Messages in this thread | | | Date | Thu, 23 Jun 2022 11:38:34 +0800 | Subject | Re: [PATCH v3] iommu/vt-d: Make DMAR_UNITS_SUPPORTED a config setting | From | Baolu Lu <> |
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On 2022/6/23 10:51, Jerry Snitselaar wrote: >> The real problem here is that the iommu sequence ID overflows if >> DMAR_UNITS_SUPPORTED is not big enough. This is purely a software >> implementation issue, I am not sure whether user opt-in when building a >> kernel package could help a lot here. >> > Is this something that could be figured out when parsing the dmar > table? It looks like currently iommu_refcnt[], iommu_did[], and > dmar_seq_ids[] depend on it.
That's definitely a better solution.
Best regards, baolu
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