On Mon, Jun 06, 2011 at 04:09:33PM -0400, Ohad Ben-Cohen wrote: > On Mon, Jun 6, 2011 at 10:20 PM, Roedel, Joerg <Joerg.Roedel@xxxxxxx> wrote: > > Well, it certainly makes sense to have a single implementation for this. > > But I want to hide this complexity to the user of the IOMMU-API. The > > best choice is to put this into the layer between the IOMMU-API and the > > backend implementation. > > I agree. > > The IOMMU API should take physically contiguous regions from the user, > split them up according to page-sizes (/alignment requirements) > supported by the hardware, and then tell the underlying implementation > what to map where. Yup. Btw, is there any IOMMU hardware which supports non-natural alignment? In this case we need to expose these requirements somehow. Regards, Joerg -- AMD Operating System Research Center Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach General Managers: Alberto Bozzo, Andrew Bowd Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
