On Tue, 25 Oct 2016 11:36:48 -0400 Alexander Duyck <alexander.h.duyck@xxxxxxxxx> wrote: > The first 22 patches in the set add support for the DMA attribute > DMA_ATTR_SKIP_CPU_SYNC on multiple platforms/architectures. This is needed > so that we can flag the calls to dma_map/unmap_page so that we do not > invalidate cache lines that do not currently belong to the device. Instead > we have to take care of this in the driver via a call to > sync_single_range_for_cpu prior to freeing the Rx page. > > Patch 23 adds support for dma_map_page_attrs and dma_unmap_page_attrs so > that we can unmap and map a page using the DMA_ATTR_SKIP_CPU_SYNC > attribute. > > Patch 24 adds support for freeing a page that has multiple references being > held by a single caller. This way we can free page fragments that were > allocated by a given driver. > > The last 3 patches use these updates in the igb driver to allow for us to > reimpelement the use of build_skb. > > My hope is to get the series accepted into the net-next tree as I have a > number of other Intel drivers I could then begin updating once these > patches are accepted. > > v1: Split out changes DMA_ERROR_CODE fix for swiotlb-xen > Minor fixes based on issues found by kernel build bot > Few minor changes for issues found on code review > Added Acked-by for patches that were acked and not changed I really appreciate you are doing this work Alex, thanks! And I do think it fits into my page pool plans. Thanks! -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>