> From: Peter Xu <pet...@redhat.com> > Sent: Tuesday, July 7, 2020 4:58 AM > > On Sat, Jul 04, 2020 at 01:07:15AM -0700, Liu Yi L wrote: > > In chapter 10.4.23 of VT-d spec 3.0, Descriptor Width bit was > > introduced in VTD_IQA_REG. Sfotware could set this bit to tell VT-d > > the QI descriptor from software would be 256 bits. Accordingly, the > > VTD_IQH_QH_SHIFT should be 5 when descriptor size is 256 bits. > > > > This patch adds the DW bit check when deciding the shift used to > > update VTD_IQH_REG. > > > > Signed-off-by: Liu Yi L <yi.l....@intel.com> > > Reviewed-by: Peter Xu <pet...@redhat.com>
thanks. Regards, Yi Liu
