On Fri, May 11, 2012 at 04:55:35PM -0600, Alex Williamson wrote: > IOMMU groups allow IOMMU drivers to represent DMA visibility > and isolation of devices. Multiple devices may be grouped > together for the purposes of DMA. Placing a pointer on > struct device enable easy access for things like streaming > DMA programming and drivers like VFIO. > > Signed-off-by: Alex Williamson <alex.william...@redhat.com>
Can't you get this today from the iommu_ops pointer that is on the bus that the device is associated with? Or can devices on a bus have different iommu_group pointers? thanks, greg k-h
