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by toast0
1556 days ago
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> But a thread can be context switched via a system call, so switching back to it will return to it via a return from system call which is not necessarily serializing on x86. System call entry is under the control of the thread though. If your sequence of operations fails due to a missing barrier and being rescheduled after a system call, it might be a kernel bug, but you can fix it by putting in the barrier and it would likely be fixed on the switch via game patches and maybe a quality control check that the troublesome sequence is not present in the code. |
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