On Wed, Sep 11, 2024 at 1:26 PM Zhenzhong Duan <zhenzhong.d...@intel.com> wrote: > > According to spec, Page-Selective-within-Domain Invalidation (11b): > > 1. IOTLB entries caching second-stage mappings (PGTT=010b) or pass-through > (PGTT=100b) mappings associated with the specified domain-id and the > input-address range are invalidated. > 2. IOTLB entries caching first-stage (PGTT=001b) or nested (PGTT=011b) > mapping associated with specified domain-id are invalidated. > > So per spec definition the Page-Selective-within-Domain Invalidation > needs to flush first stage and nested cached IOTLB enties as well. > > We don't support nested yet and pass-through mapping is never cached, > so what in iotlb cache are only first-stage and second-stage mappings. > > Add a tag pgtt in VTDIOTLBEntry to mark PGTT type of the mapping and > invalidate entries based on PGTT type. > > Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com> > Reviewed-by: Clément Mathieu--Drif<clement.mathieu--d...@eviden.com> > ---
Acked-by: Jason Wang <jasow...@redhat.com> Thanks
