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

Stuart Monteith stuart.monteith at linaro.org
Fri Mar 8 16:34:38 UTC 2019

   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:

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.


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

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