Messages in this thread | | | Date | Thu, 15 Jul 2021 09:48:13 -0300 | From | Jason Gunthorpe <> | Subject | Re: [RFC v2] /dev/iommu uAPI proposal |
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On Thu, Jul 15, 2021 at 06:49:54AM +0000, Tian, Kevin wrote:
> No. You are right on this case. I don't think there is a way to > differentiate one mdev from the other if they come from the > same parent and attached by the same guest process. In this > case the fault could be reported on either mdev (e.g. the first > matching one) to get it fixed in the guest.
If the IOMMU can't distinguish the two mdevs they are not isolated and would have to share a group. Since group sharing is not supported today this seems like a non-issue
Jason
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