Hi Dave,
Could you please take this patch in your tree ?
On Sunday 02 March 2014 20:09:48 Laurent Pinchart wrote:
> The GEM CMA helpers uses a custom mmap implementation based on
> remap_pfn_range(). While this works when the buffer DMA and physical
> addresses are identical, it fails to take IOM
On Sun, Mar 2, 2014 at 8:09 PM, Laurent Pinchart
wrote:
> The GEM CMA helpers uses a custom mmap implementation based on
> remap_pfn_range(). While this works when the buffer DMA and physical
> addresses are identical, it fails to take IOMMU into account and tries
> to mmap the buffer to userspace
The GEM CMA helpers uses a custom mmap implementation based on
remap_pfn_range(). While this works when the buffer DMA and physical
addresses are identical, it fails to take IOMMU into account and tries
to mmap the buffer to userspace using the DMA virtual address instead of
the physical address. T
