On Mon, Sep 19, 2016 at 02:13:45PM +0200, Auger Eric wrote: > On 16/09/2016 18:18, Robin Murphy wrote: > > What I probably will do, though, since we have the functionality in > > place for the sake of the old binding, and I think there are other folks > > who want PCI iommu-map support but would prefer not to bother with DMA > > ops on the host, is add a command-line option to disable DMA domains > > even for the generic bindings. > > Yes this would be a good thing I think. This series has an important > impact on platforms which do not have smmu v3, where contexts are scarce > HW resources. Rather than disabling DMA domains entirely, we could specify a number of contexts to reserve for other use (e.g. VFIO). It's a pity that these options are global for the system, as opposed to per SMMU instance, but I can't see a good way around that. Will -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
