https://news.ycombinator.com/item?id=43067347 :

Still hoping for SR-IOV in retail GPUs.

Not sure about vCPU functionality in GPUs

Process isolation on vCPUs with or without SR-IOV is probably not as advanced as secure enclave approaches

[Which just fell to post-spectre side channels]

> Is there sufficient process isolation in GPUs?

/? Sr-iov iommu: https://www.google.com/search?q=sr-iov+iommu

Is there branch prediction in GPUs? What about other side channels between insufficiently-isolated GPU processes?

I see that vgpu_unlock no longer works for technical reasons.