> From: Nicolin Chen <nicolinc@xxxxxxxxxx> > Sent: Friday, June 24, 2022 4:00 AM > > Un-inline the domain specific logic from the attach/detach_group ops into > two paired functions vfio_iommu_alloc_attach_domain() and > vfio_iommu_detach_destroy_domain() that strictly deal with creating and > destroying struct vfio_domains. > > Add the logic to check for EMEDIUMTYPE return code of > iommu_attach_group() > and avoid the extra domain allocations and attach/detach sequences of the > old code. This allows properly detecting an actual attach error, like > -ENOMEM, vs treating all attach errors as an incompatible domain. > > Co-developed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
