[10u] RFA: JDK-8203305 and JDK-8203669 (RTM fixes for POWER9)

[Rob McKenna]

A sponsor must push to the jdk-updates/jdk10u forest. There are no
automatic syncs between the jdk project & the jdk-updates project.

    -Rob

On 07/06/18 23:18, Gustavo Romero wrote:
> Hi Rob,
> 
> Thanks for approving the backports.
> 
> Is that necessary any sponsor to push them or the integration will happen
> automatically from now on?
> 
> 
> Regards,
> Gustavo
> 
> On 06/05/2018 04:18 PM, Gustavo Romero wrote:
> >Hi Rob,
> >
> >On 06/04/2018 09:33 PM, Rob McKenna wrote:
> >>Hi Gustavo,
> >>
> >>As per rules 1 & 2, please add a fix request comment to each bug along
> >>with the jdk10u-fix-request label.
> >>
> >>(note, this is the new process - approval mails are no longer necessary)
> >
> >oh I see. Thank you. It's done. I was only unsure about how I could turn
> >conspicuous the fact that it's a patchset and so getting 8203305 implies
> >getting 8203669. I did a crossref: so on request for 8203305 I mention
> >8203669, and vice versa. Please, let me if it's not ok.
> >
> >
> >Best regards,
> >Gustavo
> >
> >>     -Rob
> >>
> >>On 04/06/18 17:05, Gustavo Romero wrote:
> >>>Hi,
> >>>
> >>>Some distro releases, notably Ubuntu 18.04 LTS "Bionic Beaver", are already
> >>>shipping OpenJDK 10. Ubuntu 18.04 is able to run on the new POWER9
> >>>machines. On some of these new POWER9 machines the JVM won't be able to
> >>>detect a new POWER9 TM mode (called "TM with No Suspend mode") and will
> >>>halt on checking if the JVM is capable of enabling the RTM feature (which
> >>>depends upon TM).
> >>>
> >>>So I would like to request the approval to backport the following two
> >>>changes to 10u that address this issue on POWER9 DD2.1:
> >>>
> >>>Title        : RFR(XS): 8203305: PPC64: Improve TM detection for enabling RTM on Linux / POWER9 [1]
> >>>Bug          : https://bugs.openjdk.java.net/browse/JDK-8203305
> >>>Review thread: http://mail.openjdk.java.net/pipermail/hotspot-dev/2018-May/032313.html
> >>>Patch        : http://hg.openjdk.java.net/jdk/jdk/raw-rev/e2d9b38630c3
> >>>
> >>>Title        : RFR(S) : 8203669: PPC64: Fix jtreg RTM tests after "8203305: Improve TM detection for enabling RTM on Linux / POWER9" [2]
> >>>Bug          : https://bugs.openjdk.java.net/browse/JDK-8203669
> >>>Review thread: http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2018-May/029091.html
> >>>Patch        : http://hg.openjdk.java.net/jdk/jdk/raw-rev/ede65c4fb6da
> >>>
> >>>Both changes apply cleanly to 10u except for small offsets.
> >>>
> >>>Change [1] is PPC-only. Change [2] touches shared code but it just changes
> >>>a jtreg test in regard to PPC and fixes a few typos. Although changes [1]
> >>>and [2] are marked as "Enhancement" in the JBS, I understand that they
> >>>actually fit the "CPU fix merges" as found on Rule 3, in the Request
> >>>for Approval rules [3].
> >>>
> >>>Thank you.
> >>>
> >>>
> >>>Best regards,
> >>>Gustavo
> >>>
> >>>[3] http://openjdk.java.net/projects/jdk-updates/approval.html
> >>>
> >>
> >
>