[PATCH v4 0/6] Add support for ACPI VIOT

[Eric Auger]

Hi Jean,

On 6/10/21 9:51 AM, Jean-Philippe Brucker wrote:
> Add a driver for the ACPI VIOT table, which provides topology
> information for para-virtual IOMMUs. Enable virtio-iommu on
> non-devicetree platforms, including x86.
>
> Since v3 [1] I fixed a build bug for !CONFIG_IOMMU_API. Joerg offered to
> take this series through the IOMMU tree, which requires Acks for patches
> 1-3.
>
> You can find a QEMU implementation at [2], with extra support for
> testing all VIOT nodes including MMIO-based endpoints and IOMMU.
> This series is at [3].
>
> [1] https://lore.kernel.org/linux-iommu/20210602154444.1077006-1-jean-philippe@linaro.org/
> [2] https://jpbrucker.net/git/qemu/log/?h=virtio-iommu/acpi
> [3] https://jpbrucker.net/git/linux/log/?h=virtio-iommu/acpi

I tested the series on both aarch64 and x86_64 with qemu. It works for me.
Feel free to add my T-b.

Tested-by: Eric Auger <eric.auger at redhat.com>

Thanks

Eric

>
>
> Jean-Philippe Brucker (6):
>   ACPI: arm64: Move DMA setup operations out of IORT
>   ACPI: Move IOMMU setup code out of IORT
>   ACPI: Add driver for the VIOT table
>   iommu/dma: Pass address limit rather than size to
>     iommu_setup_dma_ops()
>   iommu/dma: Simplify calls to iommu_setup_dma_ops()
>   iommu/virtio: Enable x86 support
>
>  drivers/acpi/Kconfig         |   3 +
>  drivers/iommu/Kconfig        |   4 +-
>  drivers/acpi/Makefile        |   2 +
>  drivers/acpi/arm64/Makefile  |   1 +
>  include/acpi/acpi_bus.h      |   3 +
>  include/linux/acpi.h         |   3 +
>  include/linux/acpi_iort.h    |  14 +-
>  include/linux/acpi_viot.h    |  19 ++
>  include/linux/dma-iommu.h    |   4 +-
>  arch/arm64/mm/dma-mapping.c  |   2 +-
>  drivers/acpi/arm64/dma.c     |  50 +++++
>  drivers/acpi/arm64/iort.c    | 129 ++-----------
>  drivers/acpi/bus.c           |   2 +
>  drivers/acpi/scan.c          |  78 +++++++-
>  drivers/acpi/viot.c          | 364 +++++++++++++++++++++++++++++++++++
>  drivers/iommu/amd/iommu.c    |   9 +-
>  drivers/iommu/dma-iommu.c    |  17 +-
>  drivers/iommu/intel/iommu.c  |  10 +-
>  drivers/iommu/virtio-iommu.c |   8 +
>  MAINTAINERS                  |   8 +
>  20 files changed, 580 insertions(+), 150 deletions(-)
>  create mode 100644 include/linux/acpi_viot.h
>  create mode 100644 drivers/acpi/arm64/dma.c
>  create mode 100644 drivers/acpi/viot.c
>