On Mon, Jan 09, 2017 at 11:48:11PM +0300, Nikita Yushchenko wrote: > Hi > > There is a use cases when architecture is 64-bit but hardware supports > only DMA to lower 4G of address space. E.g. NVMe device on RCar PCIe host.
The solution is to shoot the SOC designer. If that doesn't work use swiotlb.
