On Wed, Feb 06, 2019 at 02:08:33PM -0800, Guenter Roeck wrote: > On Fri, Feb 01, 2019 at 02:28:26PM +0100, Thierry Reding wrote: > > If we use the IOMMU API directly to map buffers into host1x' IOVA space, > > we must make sure that the DMA API doesn't already set up a mapping, or > > else translation will fail. > > > > The direct DMA API allows us to allocate memory that will not be mapped > > through an IOMMU automatically. > > > > Reviewed-by: Dmitry Osipenko <dig...@gmail.com> > > Signed-off-by: Thierry Reding <tred...@nvidia.com> > > arm64:defconfig: > > ERROR: "dma_direct_free" [drivers/gpu/host1x/host1x.ko] undefined! > ERROR: "dma_direct_alloc" [drivers/gpu/host1x/host1x.ko] undefined!
Hi Guenter, I sent out a fix to export dma_direct_alloc() and dma_direct_free() but Christoph preferred not to merge that, so I'm currently working on a different solution for this. I hope to have a fix for this by the end of the day, but if not I'll back out the above commit. Thanks, Thierry
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