Instead provide a proper implementation in the direct mapping code, and
also wire it up for arm and powerpc, leaving an error return for all the
IOMMU or virtual mapping instances for which we'd have to wire up an
actual implementation
Signed-off-by: Christoph Hellwig
---
arch/arm/mm/dma-mapping
On Mon, Jan 14, 2019 at 01:12:33PM +, Robin Murphy wrote:
> Ignoring the offset was kind of intentional there, because at the time I
> was primarily thinking about it in terms of the Keystone 2 platform where
> the peripherals are all in the same place (0-2GB) in both the bus and CPU
> physi
On 11/01/2019 18:17, Christoph Hellwig wrote:
Just returning the physical address when not map_resource method is
present is highly dangerous as it doesn't take any offset in the
direct mapping into account and does the completely wrong thing for
IOMMUs. Instead provide a proper implementation i
Just returning the physical address when not map_resource method is
present is highly dangerous as it doesn't take any offset in the
direct mapping into account and does the completely wrong thing for
IOMMUs. Instead provide a proper implementation in the direct mapping
code, and also wire it up f
