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

Reingruber, Richard richard.reingruber at sap.com
Mon Apr 12 09:44:38 UTC 2021


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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