Re: [RFCv1 7/7] KVM: unmap guest memory using poisoned pages

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David Hildenbrand <david@xxxxxxxxxx> writes:

> I have no idea how expensive would be bouncing writes (and reads?)
> through the kernel. Did you ever experiment with that/evaluate that?

I would expect it to be quite expensive, as in virtio IO performance
tanking.

-Andi



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