Messages in this thread | | | Date | Mon, 2 Aug 2021 16:16:07 +0100 | From | Will Deacon <> | Subject | Re: [Patch V2 0/2] iommu/arm-smmu: Fix races in iommu domain/group creation |
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On Fri, Jun 18, 2021 at 02:00:35AM +0530, Ashish Mhetre wrote: > Multiple iommu domains and iommu groups are getting created for the devices > sharing same SID. It is expected for devices sharing same SID to be in same > iommu group and same iommu domain. > This is leading to context faults when one device is accessing IOVA from > other device which shouldn't be the case for devices sharing same SID. > Fix this by protecting iommu domain and iommu group creation with mutexes.
Robin -- any chance you could take a look at these, please? You had some comments on the first version which convinced me that they are needed, but I couldn't tell whether you wanted to solve this a different way or not.
Cheers,
Will
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