Re: [RFT/PATCH v2 2/6] x86-64: Optimize vread_tsc's barriers

Linus Torvalds
2011-04-07T18:31:44Z

On Thu, Apr 7, 2011 at 11:15 AM, Andi Kleen <andi@firstfloor.org> wrote:
>
> I would prefer to be safe than sorry.

There's a difference between "safe" and "making up theoretical
arguments for the sake of an argument".

If Intel _documented_ the "barriers on each side", I think you'd have a point.

As it is, we're not doing the "safe" thing, we're doing the "extra
crap that costs us and nobody has ever shown is actually worth it".

Linus