Revert "KVM: X86: Update mmu->pdptrs only when it is changed"
This reverts commit 24cd19a2. Sean Christopherson reports: "Commit 24cd19a2 ('KVM: X86: Update mmu->pdptrs only when it is changed') breaks nested VMs with EPT in L0 and PAE shadow paging in L2. Reproducing is trivial, just disable EPT in L1 and run a VM. I haven't investigating how it breaks things." Reviewed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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