On Wed, Oct 30, 2024 at 02:34:30PM -0700, Nicolin Chen wrote: > To support driver-allocated vIOMMU objects, it's required for IOMMU driver > to call the provided iommufd_viommu_alloc helper to embed the core struct. > However, there is no guarantee that every driver will call it and allocate > objects properly. > > Make the iommufd_object_finalize/abort functions more robust to verify if > the xarray slot indexed by the input obj->id is having an XA_ZERO_ENTRY, > which is the reserved value stored by xa_alloc via iommufd_object_alloc. > > Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > --- > drivers/iommu/iommufd/main.c | 16 +++++++++++----- > 1 file changed, 11 insertions(+), 5 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
