公开(公告)号：US20220206875A1

公开(公告)日：2022-06-30

申请号：US17134065

申请日：2020-12-24

申请人： Intel Corporation

发明人： Vedvyas SHANBHOGUE ,  Jeff A. HUXEL ,  Jeffrey G. WIEDEMEIER ,  James D. ALLEN ,  Arvind RAMAN ,  Krishnakumar GANAPATHY

IPC分类号： G06F9/52 ,  G06F11/07 ,  G06F9/30 ,  G06F9/38

摘要： A processor is described. The processor includes model specific register space that is visible to software above a BIOS level. The model specific register space is to specify a granularity of a processing entity of a lock-step group. The processor also includes logic circuitry to support dynamic entry/exit of the lock-step group's processing entities to/from lock-step mode including: i) termination of lock-step execution by the processing entities before the program code to be executed in lock-step is fully executed; and, ii) as part of the exit from the lock-step mode, restoration of a state of a shadow processing entity of the processing entities as the state existed before the shadow processing entity entered the lock-step mode and began lock-step execution of the program code.