RFR: JEP draft for Linux/s3990x port

Volker Simonis volker.simonis at gmail.com
Thu Sep 29 16:55:21 UTC 2016

Hi Vladimir,

thanks a lot for reviewing and endorsing the JEP.

I've linked all the relevant issues to the JEP  (they all have a link
to a webrev) and change the state to "Submitted".

There's just one more small shared change we need for the port for
which we haven't opened a bug now because we are still working on
simplifying it. The current version looks as follows:


What are the next steps? Should I add a "jdk9-fc-request" label to t
he JEP and add a corresponding "FC Extension Request" comment to it?
Or will this be done automatically once I move it to "Candidate"?

Is there anything left to do before I can move it to "Candidate" state?

Thanks a lot and best regards,

On Tue, Sep 27, 2016 at 8:15 PM, Vladimir Kozlov
<vladimir.kozlov at oracle.com> wrote:
> On 9/27/16 10:49 AM, Volker Simonis wrote:
>> Hi,
>> can you please review and endorse the following draft JEP for the
>> integration of the Linux/s390x port into the jkd9 master repository:
>> https://bugs.openjdk.java.net/browse/JDK-8166730
> Good.
> Add links to webrevs in a comment. It will help to get umbrella FC extension
> approval.
>> As detailed in the JEP, the Linux/s390x requires very few shared
>> changes and we therefore don't foresee any impact on the existing
>> platforms at all. Following you can find a short description of the
>> planned changes:
>> hotspot:
>> =======
>> Out for review:
>> 8166560: [s390] Basic enablement of s390 port.
>> http://cr.openjdk.java.net/~goetz/wr16/8166560-basic_s390/hotspot.wr01/
>> Reviewed:
>> 8166562: C2: Suppress relocations in scratch emit.
>> http://cr.openjdk.java.net/~goetz/wr16/8166562-scratch_emit/webrev.01/
>> Will send RFR soon (depends on 8166560):
>> 8166561: [s390] Adaptions needed for s390 port in C1 and C2.
>> http://cr.openjdk.java.net/~goetz/wr16/8166562-scratch_emit/webrev.01
> Wrong link.
> Thanks,
> Vladimir
>> We are still investigating the need of these shared changes:
>> http://cr.openjdk.java.net/~goetz/wr16/s390x_patch_queue/hotspot/9000011-pass_PC_to_retAddrOffset.patch
>> http://cr.openjdk.java.net/~goetz/wr16/s390x_patch_queue/hotspot/9000016-constant_table_offset.patch
>> And finally the patch with the s390x-only platform files. We are still
>> editing these to get them into OpenJdk style and shape.
>> Hotspot passes most jck, jtreg and spec tests with these.
>> http://cr.openjdk.java.net/~goetz/wr16/s390x_patch_queue/hotspot/9000101-zFiles.patch
>> top-level repository:
>> ===============
>> The following is just adding some s390x specific compiler flags to
>> flags.m4
>> 8166800: [s390] Top-level build changes required for Linux/s390x
>> https://bugs.openjdk.java.net/browse/JDK-8166800
>> jdk repository:
>> ============
>> This one just adds a new jvm.cfg file for s390x
>> 8166801: [s390] Add jvm.cfg file for Linux/s390x
>> https://bugs.openjdk.java.net/browse/JDK-8166801
>> And finally we plan to do one more change which fixes the jtreg test
>> on Linux/s390x. But this is mainly for the correct detection of the
>> platform and for excluding the tests which are not appropriate for
>> s390x.
>> Thank you and best regards,
>> Volker

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