Hi Christoph, On Thu, Sep 20, 2018 at 10:15 AM, Christoph Hellwig <[email protected]> wrote: > This reverts commit 6137e4166004e2ec383ac05d5ca15831f4668806. > > We explicitly clear GFP_HIGHMEM from the allowed dma flags at the beginning > of the function (and the generic dma_alloc_attr function calling us does the > same!), so this code just adds dead wood.
No, not really: dma_alloc_from_contiguous does not accept flags (only no_warn bit) and may return arbitrary pages. That's the case that this code is handling. -- Thanks. -- Max _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
