On Tue, Feb 25, 2025 at 09:25:41AM -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>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Pranjal Shrivastavat <praan@google.com>
Signed-off-by: Nicolin Chen <redacted>
---
 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(-)

Apologies for my spelling error in [1]. It's supposed to be:

Reviewed-by: Pranjal Shrivastava <praan@google.com>

Correct spelling in [2].

Thanks,
Praan

[1] https://lore.kernel.org/all/Z73zvIbsXzJMCaNt@google.com/ (local)
[2] https://lore.kernel.org/all/Z730M3XptvDRObBp@google.com/ (local)