Messages in this thread | | | Date | Fri, 24 Jun 2022 15:19:43 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH v3 1/5] iommu: Return -EMEDIUMTYPE for incompatible domain and device/group |
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On Fri, Jun 24, 2022 at 06:35:49PM +0800, Yong Wu wrote:
> > > It's not used in VFIO context. "return 0" just satisfy the iommu > > > framework to go ahead. and yes, here we only allow the shared > > > "mapping-domain" (All the devices share a domain created > > > internally).
What part of the iommu framework is trying to attach a domain and wants to see success when the domain was not actually attached ?
> > What prevent this driver from being used in VFIO context? > > Nothing prevent this. Just I didn't test.
This is why it is wrong to return success here.
Jason
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