> From: Liu, Yi L <yi.l.liu@xxxxxxxxx> > Sent: Thursday, September 12, 2024 9:04 PM > > The iommu core is going to support domain replacement for pasid, it needs > to make the set_dev_pasid op support replacing domain and keep the old > domain config in the failure case. > > AMD iommu driver does not support domain replacement for pasid yet, so it > would fail the set_dev_pasid op to keep the old config if the input @old > is non-NULL. > > Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>