[aarch64-port-dev ] [Roland Westrelin] Re: Aarch64 port for ZGC, so far

[Stuart Monteith]

Hello,
   Thanks to Andrew, C1 is now working. I've updated the patches to as
they are today.

The patches are here:

http://cr.openjdk.java.net/~smonteith/zgc/20190314/

I'm doing some more testing and then move onto RFRs.

I have a choice of rolling Roland's membar patch into the ZGC patch
and adding him as a contributor, or I can raise a separate Java bug
and submit it as a separate patch. Are there preferences?

BR,
   Stuart

On Fri, 8 Mar 2019 at 16:34, Stuart Monteith <stuart.monteith at linaro.org> wrote:
>
> Hi,
>    I find when running with -XX:TieredStopAtLevel=1 and ZGC enabled it
> fails when running with Lucene's indexing demo
> "org.apache.lucene.demo.IndexFiles" or SPECjbb2015.
> I tried javac, and other simple examples, but I haven't managed to
> find anything simple that provokes the issue.
>
> I've uploaded this here:
>   http://cr.openjdk.java.net/~smonteith/zgc/Lucene-demo.tar.xz
>
> If you have the appropriate java command on your patch, if you run
> "index.sh" with a directory of files index as the parameter, it will
> reproduce the problem.
>
>
> BR,
>    Stuart
>
> On Fri, 8 Mar 2019 at 16:19, Andrew Haley <aph at redhat.com> wrote:
> >
> > On 3/7/19 11:36 AM, Stuart Monteith wrote:
> > > There is an issue with C1 - the changes in "8217717: ZGC: Broken oop
> > > map in C1 load barrier stub" did regress things somewhat causing
> > > crashes with stale references. However, As patching on aarch64 C1
> > > isn't really supported, I'm not satisfied it was working correctly
> > > before. Patching lea may impractical as things stand today.
> >
> > I can't get it to fail. Please tell me exactly what I have to do to
> > demonstrate the C1 failure.
> >
> > --
> > Andrew Haley
> > Java Platform Lead Engineer
> > Red Hat UK Ltd. <https://www.redhat.com>
> > EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671