Re: [PATCH 4/7 v2] pseries/iommu: implement DDW-aware dma_get_page_shift

2015-10-27 Thread Nishanth Aravamudan
On 27.10.2015 [16:56:10 +1100], Alexey Kardashevskiy wrote: > On 10/24/2015 07:59 AM, Nishanth Aravamudan wrote: > >When DDW (Dynamic DMA Windows) are present for a device, we have stored > >the TCE (Translation Control Entry) size in a special device tree > >property. Check if we have enabled DDW

Re: [PATCH 4/7 v2] pseries/iommu: implement DDW-aware dma_get_page_shift

2015-10-26 Thread Alexey Kardashevskiy
On 10/24/2015 07:59 AM, Nishanth Aravamudan wrote: When DDW (Dynamic DMA Windows) are present for a device, we have stored the TCE (Translation Control Entry) size in a special device tree property. Check if we have enabled DDW for the device and return the TCE size from that property if present.