Re: [PATCH v7 13/14] iommu/arm-smmu-v3: Report events that belong to devices attached to vIOMMU
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2025-02-25 16:05:22
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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 <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(-)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Jason