Don't install a leaf TDP MMU SPTE if the parent page's level doesn't
match the target level of the fault, and instead have the vCPU retry the
faulting instruction after warning. Continuing on is completely
unnecessary as the absolute worst case scenario of retrying is DoSing
the vCPU, whereas continuing on all but guarantees bigger explosions, e.g.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20221213033030.83345-5-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>