Messages in this thread | | | Date | Thu, 17 Jun 2021 12:06:56 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCHv2 8/8] videobuf2: handle non-contiguous DMA allocations |
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On Thu, Jun 17, 2021 at 06:40:58PM +0900, Tomasz Figa wrote: > Sorry, I meant dma_alloc_attrs() and yes, it's indeed a misnomer. Our > use case basically has no need for the additional coherent mapping, so > creation of it can be skipped to save some vmalloc space. (Yes, it > probably only matters for 32-bit architectures.)
Yes, that is the normal use case, and it is solved by using dma_alloc_noncoherent or dma_alloc_noncontigous without the vmap step.
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