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

Jason Gunthorpe
2025-02-25T16:05:22Z

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@intel.com>
> Signed-off-by: Nicolin Chen <nicolinc@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@nvidia.com>

Jason