Re: [PATCH v3 7/7] iommu/vt-d: Disable multiple GPASID-dev bind

2020-07-02 Thread Auger Eric
Hi Jacob, On 7/1/20 5:33 PM, Jacob Pan wrote: > For the unlikely use case where multiple aux domains from the same pdev > are attached to a single guest and then bound to a single process > (thus same PASID) within that guest, we cannot easily support this case > by refcounting the number of

[PATCH v3 7/7] iommu/vt-d: Disable multiple GPASID-dev bind

2020-07-01 Thread Jacob Pan
For the unlikely use case where multiple aux domains from the same pdev are attached to a single guest and then bound to a single process (thus same PASID) within that guest, we cannot easily support this case by refcounting the number of users. As there is only one SL page table per PASID while