On Fri, Aug 26, 2022 at 08:11:31PM +0800, Lu Baolu wrote: > Allocate the blocking domain when probing devices if the driver supports > blocking domain allocation. Otherwise, revert to the previous behavior, > that is, use UNMANAGED domain instead when the blocking domain is needed. > > Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> > Tested-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx> > Tested-by: Tony Zhu <tony.zhu@xxxxxxxxx> > --- > drivers/iommu/iommu.c | 29 +++++++++++++++++------------ > 1 file changed, 17 insertions(+), 12 deletions(-) This seems like a lot of overhead to allocate these things for every group? Why not add a simple refcount on the blocking domain instead and allocate the domain on the pasid attach like we do for ownership? Jason
