On 03/09/2015 09:44 AM, Linus Torvalds wrote:
>
> And remember: those zero-cost out-of-order branches turn quite
> expensive if they *ever* mispredict. Even a 5% mispredict rate is
> likely to mean "it's better to have a data dependency chain".
>
> So it could easily go either way. I'm not convinced the old code is bad at
> all.
>
I'm inclined to side with Linus here. I'm hesitant to change this based
on pure speculation.
To answer Andy's question: I do believe we need espfix for V86 mode as well.
-hpa
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