[v2,0/8] iommu: Add PASID support to Arm SMMUv3

Message

Jean-Philippe Brucker Nov. 8, 2019, 3:25 p.m. UTC

This is version 2 of the series I sent a while ago [1], adding PASID
support to the Arm SMMUv3 driver.

Changes since v1:
* Dropped the patch adding auxiliary domain support. It's an easy way to
  test PASID, by populating PASID contexts using iommu_map/unmap(), but
  I don't know if it will ever have real users. 

  Since v1 I changed my testing gear, and am using the zip accelerator
  [2] instead of a software model. It only uses SVA and testing
  auxiliary domains would require additional changes that would never go
  upstream. SVA requires another 20 patches (including I/O page faults)
  that I will send later, but at least I know that this will get used.

* ioasid patch has been carried by Jacob and should be merged for v5.5 [3]

* Split patch "Add support for Substream IDs" into patches 4 and 5.

* Added IORT support (patch 3) and addressed other comments.

[1] https://lore.kernel.org/linux-iommu/[e-mail]/
[2] https://lore.kernel.org/linux-iommu/[e-mail]/
[3] https://lore.kernel.org/linux-iommu/[e-mail]/ 

Jean-Philippe Brucker (8):
  dt-bindings: document PASID property for IOMMU masters
  iommu/arm-smmu-v3: Support platform SSID
  ACPI/IORT: Support PASID for platform devices
  iommu/arm-smmu-v3: Prepare for SSID support
  iommu/arm-smmu-v3: Add support for Substream IDs
  iommu/arm-smmu-v3: Add second level of context descriptor table
  iommu/arm-smmu-v3: Improve add_device() error handling
  iommu/arm-smmu-v3: Add support for PCI PASID

 .../devicetree/bindings/iommu/iommu.txt       |   6 +
 drivers/acpi/arm64/iort.c                     |  18 +
 drivers/iommu/arm-smmu-v3.c                   | 442 +++++++++++++++---
 drivers/iommu/of_iommu.c                      |   6 +-
 include/linux/iommu.h                         |   2 +
 5 files changed, 419 insertions(+), 55 deletions(-)

Comments

Zhangfei Gao Nov. 12, 2019, 10:02 a.m. UTC | #1

On 2019/11/8 下午11:25, Jean-Philippe Brucker wrote:
> This is version 2 of the series I sent a while ago [1], adding PASID
> support to the Arm SMMUv3 driver.
>
> Changes since v1:
> * Dropped the patch adding auxiliary domain support. It's an easy way to
>    test PASID, by populating PASID contexts using iommu_map/unmap(), but
>    I don't know if it will ever have real users.
>
>    Since v1 I changed my testing gear, and am using the zip accelerator
>    [2] instead of a software model. It only uses SVA and testing
>    auxiliary domains would require additional changes that would never go
>    upstream. SVA requires another 20 patches (including I/O page faults)
>    that I will send later, but at least I know that this will get used.
>
> * ioasid patch has been carried by Jacob and should be merged for v5.5 [3]
>
> * Split patch "Add support for Substream IDs" into patches 4 and 5.
>
> * Added IORT support (patch 3) and addressed other comments.
>
> [1] https://lore.kernel.org/linux-iommu/[e-mail]/
> [2] https://lore.kernel.org/linux-iommu/[e-mail]/
> [3] https://lore.kernel.org/linux-iommu/[e-mail]/
>
> Jean-Philippe Brucker (8):
>    dt-bindings: document PASID property for IOMMU masters
>    iommu/arm-smmu-v3: Support platform SSID
>    ACPI/IORT: Support PASID for platform devices
>    iommu/arm-smmu-v3: Prepare for SSID support
>    iommu/arm-smmu-v3: Add support for Substream IDs
>    iommu/arm-smmu-v3: Add second level of context descriptor table
>    iommu/arm-smmu-v3: Improve add_device() error handling
>    iommu/arm-smmu-v3: Add support for PCI PASID
Thanks Jean for the patch
The series tested well on Hisilicon platform KunPeng920
Tested-by: Zhangfei Gao <[e-mail]>