Hi, Jeff: If AP code use base-typed debuglib, then it's mp safe? Thanks At 2024-05-31 14:33:40, "Jeff Fan via groups.io" wrote: AP cannot run any UEFI Service. Please make sure AP code use base-typed DebugLib instance (Such as BaseDebugLibSerialport.inf from MdePkg) fanjianfeng@byosoft.com.cn 发件人： Yoshinoya 发送时间： 2024-05-31 14:22 收件人： devel@edk2.groups.io 主题： [edk2-devel] Is DEBUG output function safe for MP case? Hello I ask for help for debug output in multi-core case. Is the current DEBUG marco safe for AP Cores to output message? If the output message is too long, it takes too much time, will it cause some abnormal exception? Thanks -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#119424): https://edk2.groups.io/g/devel/message/119424 Mute This Topic: https://groups.io/mt/106403392/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-