Messages in this thread | | | Date | Fri, 22 Jun 2018 00:08:44 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC PATCH 00/16] x86/split_lock: Enable #AC exception for split locked accesses |
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On Thu, Jun 21, 2018 at 03:00:03PM -0700, Fenghua Yu wrote: > The control knob for kernel is to choose re-executing the faulting > instruction (default) or kernel panic. Kernel panic may be useful in hard > real time which has less tolerant to bad performance.
The kernel should never trigger this, ever. Any #AC is a plain bug and should be fixed. So unconditional WARN+disable is suffient.
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