On Wed, Sep 23, 2020 at 01:15:33PM +0530, Ajay kumar wrote:
> Hello all,
> We pretty much tried to solve the same issue here with a new API in DMA-IOMMU:
> https://lore.kernel.org/linux-iommu/20200811054912.ga...@infradead.org/T/
> Christopher- the user part would be MFC devices on exynos platforms

I still think we:

 a) need to wire it up through the DMA API with an ops vector,
    and an error for devices not using dma-iommu
 b) submit it together with an actual users (like the series from Marek)
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