On Tue, 2023-11-14 at 18:09 +0800, Zhenzhong Duan wrote: > Now we support two types of iommu backends, let's add the capability > to select one of them. This depends on whether an iommufd object has > been linked with the vfio-ccw device: > > If the user wants to use the legacy backend, it shall not > link the vfio-ccw device with any iommufd object: > > -device vfio-ccw,sysfsdev=/sys/bus/mdev/devices/XXX > > This is called the legacy mode/backend. > > If the user wants to use the iommufd backend (/dev/iommu) it > shall pass an iommufd object id in the vfio-ccw device options: > > -object iommufd,id=iommufd0 > -device vfio-ccw,sysfsdev=/sys/bus/mdev/devices/XXX,iommufd=iommufd0 > > Suggested-by: Alex Williamson <alex.william...@redhat.com> > Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com> > Reviewed-by: Matthew Rosato <mjros...@linux.ibm.com> > --- > hw/vfio/ccw.c | 6 ++++++ > 1 file changed, 6 insertions(+)
Reviewed-by: Eric Farman <far...@linux.ibm.com>
