Hi Ørjan,
On Thu, Apr 16, 2015 at 10:41 PM, Ørjan Eide wrote:
> arm_iommu_mmap_attrs() ignores the page offset in vma->vm_pgoff that was
> specified in the mmap call. Any user of dma_mmap_* will get an
> unexpected result when the device uses the IOMMU DMA ops.
>
> Some DRM driver that use dma_mm
arm_iommu_mmap_attrs() ignores the page offset in vma->vm_pgoff that was
specified in the mmap call. Any user of dma_mmap_* will get an
unexpected result when the device uses the IOMMU DMA ops.
Some DRM driver that use dma_mmap_* seems to depend on it ignoring
vma->vm_pgoff. Both the Samsung Exyn
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