On Fri, Mar 25, 2022, Paolo Bonzini wrote: > On 3/25/22 00:57, Sean Christopherson wrote: > > Can I have 1-2 weeks to try and root cause and fix the underlying issue before > > sending reverts to Linus? I really don't want to paper over a TLB flushing bug > > or an off-by-one bug, and I really, really don't want to end up with another > > scenario where KVM zaps everything just because. > > Well, too late... I didn't want to send a pull request that was broken, Ah, I didn't see that it was in the initial pull request, thought it was only in kvm/next. I'll send a full patch. > Mingwei provided a convincing reason for the breakage. No, the side effects are completely benign, and arguably desirable. The issue is that KVM loses a pending TLB flush if there are multiple roots.
