On Wed, Apr 07, 2021 at 09:58:05AM +0800, Lu Baolu wrote: > I've ever tried to implement a bus iommu_ops for mdev devices. > > https://lore.kernel.org/lkml/20201030045809.957927-1-baolu.lu@xxxxxxxxxxxxxxx/ > > Any comments? You still have the symbol_get, so something continues to be wrong with that series: + mdev_bus = symbol_get(mdev_bus_type); + if (mdev_bus) { + if (bus == mdev_bus && !iommu_present(bus)) { + symbol_put(mdev_bus_type); Jason
