On Mon, Jul 10, 2023 at 07:59:25PM -0700, Yi Liu wrote: > This adds ioctl for userspace to attach device cdev fd to and detach > from IOAS/hw_pagetable managed by iommufd. > > VFIO_DEVICE_ATTACH_IOMMUFD_PT: attach vfio device to IOAS or hw_pagetable > managed by iommufd. Attach can be undo > by VFIO_DEVICE_DETACH_IOMMUFD_PT or device > fd close. > VFIO_DEVICE_DETACH_IOMMUFD_PT: detach vfio device from the current attached > IOAS or hw_pagetable managed by iommufd. > > Tested-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > Tested-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx> > Tested-by: Yanting Jiang <yanting.jiang@xxxxxxxxx> > Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx> > Tested-by: Terrence Xu <terrence.xu@xxxxxxxxx> > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> > --- > drivers/vfio/device_cdev.c | 58 ++++++++++++++++++++++++++++++++++++++ > drivers/vfio/vfio.h | 5 ++++ > drivers/vfio/vfio_main.c | 15 +++++++++- > include/uapi/linux/vfio.h | 44 +++++++++++++++++++++++++++++ > 4 files changed, 121 insertions(+), 1 deletion(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
