[PATCH] x86: Add an explicit barrier() to clflushopt()

[H. Peter Anvin]

On 01/07/16 14:32, H. Peter Anvin wrote:
>
> Nevermind.  CLFLUSH is not ordered with regards to CLFLUSHOPT to the
> same cache line.
> 

*Except* to the same cache line, dammit.

        -hpa