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Subject[PATCH v4 00/16] iommu: Permit modular builds of ARM SMMU[v3] drivers
Hi all,

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


Changes since v3 include:

* Based on v5.5-rc1
* ACPI/IORT support (thanks to Ard)
* Export pci_{enable,disable}_ats() (thanks to Greg)
* Added review tags

I tested this on AMD Seattle by loading arm-smmu-mod.ko from the initrd.



Cc: Jean-Philippe Brucker <>
Cc: Jordan Crouse <>
Cc: John Garry <>
Cc: Bjorn Helgaas <>
Cc: Saravana Kannan <>
Cc: Greg Kroah-Hartman <>
Cc: "Isaac J. Manjarres" <>
Cc: Robin Murphy <>
Cc: Lorenzo Pieralisi <>
Cc: Joerg Roedel <>
Cc: Ard Biesheuvel <>


Ard Biesheuvel (1):
iommu/arm-smmu: Support SMMU module probing from the IORT

Greg Kroah-Hartman (1):
PCI/ATS: Restore EXPORT_SYMBOL_GPL() for pci_{enable,disable}_ats()

Will Deacon (14):
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()
drivers/iommu: Allow IOMMU bus ops to be unregistered
Revert "iommu/arm-smmu: Make arm-smmu-v3 explicitly non-modular"
Revert "iommu/arm-smmu: Make arm-smmu explicitly non-modular"
iommu/arm-smmu: Prevent forced unbinding of Arm SMMU drivers
iommu/arm-smmu-v3: Unregister IOMMU and bus ops on device removal
iommu/arm-smmu-v3: Allow building as a module
iommu/arm-smmu: Unregister IOMMU and bus ops on device removal
iommu/arm-smmu: Allow building as a module
iommu/arm-smmu: Update my email address in MODULE_AUTHOR()

drivers/acpi/arm64/iort.c | 4 +-
drivers/iommu/Kconfig | 16 ++++-
drivers/iommu/Makefile | 3 +-
drivers/iommu/arm-smmu-v3.c | 94 +++++++++++++++++---------
drivers/iommu/arm-smmu.c | 128 +++++++++++++++++++++++++-----------
drivers/iommu/iommu-sysfs.c | 5 ++
drivers/iommu/iommu.c | 32 ++++++++-
drivers/iommu/of_iommu.c | 19 ++++--
drivers/pci/ats.c | 2 +
drivers/pci/pci.c | 1 +
include/linux/iommu.h | 4 +-
11 files changed, 223 insertions(+), 85 deletions(-)


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