RE: [PATCH v2 3/4] x86/split_lock: Handle #AC exception for split lock

[Luck, Tony]

>> +    WARN_ONCE(1, "A split lock issue is detected. Please FIX it\n");
>
> But, warning here is also not super useful.  Shouldn't we be dumping out
> the info in 'regs' instead of the current context?  We don't care about
> the state in the #AC handler, we care about 'regs'.

Maybe:

        WARN_ONCE(1, "split lock detected at %pF\n", regs[EIP]);

-Tony