> -----Original Message----- > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx] > Sent: Friday, May 08, 2015 3:22 PM > To: William Davis > Cc: joro@xxxxxxxxxx; jglisse@xxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx; iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; > John Hubbard; Terence Ripperda > Subject: Re: [PATCH 0/6] IOMMU/DMA map_resource support for peer-to-peer > > ... > > > > The Intel and nommu versions have been verified on a dual Intel Xeon E5405 > > workstation. I'm in the process of obtaining hardware to test the AMD version > > as well. Please review. > > Does it work if you boot with 'iommu=soft swiotlb=force' which will mandate > an strict usage of the DMA API? > This patch series doesn't yet add a SWIOTLB implementation, and so the dma_map_resource() call would return 0 to indicate the path is not implemented (see patch 2/6). So no, the new interfaces would not work with that configuration, but they're also not expected to at this point. Thanks, Will -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
