"Private Data" field has been removed from Page Request/Response in
Intel VT-d specification revision 4.0.

Since the private data field has been removed, it's fine to remove the
entire private data handling from the driver as the specification
has been deprecated and Intel hasn't shipped any products which
support private data in the page request message.

Jingqi Liu (2):
  iommu/vt-d: Remove debugfs use of private data field
  iommu/vt-d: Remove private data use in fault message

 drivers/iommu/intel/debugfs.c |  7 ---
 drivers/iommu/intel/iommu.h   |  1 -
 drivers/iommu/intel/perf.h    |  1 -
 drivers/iommu/intel/svm.c     | 84 +++++++----------------------------
 include/linux/iommu.h         |  3 +-
 5 files changed, 16 insertions(+), 80 deletions(-)

-- 
2.21.3

On 3/8/24 6:38 PM, Jingqi Liu wrote:
> "Private Data" field has been removed from Page Request/Response in
> Intel VT-d specification revision 4.0.
> 
> Since the private data field has been removed, it's fine to remove the
> entire private data handling from the driver as the specification
> has been deprecated and Intel hasn't shipped any products which
> support private data in the page request message.
> 
> Jingqi Liu (2):
>    iommu/vt-d: Remove debugfs use of private data field
>    iommu/vt-d: Remove private data use in fault message

Patches have been queued for iommu/vt-d.

Best regards,
baolu