Re: [patch 2/5] KVM: MMU: allow pinning spte translations (TDP-only)

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> >+ * Failure to instantiate pages will abort guest entry.
> >+ *
> >+ * Page frames should be pinned with get_page in advance.
> >+ *
> >+ * Pinning is not guaranteed while executing as L2 guest.
> 
> Does this undermine security?

It should not. In the worst case it'll randomly lose PEBS records.

-Andi
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