RFR: JDK-8318119: Invalid narrow Klass base on aarch64 post 8312018 [v3]

[Thomas Stuefe]

On Mon, 6 Nov 2023 17:59:12 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> (the best way would be to move this function into CPU specific files. We would have some duplication, but at least every CPU can then decide how to layout memory, and the comments would not have to be so darn vague.

> Ah, it's not just me, then.

No, I really dislike this too. Forcing something that is inherently CPU specific in a CPU agnostic form, and then having to explain it every time.

> Shame. This is very CPU specific.

I may retry making this CPU specific, once I have some cycles left.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16215#discussion_r1395335358