06-12-2018 дата публикации
Номер: US20180349137A1
Принадлежит:
Embodiments of processors, methods, and systems for reconfiguring a processor without a system reset are described. In an embodiment, a processor includes configuration storage, shadow configuration storage, trigger storage, and a trigger circuit. The trigger circuit is to cause, based on trigger storage content, shadow configuration storage content to be copied to the configuration storage. 1. A processor comprising:configuration storage;shadow configuration storage;trigger storage; anda trigger circuit to cause, based on trigger storage content, shadow configuration storage content to be copied to the configuration storage.2. A method comprising:loading first configuration settings into first shadow configuration storage in a first processor;setting a first trigger in the first processor to cause the first configuration settings to be copied from the first shadow configuration to first configuration storage in the first processor; andbased on the first trigger, copying the first configuration settings from the first shadow configuration to the first configuration storage.3. The method of claim 2 , wherein loading the first configuration settings into the first shadow configuration storage is performed by a basic input/output system (BIOS).4. The method of claim 3 , further comprising selecting claim 3 , by the BIOS claim 3 , a thread in the first processor to serve as a system bootstrap processor (SBSP).5. The method of claim 4 , further comprising causing claim 4 , by the BIOS claim 4 , one or more other threads to enter a wait state.6. The method of claim 5 , further comprising:sending, by the BIOS, a first message to first firmware on the first processor; andcausing, by the BIOS, the first processor to enter a halt state.7. The method of claim 6 , further comprising causing claim 6 , by the first firmware in response to the first message claim 6 , the first processor to send a second message to a first platform controller hub (PCH) through a sideband link to ...
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