PERFORCE change 58403 for review

Wed Jul 28 15:57:09 PDT 2004

> http://perforce.freebsd.org/chv.cgi?CH=58403
> 
> Change 58403 by jhb at jhb_slimer on 2004/07/28 20:49:40
> 
> 	Prompted by some questions on IRC from gibbs@, scottl@, and others:
> 	atomic_store_rel() on ia32 does not actually need a lock

...

> Differences ...
> 
> ==== //depot/projects/smpng/sys/i386/include/atomic.h#13 (text+ko) ====
> 
> @@ -180,7 +180,7 @@
>   * XXX: This is _NOT_ safe on a P6 or higher because it does not guarantee
>   * memory ordering.  These should only be used on a 386.
>   */

Is the above comment still accurate?

--
Justin