On Sun, Mar 29, 2020 at 09:25:01PM -0700, Liu Yi L wrote: > Intel VT-d 3.0 introduces scalable mode, and it has a bunch of capabilities > related to scalable mode translation, thus there are multiple combinations. > While this vIOMMU implementation wants simplify it for user by providing > typical combinations. User could config it by "x-scalable-mode" option. The > usage is as below: > > "-device intel-iommu,x-scalable-mode=["legacy"|"modern"|"off"]" > > - "legacy": gives support for SL page table > - "modern": gives support for FL page table, pasid, virtual command > - "off": no scalable mode support > - if not configured, means no scalable mode support, if not proper > configured, will throw error > > Note: this patch is supposed to be merged when the whole vSVA patch series > were merged. > > Cc: Kevin Tian <kevin.tian@xxxxxxxxx> > Cc: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx> > Cc: Peter Xu <peterx@xxxxxxxxxx> > Cc: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx> > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > Cc: Richard Henderson <rth@xxxxxxxxxxx> > Cc: Eduardo Habkost <ehabkost@xxxxxxxxxx> > Signed-off-by: Liu Yi L <yi.l.liu@xxxxxxxxx> > Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx> Reviewed-by: Peter Xu <peterx@xxxxxxxxxx> -- Peter Xu
