| 摘要 |
Methods and apparatus relating to atomic operations on multi-socket/multi-processor platforms are described. In one embodiment, a first agent (such as a processor core) is coupled to a second agent (such as an input/output device) via a link. A memory, coupled to the first agent, stores a device driver, corresponding to the second agent, and an operating system (OS) for the first agent. The OS detects an affinity mask that indicates which agents are to be quiesced for an atomic operation to be issued by the second agent. The agents identified by the affinity mask are then quiesced in response to receipt of the atomic operation from the second agent. Other embodiments are also disclosed and claimed.
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