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If the user set disable smm by '-machine smm=off', we should not register smram_listener so that we can avoid waster memory in kvm since the added sencond address space. Meanwhile we should assign value of the global kvm_state before invoking the kvm_arch_init(), because pc_machine_is_smm_enabled() may use it by kvm_has_mm(). Signed-off-by: Gonglei <arei.gonglei@huawei.com> Message-Id: <1496316915-121196-1-git-send-email-arei.gonglei@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>