Re: [PATCH 0/5 v2] Fix NVMe driver support on Power with 32-bit DMA
From
Benjamin Herrenschmidt <>
Date
Sat, 03 Oct 2015 06:51:06 +1000
On Fri, 2015-10-02 at 13:09 -0700, Nishanth Aravamudan wrote:
> 1) add a generic dma_get_page_shift implementation that just returns > PAGE_SHIFT
So you chose to return the granularity of the iommu to the driver rather than providing a way for the driver to request a specific alignment for DMA mappings. Any specific reason ?