Messages in this thread | | | Date | Fri, 22 Jun 2018 11:28:21 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [RFC PATCH 00/16] x86/split_lock: Enable #AC exception for split locked accesses |
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On Thu, 21 Jun 2018, Fenghua Yu wrote: > The control knob for firmware is to choose continuing firmware execution > by disabling #AC split lock (default) or stopping firmware execution > by enabling #AC for split lock. Stopping firmware execution may be useful > in hard real time system to identify any split lock issue on the platform.
There is no maybe on a real-time system. Either the thing is sane or it's not. There is no middle ground. The default has to be fail otherwise firmware wont be fixed ever.
> So the control knobs may be useful for different scenarios, right?
The control knobs are just helping to proliferate crap, so they are not useful, they are outright counterproductive.
Thanks,
tglx
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