RFR: JDK-8131645 [ARM64] crash on Cavium when using G1

[Thomas Schatzl]

Hi,

On Thu, 2015-09-10 at 09:15 -0400, Eric Caspole wrote:
> Hi everybody,
> Could you review this fix?
> 
> https://bugs.openjdk.java.net/browse/JDK-8131645
> 
> Webrev:
> http://cr.openjdk.java.net/~ecaspole/JDK-8131645/00/webrev/
> 
> The problem was that without a store membar on the CodeRootSetTable 
> creation, readers could see invalid memory leading to an assert or 
> crash. This is more noticeable on ARM64 with relaxed memory semantics.
> Thanks Stefan K for noticing the exact spot for this fix.

> This ran all night with the failing test with no crashes and passes JPRT.

  just in case another review is required, looks good.

Thomas