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    • 62. 发明授权
    • System management interrupt handling for multi-core processors
    • 多核处理器的系统管理中断处理
    • US09311138B2
    • 2016-04-12
    • US13799327
    • 2013-03-13
    • Sarathy JayakumarMohan J. KumarMichael D. Kinney
    • Sarathy JayakumarMohan J. KumarMichael D. Kinney
    • G06F9/48G06F11/07
    • G06F9/4812G06F11/0772
    • Technologies for system management interrupt (“SMI”) handling include a number of processor cores configured to enter a system management mode (“SMM”) in response to detecting an SMI. The first processor core to enter SMM and acquire a master thread lock sets an in-progress flag and executes a master SMI handler without waiting for other processor cores to enter SMM. Other processor cores execute a subordinate SMI handler. The master SMI handler may direct the subordinate SMI handlers to handle core-specific SMIs. The multi-core processor may set an SMI service pending flag in response to detecting the SMI, which is cleared by the processor core that acquires the master thread lock. A processor core entering SMM may immediately resume normal execution upon determining the in-progress flag is not set and the service pending flag is not set, to detect and mitigate spurious SMIs. Other embodiments are described and claimed.
    • 用于系统管理中断(“SMI”)处理的技术包括配置为响应于检测到SMI而进入系统管理模式(“SMM”)的多个处理器核心。 进入SMM并获取主线程锁的第一个处理器核心设置正在进行的标志,并执行主SMI处理程序,而不必等待其他处理器内核进入SMM。 其他处理器核心执行从属SMI处理程序。 主SMI处理程序可以指示下级SMI处理程序来处理核心特定的SMI。 响应于检测到由获取主线程锁的处理器核心清除的SMI,多核处理器可以设置SMI服务挂起标志。 进入SMM的处理器核心在确定进行中标志未被设置并且未设置服务暂挂标志时,可以立即恢复正常执行,以检测和减轻假SMI。 描述和要求保护其他实施例。