On Tue, Aug 09, 2016 at 05:31:35PM +0100, Robin Murphy wrote:
> Where a device driver has set a 64-bit DMA mask to indicate the absence
> of addressing limitations, we still need to ensure that we don't
> allocate IOVAs beyond the actual input size of the IOMMU. The reported
> aperture is the most
Where a device driver has set a 64-bit DMA mask to indicate the absence
of addressing limitations, we still need to ensure that we don't
allocate IOVAs beyond the actual input size of the IOMMU. The reported
aperture is the most reliable way we have of inferring that input
address size, so use that
