On Wed, Aug 23, 2023, Sean Christopherson wrote: > One idea to make the original bug repro on every run would be to constantly > toggle nx_huge_pages between "off" and "force" while the guest is booting. Toggling > nx_huge_pages should force KVM to rebuild the SPTEs and all but guarantee trying > to deliver the #BP will hit a #NPF. Mwhahaha. That, plus a delay in the guest and disabling THP, makes this 100% reproducible. I'll verify the fix actually works before posting v2.
