RFR: 8312132: Add tracking of multiple address spaces in NMT [v105]

[Thomas Stuefe]

On Fri, 24 May 2024 12:34:12 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

>> This is clearly a point of confusion, as Gerard also asked about this. The answer is that the MFT only cares about memory in a file, which is always considered committed... So we consider reserved memory to be committed. Yeah, let's just change it so that MFT always commits memory instead.
>
> Switched it around a bit.

For the purpose of consistency with the rest of NMT, and to be able to use normal VirtualSummary etc, maybe MFT should mark the whole range as reserved upfront?

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PR Review Comment: https://git.openjdk.org/jdk/pull/18289#discussion_r1614378052