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2018 Apr 25
1
[PATCH v2 5/5] ARM: Unconditionally enable ARM_DMA_USE_IOMMU
...n the scatterlist,
and not every machine supports the splitting of the DMA length from
the non-DMA length member. Hence, this will cause a regression,
sorry.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up
According to speedtest.net: 8.21Mbps down 510kbps up
2018 Jul 02
1
[PATCH v4 1/2] ARM: dma-mapping: Set proper DMA ops in arm_iommu_detach_device()
On Wed, May 30, 2018 at 04:06:24PM +0200, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
>
> Instead of setting the DMA ops pointer to NULL, set the correct,
> non-IOMMU ops depending on the device's coherency setting.
>
> Signed-off-by: Thierry Reding <treding at nvidia.com>
> ---
> Changes in v4:
> - new patch to fix existing
2018 Apr 25
11
[PATCH v2 1/5] drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
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 tables indicates the
memory path to take: via the SMMU or directly to the