linux-kernel - [PATCH 0/5] iommu/vt-d: Add page request draining support

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Date:   Tue, 17 Mar 2020 15:02:24 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     ashok.raj@...el.com, jacob.jun.pan@...ux.intel.com,
        Liu Yi L <yi.l.liu@...el.com>, kevin.tian@...el.com,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>
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 <jacob.jun.pan@...ux.intel.com>
	Liu Yi L <yi.l.liu@...el.com>.
Thanks a lot.

Please help to review.

Best regards,
baolu

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(-)

-- 
2.17.1