[11u] RFR (XXS) 8239386: handle ContendedPaddingWidth in vm_version_aarch64

[Hohensee, Paul]

Lgtm.

Thanks,
Paul

-----Original Message-----
From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.java.net> on behalf of Dmitry Chuyko <dmitry.chuyko at bell-sw.com>
Date: Wednesday, April 28, 2021 at 12:00 PM
To: "jdk-updates-dev at openjdk.java.net" <jdk-updates-dev at openjdk.java.net>
Subject: [11u] RFR (XXS) 8239386: handle ContendedPaddingWidth in vm_version_aarch64

Hello,

Original RFE: https://bugs.openjdk.java.net/browse/JDK-8239386

Original patch applied with fuzz, so the hunk was manually put in the
right place (after prefetch distance masking).

11u webrev: http://cr.openjdk.java.net/~dchuyko/8239386/webrev.11u.00/

Testing: tier1, tier2 (aarch64). Default ContendedPaddingWidth is still
128 on HW with smaller cache line.

--
Thanks,
-Dmitry