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Techniques for escalating interrupts in a processing unit using virtual processor thread groups and software stack levels
Techniques for escalating interrupts in a processing unit using virtual processor thread groups and software stack levels
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机译:使用虚拟处理器线程组和软件堆栈级别升级处理单元中的中断的技术
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摘要
A method of handling interrupts includes receiving an event notification message (ENM) that specifies a level, an event target number (ETN), and a number of bits to ignore. A group of virtual processor threads that may be potentially interrupted are determined based on the ETN, the number of bits to ignore, and a process identifier when the level specified in the ENM corresponds to a user level. The ETN identifies a specific virtual processor thread and the number of bits to ignore identifies the number of lower-order bits to ignore when determining a group of virtual processor threads that may be potentially interrupted. In response to no virtual processor thread within the group of virtual processor threads being dispatched and operating on an associated physical processor, an escalate message that includes an escalate event number is transmitted. The escalate event number is used to generate a subsequent ENM.
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