RFR: 8334564: VM startup: fatal error: FLAG_SET_ERGO cannot be used to set an invalid value for NonNMethodCodeHeapSize

[Vladimir Kozlov]

On Thu, 20 Jun 2024 15:54:29 GMT, Lutz Schmidt <lucy at openjdk.org> wrote:

> CodeHeap segment sizes are aligned to page size multiples. This can result in the non-nmethod segment receiving size 0 (zero). Range checking during FLAG_SET_ERGO processing detects that and raises an error, preventing the vm from starting.
> 
> This fix increases the minimum size of the non-nmethod segment to page size, preventing it from being rounded down to zero.
> 
> Verified by manual testing. Nightly tests (mainly to discover unexpected side effects) pending.

Good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19812#pullrequestreview-2130903414