[PATCH v7 13/14] iommu/arm-smmu-v3: Report events that belong to devices attached to vIOMMU

[Jason Gunthorpe]

On Sat, Feb 22, 2025 at 07:54:10AM -0800, Nicolin Chen wrote:
> Aside from the IOPF framework, iommufd provides an additional pathway to
> report hardware events, via the vEVENTQ of vIOMMU infrastructure.
> 
> Define an iommu_vevent_arm_smmuv3 uAPI structure, and report stage-1 events
> in the threaded IRQ handler. Also, add another four event record types that
> can be forwarded to a VM.
> 
> Reviewed-by: Kevin Tian <kevin.tian at intel.com>
> Signed-off-by: Nicolin Chen <nicolinc at nvidia.com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h   |  7 +++
>  include/uapi/linux/iommufd.h                  | 23 +++++++
>  .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c     | 17 ++++++
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   | 60 +++++++++++--------
>  4 files changed, 82 insertions(+), 25 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg at nvidia.com>

Jason