` Christian König
2021-02-15 12:25             ` Christian König
2021-02-15 14:41         ` David Laight
2021-02-15 14:41           ` David Laight
2021-02-15 14:54           ` [Linaro-mm-sig] " Christian König
2021-02-15 14:54             ` Christian König
2021-02-15  9:49 ` Thomas Zimmermann
2021-02-15  9:49   ` Thomas Zimmermann
2021-02-15 12:00   ` Thomas Zimmermann
2021-02-15 12:00     ` Thomas Zimmermann
2021-02-15 12:10     ` Christian König
2021-02-15 12:10       ` Christian König
2021-02-15 20:46       ` Nicolas Dufresne
2021-02-15 20:46         ` Nicolas Dufresne
2021-02-15 20:39 ` Nicolas Dufresne
2021-02-15 20:39   ` Nicolas Dufresne
2022-06-21 10:17   ` Andy.Hsieh
2022-06-21 10:34     ` Christian König
2022-06-21 15:42       ` Nicolas Dufresne
2022-06-21 15:42         ` Nicolas Dufresne
2022-06-22  9:05         ` [Linaro-mm-sig] " Christian König
2022-06-22  9:05           ` Christian König
2021-02-16  9:25 ` Daniel Vetter
2021-02-16  9:25   ` Daniel Vetter
2022-06-22 19:39   ` Nicolas Dufresne
2022-06-22 19:39     ` Nicolas Dufresne
2022-06-22 23:34     ` Daniel Stone
2022-06-22 23:34       ` Daniel Stone
2022-06-23  6:59       ` Christian König
2022-06-23  6:59         ` Christian König
2022-06-23  7:13         ` Pekka Paalanen
2022-06-23  7:13           ` Pekka Paalanen
2022-06-23  7:26           ` Christian König
2022-06-23  7:26             ` Christian König
2022-06-23  8:04             ` Lucas Stach
2022-06-23  8:14               ` Christian König
2022-06-23  8:58                 ` Lucas Stach
2022-06-23  9:09                   ` Christian König
2022-06-23  9:33                     ` Lucas Stach
2022-06-23  9:46                       ` Christian König
2022-06-23 10:13                         ` Lucas Stach
2022-06-23 11:10                           ` Christian König
2022-06-23 11:27                             ` Daniel Stone
2022-06-23 11:27                               ` Daniel Stone
2022-06-23 11:32                               ` Christian König
2022-06-23 11:32                                 ` Christian König
2022-06-24 22:02                                 ` [Linaro-mm-sig] " Daniel Vetter
2022-06-24 22:02                                   ` Daniel Vetter
2022-07-04 13:48                                   ` Christian König
2022-08-09 14:46                                     ` Daniel Vetter
2022-08-09 14:46                                       ` Daniel Vetter
2022-08-10  5:55                                       ` Christian König
2022-06-23 11:29                             ` Lucas Stach
2022-06-23 11:54                               ` Christian König
2022-06-23 12:14                                 ` Lucas Stach
2022-06-23 12:52                                   ` Christian König
2022-06-23 15:26                                     ` Lucas Stach
2022-06-24  6:54                                       ` Christian König
2022-06-24  8:10                                         ` Lucas Stach
2022-06-27 13:54                       ` Nicolas Dufresne
2022-06-27 14:06                         ` Lucas Stach
2022-06-27 14:30                           ` Nicolas Dufresne
2022-06-27 13:51                   ` Nicolas Dufresne
2022-06-23  8:13 ` Thomas Zimmermann
2022-06-23  8:26   ` Christian König
2022-06-23  8:42     ` Thomas Zimmermann
2022-08-09 15:01 ` Rob Clark
2022-08-09 15:01   ` Rob Clark

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