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authorNicolin Chen <nicolinc@nvidia.com>2025-07-24 15:10:01 -0700
committerJason Gunthorpe <jgg@nvidia.com>2025-07-28 12:07:50 -0300
commit5a1c7590939c3c5678b782d29f0ccfd1323a8d92 (patch)
treec2be91e765ddfd5fd052ca63ae8b1661fd74035a /tools/perf/util/scripting-engines/trace-event-python.c
parentab6bc44159d8f0c4ee757e0ce041fa9033e0ead8 (diff)
iommu/arm-smmu-v3: Do not bother impl_ops if IOMMU_VIOMMU_TYPE_ARM_SMMUV3
When viommu type is IOMMU_VIOMMU_TYPE_ARM_SMMUV3, always return or init the standard struct arm_vsmmu, instead of going through impl_ops that must have its own viommu type than the standard IOMMU_VIOMMU_TYPE_ARM_SMMUV3. Given that arm_vsmmu_init() is called after arm_smmu_get_viommu_size(), any unsupported viommu->type must be a corruption. And it must be a driver bug that its vsmmu_size and vsmmu_init ops aren't paired. Warn these two cases. Link: https://patch.msgid.link/r/20250724221002.1883034-2-nicolinc@nvidia.com Suggested-by: Will Deacon <will@kernel.org> Acked-by: Will Deacon <will@kernel.org> Reviewed-by: Pranjal Shrivastava <praan@google.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
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