[jdk15u-dev] RFR: 8257569: Failure observed with JfrVirtualMemory::initialize

[Ekaterina Vergizova]

I'd like to backport JDK-8257569 to 15u for parity with 11u.
The patch applies cleanly.
Tested with jdk/jfr and tier1 tests.

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Commit messages:
 - Backport f0bd9db5c763a742b5641e2b70f0c49f19d1d768

Changes: https://git.openjdk.org/jdk15u-dev/pull/246/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk15u-dev&pr=246&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8257569
  Stats: 7 lines in 1 file changed: 2 ins; 4 del; 1 mod
  Patch: https://git.openjdk.org/jdk15u-dev/pull/246.diff
  Fetch: git fetch https://git.openjdk.org/jdk15u-dev pull/246/head:pull/246

PR: https://git.openjdk.org/jdk15u-dev/pull/246