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Subject[PATCH 0/5] iommu/vt-d: Add page request draining support
When a PASID is stopped or terminated, there can be pending
PRQs (requests that haven't received responses) in remapping
hardware. VT-d driver must drain the pending page requests so
that the pasid could be reused. The register level interface
for page request draining is defined in 7.11 of the VT-d spec.
This series adds the support for page requests draining.

This functionality was mainly developed and tested by
Jacob Pan <>
Liu Yi L <>.
Thanks a lot.

Please help to review.

Best regards,

Jacob Pan (1):
iommu/vt-d: Add page request draining support

Lu Baolu (4):
iommu/vt-d: Add get_domain_info() helper
iommu/vt-d: Refactor parameters for qi_submit_sync()
iommu/vt-d: Multiple descriptors per qi_submit_sync()
iommu/vt-d: Refactor prq_event_thread()

drivers/iommu/dmar.c | 50 ++++---
drivers/iommu/intel-iommu.c | 38 +++--
drivers/iommu/intel-pasid.c | 16 +--
drivers/iommu/intel-svm.c | 207 ++++++++++++++++++++++++----
drivers/iommu/intel_irq_remapping.c | 2 +-
include/linux/intel-iommu.h | 9 +-
6 files changed, 258 insertions(+), 64 deletions(-)


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