Re: [Qemu-devel] [PATCH v2 2/2] intel_iommu: Drop extended root field

2019-03-29 Thread Dr. David Alan Gilbert
* Peter Xu (pet...@redhat.com) wrote: > VTD_RTADDR_RTT is dropped even by the VT-d spec, so QEMU should > probably do the same thing (after all we never really implemented it). > Since we've had a field for that in the migration stream, to keep > compatibility we need to fill the hole up. > > Plea

Re: [Qemu-devel] [PATCH v2 2/2] intel_iommu: Drop extended root field

2019-03-28 Thread Liu, Yi L
> From: Peter Xu [mailto:pet...@redhat.com] > Sent: Friday, March 29, 2019 2:14 PM > To: qemu-devel@nongnu.org > Subject: [PATCH v2 2/2] intel_iommu: Drop extended root field > > VTD_RTADDR_RTT is dropped even by the VT-d spec, so QEMU should May be helpful to mention it is VT-d 3.0 which depreca

[Qemu-devel] [PATCH v2 2/2] intel_iommu: Drop extended root field

2019-03-28 Thread Peter Xu
VTD_RTADDR_RTT is dropped even by the VT-d spec, so QEMU should probably do the same thing (after all we never really implemented it). Since we've had a field for that in the migration stream, to keep compatibility we need to fill the hole up. Please refer to VT-d spec 10.4.6. Signed-off-by: Pete