Displaying 2 results from an estimated 2 matches for "b6e5bbcc".
2018 May 30
0
[PATCH v3 2/2] drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
...toph come to an agreement
on what it should be?
Thierry
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2018 May 30
2
[PATCH v3 2/2] drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
On 30/05/18 09:03, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
>
> Depending on the kernel configuration, early ARM architecture setup code
> may have attached the GPU to a DMA/IOMMU mapping that transparently uses
> the IOMMU to back the DMA API. Tegra requires special handling for IOMMU
> backed buffers (a special bit in the GPU's MMU page