RFR: 8378675: PPC64: increase instruction cache line size [v3]

[Martin Doerr]

On Thu, 26 Feb 2026 13:19:52 GMT, David Briemann <dbriemann at openjdk.org> wrote:

>> Set the instruction cache line size for Power to 128 bytes.
>> 
>> Add functions to retrieve the data cache line size and instruction cache line size from the system (AIX & Linux).
>
> David Briemann has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove comments, fix comparison

Marked as reviewed by mdoerr (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29918#pullrequestreview-3860883432