[11u] RFR 8244847: Linux/PPC: runtime/CompressedOops/CompressedClassPointers: smallHeapTest fails

Hohensee, Paul hohensee at amazon.com
Mon Apr 12 21:59:49 UTC 2021

The corresponding #endif should have its comment updated to "// AARCH64 || PPC64". Otherwise lgtm.


-----Original Message-----
From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.java.net> on behalf of "Reingruber, Richard" <richard.reingruber at sap.com>
Date: Monday, April 12, 2021 at 2:45 AM
To: "jdk-updates-dev at openjdk.java.net" <jdk-updates-dev at openjdk.java.net>
Subject: [11u] RFR 8244847: Linux/PPC: runtime/CompressedOops/CompressedClassPointers: smallHeapTest fails


Please help review this XXS backport of JDK-8244847 to 11u.

Original bug (JDK16):

11u webrev:


  In both codelines, JDK16 and JDK11u, the fix reuses code for AARCH64 to search for a
  free address block below 32g that can be used for a zerobased compressed class
  space also on PPC64.

  In JDK16 the method Metaspace::reserve_address_space_for_compressed_classes() holds that code.
  In JDK11u it is the method Metaspace::allocate_metaspace_compressed_klass_ptrs().

  The test (CompressedClassPointers.java) is not changed because it's not disabled in 11u.


CI testing @SAP: JCK and JTREG, also in Xcomp mode, SPECjvm2008, SPECjbb2015, Renaissance Suite,
SAP specific tests with fastdebug and release builds on all platforms

Thanks, Richard.

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