RFR: 8372589: VM crashes on init when NonNMethodCodeHeapSize is set too small and UseTransparentHugePages is enabled

[David Briemann]

…all and UseTransparentHugePages is enabled

Aligning upwards instead of downwards not only solves the crash in large huge page scenarios but also ensures that the cache sizes are at least as big as they were set.

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Commit messages:
 - 8372589: VM crashes on init when NonNMethodCodeHeapSize is set too small and UseTransparentHugePages is enabled

Changes: https://git.openjdk.org/jdk/pull/28658/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28658&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8372589
  Stats: 10 lines in 1 file changed: 0 ins; 6 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/28658.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28658/head:pull/28658

PR: https://git.openjdk.org/jdk/pull/28658