RFR: 8367485: os::physical_memory is broken in 32-bit JVMs when running on 64-bit OSes [v13]

[Albert Mingkun Yang]

On Thu, 25 Sep 2025 14:47:34 GMT, Joel Sikström <jsikstro at openjdk.org> wrote:

>> Anton Artemov has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - 8367485: Fixed new line after typedef.
>>  - 8367485: Fixed comment in global definitions.
>
> src/hotspot/share/utilities/globalDefinitions.hpp line 423:
> 
>> 421: // This typedef is to address the issue of running a 32-bit VM on a 64-bit platform. In this case
>> 422: // the amount of physical memory may not fit in size_t, so we have to have a larger type. Once 32-bit
>> 423: // is depricated, one can use size_t.
> 
> It's not only 32-bit VM on a 64-bit platform, it's 32-bit VM in general, since we can have an issue on both: 1) a 64-bit platform, and 2) a 32-bit (ARM) platform with LPAE enabled.

Typo: "depricated".

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PR Review Comment: https://git.openjdk.org/jdk/pull/27335#discussion_r2379615341