mdev_bus 1405 drivers/vfio/vfio_iommu_type1.c struct bus_type *mdev_bus; mdev_bus 1408 drivers/vfio/vfio_iommu_type1.c mdev_bus = symbol_get(mdev_bus_type); mdev_bus 1409 drivers/vfio/vfio_iommu_type1.c if (mdev_bus) { mdev_bus 1410 drivers/vfio/vfio_iommu_type1.c ret = (bus == mdev_bus);