Re: [PATCH v4 21/30] KVM: x86/mmu: Zap invalidated roots via asynchronous worker

[Sean Christopherson]

On Thu, Mar 03, 2022, Paolo Bonzini wrote:
> The only issue is that kvm_tdp_mmu_invalidate_all_roots() now assumes that
> there is at least one reference in kvm->users_count; so if the VM is dying
> just go through the slow path, as there is nothing to gain by using the fast
> zapping.

This isn't actually implemented. :-)