* Skip cache sync for GEM CMA objects?
@ 2015-07-08 21:51 Steve Longerbeam
0 siblings, 0 replies; 2+ messages in thread
From: Steve Longerbeam @ 2015-07-08 21:51 UTC (permalink / raw)
To: DRI mailing list
Hi all,
GEM CMA uses dma_alloc_writecombine() when allocating the CMA objects.
So IINM the GEM buffers are cache coherent. So is there any reason why
DMA_ATTR_SKIP_CPU_SYNC is not passed to dma_map_sg() when GEM CMA
prepares the buffer for dma on behalf of the dma-buf user? Is this just an
oversight or is there something I have missed?
Thanks,
Steve
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dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
* Skip cache sync for GEM CMA objects?
@ 2015-07-08 21:51 Steve Longerbeam
0 siblings, 0 replies; 2+ messages in thread
From: Steve Longerbeam @ 2015-07-08 21:51 UTC (permalink / raw)
To: DRI mailing list
Hi all,
GEM CMA uses dma_alloc_writecombine() when allocating the CMA objects.
So IINM the GEM buffers are cache coherent. So is there any reason why
DMA_ATTR_SKIP_CPU_SYNC is not passed to dma_map_sg() when GEM CMA
prepares the buffer for dma on behalf of the dma-buf user? Is this just an
oversight or is there something I have missed?
Thanks,
Steve
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
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