RFR: 8357155: [asan] ZGC does not work [v2]

[Matthias Baesken]

> Many (all?) ZGC related jtreg tests do not work when the JDK is built with address sanitizer asan enabled (configure flag --enable-asan).
> This can be seen on SUSE Linux x86_64 and also on ppc64le , opt binaries were used.
> It has been suggested to do a workaround -  'But I think that simply adapting the zAddress_[...].cpp implementations to always select the largest heap base would go a long way for providing ASAN compatibility.'
> This seems to work nicely on x86_64 and ppc64le,  however the zgc related tests still fail on Linux aarch64 (should I exclude this platform from my patch?) .

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  remove aarch64 from the change, adjust ppc64

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/25549/files
  - new: https://git.openjdk.org/jdk/pull/25549/files/ed2885ff..82a11f9b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25549&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25549&range=00-01

  Stats: 5 lines in 2 files changed: 0 ins; 4 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25549.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25549/head:pull/25549

PR: https://git.openjdk.org/jdk/pull/25549