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Right now, the system reset is concluded by a call to cpu_synchronize_all_post_reset() in order to sync any changes that the machine reset callback applied to the CPU state. However, for VMs with encrypted state such as SEV-ES guests (currently the only case of guests with non-resettable CPUs) this cannot be done, because guest state has already been finalized by machine-init-done notifiers. cpu_synchronize_all_post_reset() does nothing on these guests, and actually we would like to make it fail if called once guest has been encrypted. So, assume that boards that support non-resettable CPUs do not touch CPU state and that all such setup is done before, at the time of cpu_synchronize_all_post_init(). Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>