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    • 16. 发明公开
    • AVOIDING PREMATURE ENABLING OF NONMASKABLE INTERRUPTS WHEN RETURNING FROM EXCEPTIONS
    • 避免早期从例外返回时启用无法中断的中断
    • EP3198402A1
    • 2017-08-02
    • EP15843881.2
    • 2015-08-31
    • Intel Corporation
    • ANVIN, H. PeterNEIGER, Gilbert
    • G06F9/30
    • G06F13/24G06F9/327G06F9/4812G11C7/1072
    • A processor of an aspect includes a decode unit to decode an exception handler return instruction. The processor also includes an exception handler return execution unit coupled with the decode unit. The exception handler return execution unit, responsive to the exception handler return instruction, is to not configure the processor to enable delivery of a subsequently received nonmaskable interrupt (NMI) to an NMI handler if an exception, which corresponds to the exception handler return instruction, was taken within the NMI handler. The exception handler return execution unit, responsive to the exception handler return instruction, is to configure the processor to enable the delivery of the subsequently received NMI to the NMI handler if the exception was not taken within the NMI handler. Other processors, methods, systems, and instructions are disclosed.
    • 一个方面的处理器包括用于解码异常处理程序返回指令的解码单元。 处理器还包括与解码单元耦合的异常处理程序返回执行单元。 响应于异常处理程序返回指令,异常处理程序返回执行单元将不配置处理器以使得能够在NMI处理程序将后续接收到的不可屏蔽中断(NMI)传递给NMI处理程序,如果与异常处理程序返回指令相对应的异常, 在NMI处理程序内被采取。 响应于异常处理程序返回指令,异常处理程序返回执行单元将配置处理器,以使得如果在NMI处理程序中未采取异常,则能够将随后接收到的NMI传送到NMI处理程序。 公开了其他处理器,方法,系统和指令。