RFR [XS][6/7]: 8197928: Only enqueue deferred cards with references into regions that have a tracked remembered set during GC

[Thomas Schatzl]

Hi Sangheon, Stefan,

On Mon, 2018-03-26 at 15:43 -0700, sangheon.kim wrote:
> Hi Thomas,
> 
> On 03/05/2018 07:25 AM, Thomas Schatzl wrote:
> > Hi all,
> > 
> >    can I have reviews for this tiny change that optimizes
> > evacuation a little: in particular, when updating the remembered
> > sets (enqueuing cards), we do not need to do this for regions where
> > we do not track the remembered sets.
[...]
> > CR:
> > https://bugs.openjdk.java.net/browse/JDK-8197928
> > Webrev:
> > http://cr.openjdk.java.net/~tschatzl/8197928/webrev/
> 
> Looks good to me too.

  thanks for your reviews,

Thomas