On Fri, Jul 28, 2023 at 06:20:56AM +0000, Tian, Kevin wrote: > But this does imply inconsistent behavior between success and failure. > Not sure whether it's worth a fix e.g. introducing another notifier for > mdev drivers to re-pin... After unmap drivers should re-establish their DMA mappings when they are next required. It is a mdev driver bug if they don't do this.. Jason