RFR: 8316961: Fallback implementations for 64-bit Atomic::{add,xchg} on 32-bit platforms [v4]

[Aleksey Shipilev]

On Tue, 24 Oct 2023 00:03:02 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Do I understand correctly that all platforms support cas64 other than arm32, and even it does so if using a non-ancient hardware version or the kernel helper?

That is my understanding after doing this work, yes.

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PR Comment: https://git.openjdk.org/jdk/pull/16252#issuecomment-1776622343