> From: Liu, Yi L <yi.l.liu@xxxxxxxxx> > Sent: Tuesday, October 24, 2023 11:00 PM > > This adds the scalable mode check before allocating the nested parent > domain > as checking nested capability is not enough. User may turn off scalable mode > which also means no nested support even if the hardware supports it. > > Fixes: c97d1b20d383 ("iommu/vt-d: Add domain_alloc_user op") > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>