On Mon, 28 Feb 2022 08:50:53 +0800 Lu Baolu <[email protected]> wrote:
> As DMA ownership is claimed for the iommu group when a VFIO group is > added to a VFIO container, the VFIO group viability is guaranteed as long > as group->container_users > 0. Remove those unnecessary group viability > checks which are only hit when group->container_users is not zero. > > The only remaining reference is in GROUP_GET_STATUS, which could be called > at any time when group fd is valid. Here we just replace the > vfio_group_viable() by directly calling IOMMU core to get viability status. > > Signed-off-by: Lu Baolu <[email protected]> > Reviewed-by: Jason Gunthorpe <[email protected]> > --- > drivers/vfio/vfio.c | 18 ++++++------------ > 1 file changed, 6 insertions(+), 12 deletions(-) Acked-by: Alex Williamson <[email protected]> _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
