RFR: 8319883: Zero: Use atomic built-ins for 64-bit accesses

[Aleksey Shipilev]

On Tue, 14 Nov 2023 03:11:02 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Looks good. IWBN to get zero test results before integrating.

Thanks! I already did lots of tests for Linux x86_32 Zero, including full jcstress runs, see "Additional testing" section. I think it is enough for this work to go forward. There are other Zero fixes in pipeline that need to land before we can fully test all combinations of Zero arches.

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PR Comment: https://git.openjdk.org/jdk/pull/16600#issuecomment-1810056128