[PATCH v2 0/9] iommu: Permit modular builds of ARM SMMU[v3] drivers

[Will Deacon]

Hi all,

This is version two of the patches I previously posted here:

  https://lore.kernel.org/lkml/20191030145112.19738-1-will@xxxxxxxxxx/

Changes since v1 include:

  * Build single "arm-smmu-mod.ko" module for the Arm SMMU driver
  * Hold a reference to the IOMMU driver module across {add,remove}_device()
  * Take a reference to the IOMMU driver module during of_xlate()
  * Added Bjorn's ack on the PCI export patch

Please note that I haven't been able to test this properly, since I don't
currently have access to any Arm SMMU hardware.

Cheers,

Will

Cc: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
Cc: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
Cc: John Garry <john.garry@xxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Saravana Kannan <saravanak@xxxxxxxxxx>
Cc: "Isaac J. Manjarres" <isaacm@xxxxxxxxxxxxxx>
Cc: Robin Murphy <robin.murphy@xxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>

--->8

Will Deacon (9):
  drivers/iommu: Export core IOMMU API symbols to permit modular drivers
  iommu/of: Request ACS from the PCI core when configuring IOMMU linkage
  PCI: Export pci_ats_disabled() as a GPL symbol to modules
  drivers/iommu: Take a ref to the IOMMU driver prior to ->add_device()
  iommu/of: Take a ref to the IOMMU driver during ->of_xlate()
  Revert "iommu/arm-smmu: Make arm-smmu-v3 explicitly non-modular"
  iommu/arm-smmu-v3: Allow building as a module
  Revert "iommu/arm-smmu: Make arm-smmu explicitly non-modular"
  iommu/arm-smmu: Allow building as a module

 drivers/iommu/Kconfig       | 16 ++++++-
 drivers/iommu/Makefile      |  3 +-
 drivers/iommu/arm-smmu-v3.c | 27 +++++++-----
 drivers/iommu/arm-smmu.c    | 87 ++++++++++++++++++++++---------------
 drivers/iommu/iommu-sysfs.c |  5 +++
 drivers/iommu/iommu.c       | 27 +++++++++++-
 drivers/iommu/of_iommu.c    | 17 +++++---
 drivers/pci/pci.c           |  1 +
 include/linux/iommu.h       |  2 +
 9 files changed, 130 insertions(+), 55 deletions(-)

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2.24.0.rc1.363.gb1bccd3e3d-goog