RFR: 8318776: Require supports_cx8 to always be true [v5]

[David Holmes]

On Wed, 22 Nov 2023 18:35:33 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> src/hotspot/share/runtime/vm_version.cpp line 33:
>> 
>>> 31: void VM_Version_init() {
>>> 32:   VM_Version::initialize();
>>> 33:   guarantee(VM_Version::supports_cx8(), "Support for 64-bit atomic operations in required in this release");
>> 
>> Typo: "in required in". Also, no need to mention "this release" at all?
>> Suggestion for message: "JVM requires platform support for 64-bit atomic operations"
>
> Or the simpler change:
> s/in required/is required/

Message tweaked: Support for 64-bit atomic operations is required

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PR Review Comment: https://git.openjdk.org/jdk/pull/16625#discussion_r1402877940