> From: Peter Xu < peterx@xxxxxxxxxx> > Sent: Friday, April 3, 2020 10:49 PM > To: Liu, Yi L <yi.l.liu@xxxxxxxxx> > Subject: Re: [PATCH v2 22/22] intel_iommu: modify x-scalable-mode to be string > option > > 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> thanks for your help. :-) Regards, Yi Liu
