Re: [PATCH] bitops: add _local bitops

H. Peter Anvin
2012-05-09T16:46:26Z

On 05/09/2012 09:36 AM, Michael S. Tsirkin wrote:
>
> Well it talks about a memory barrier, not an
> optimization barrier.
>

Same thing.

> If compiler reorders code, changes will appear in
> the wrong order on the current processor,
> not just on other processors, no?

Yes.

For your _local I would just copy the atomic bitops but remote the locks
in most cases.

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.