RFR: 8335643: serviceability/dcmd/vm tests fail for ZGC after JDK-8322475 [v2]

[Thomas Stuefe]

> The new System.map facility fails its tests when the JVM is using ZGC. The facility is working fine, but the test checks for the java heap to appear as committed non-shared memory segment, but on ZGC we reserve the memory as shared memory.

Thomas Stuefe has updated the pull request incrementally with one additional commit since the last revision:

  problemlist

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20034/files
  - new: https://git.openjdk.org/jdk/pull/20034/files/5d89a936..50a73e14

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20034&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20034&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20034.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20034/head:pull/20034

PR: https://git.openjdk.org/jdk/pull/20034