linux-kernel - [PATCH v6 0/5] iommu aux-domain APIs extensions

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Date:   Fri, 30 Oct 2020 12:58:04 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>,
        Alex Williamson <alex.williamson@...hat.com>
Cc:     Robin Murphy <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Cornelia Huck <cohuck@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Liu Yi L <yi.l.liu@...el.com>, Zeng Xin <xin.zeng@...el.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH v6 0/5] iommu aux-domain APIs extensions

Hi Joerg and Alex,

A description of purpose for this series could be found here.

https://lore.kernel.org/linux-iommu/20200901033422.22249-1-baolu.lu@linux.intel.com/

The previous version was posted here.

https://lore.kernel.org/linux-iommu/20200922061042.31633-1-baolu.lu@linux.intel.com/

This version is evolved according to Joerg's comments posted here.

https://lore.kernel.org/linux-iommu/20200924095532.GK27174@8bytes.org/

This basic idea is that IOMMU registers an iommu_ops for subdevice
bus (for example, the vfio/mdev bus), so that the upper layer device
passthrough framework could use the standard iommu-core code to setup
the IOMMU logistics.

This series was tested by Dave Jiang <dave.jiang@...el.com> with his
idxd driver posted here. Very appreciated!

https://lore.kernel.org/lkml/160021250454.67751.3119489448651243709.stgit@djiang5-desk3.ch.intel.com/

Please help to review and comment.

Best regards,
baolu

Lu Baolu (5):
  vfio/mdev: Register mdev bus earlier during boot
  iommu: Use bus iommu ops for aux related callback
  iommu/vt-d: Make some static functions global
  iommu/vt-d: Add iommu_ops support for subdevice bus
  vfio/type1: Use mdev bus iommu_ops for IOMMU callbacks

 drivers/iommu/intel/Kconfig      |  13 ++++
 drivers/iommu/intel/Makefile     |   1 +
 drivers/iommu/intel/iommu.c      |  79 +++++--------------
 drivers/iommu/intel/siov.c       | 119 ++++++++++++++++++++++++++++
 drivers/iommu/iommu.c            |  16 ++--
 drivers/vfio/mdev/mdev_core.c    |  22 +-----
 drivers/vfio/mdev/mdev_driver.c  |   6 ++
 drivers/vfio/mdev/mdev_private.h |   1 -
 drivers/vfio/vfio_iommu_type1.c  | 128 +++----------------------------
 include/linux/intel-iommu.h      |  53 +++++++++++++
 include/linux/mdev.h             |  14 ----
 11 files changed, 236 insertions(+), 216 deletions(-)
 create mode 100644 drivers/iommu/intel/siov.c

-- 
2.25.1