By UEFI, BIOS should put all APs into which state before EFI_EVENT_LEGACY_BOOT_GUID or EFI_EVENT_GROUP_EXIT_BOOT_SERVICES is signaled?
All APs are placed into an idle state.
Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: By UEFI, BIOS should put all APs into which state before EFI_EVENT_LEGACY_BOOT_GUID or EFI_EVENT_GROUP_EXIT_BOOT_SERVICES is signaled? ### Response: All APs are placed into an idle state. 