RFR: 8318594: NMT: VM.native_memory crashes on assert if functionality isn't supported by OS

[Zhengyu Gu]

On Tue, 7 Nov 2023 13:37:50 GMT, Afshin Zafari <azafari at openjdk.org> wrote:

> The case of unsupported call (`mincore`) is caught and returned `false`.
> Tier1 tested.

LGTM

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Marked as reviewed by zgu (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16540#pullrequestreview-1718020489