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

[Andrew Haley]

On Mon, 6 Nov 2023 07:01:50 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Argh, typo. Does this mean that the class metadata might be more than 4G in size? Is that the risk?
>
> Currently not. Class space is limited to 3Gb, CDS to 1Gb, they are placed adjacent to each other to not surpass 4G.

So what does the word "probably" refer to?

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PR Review Comment: https://git.openjdk.org/jdk/pull/16215#discussion_r1382971652