Integrated: 8367268: Remove unused os::numa_topology_changed()

[Joel Sikström]

On Tue, 9 Sep 2025 16:39:17 GMT, Joel Sikström <jsikstro at openjdk.org> wrote:

> Hello,
> 
> The method os::numa_topology_changed() returns false on all platforms with no callers. It makes sense to remove it as the JVM does not support changing the NUMA topology during runtime, or in other words, hotswapping CPUs. There are a lot of places that break if the NUMA topology would change during runtime.
> 
> The last implementation of os::numa_topology_changed() that did something other than just returning false was removed in [JDK-8244224](https://bugs.openjdk.org/browse/JDK-8244224) with the removal of the Solaris and SPARC ports.
> 
> I do not see an issue with building on AIX, but would appreciate any feedback on this from AIX maintainers.
> 
> Testing:
>  * tier1 on Oracle supported platforms

This pull request has now been integrated.

Changeset: 3d679087
Author:    Joel Sikström <jsikstro at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/3d679087b0376c221d536780cee387dc2dd8019e
Stats:     10 lines in 5 files changed: 0 ins; 10 del; 0 mod

8367268: Remove unused os::numa_topology_changed()

Reviewed-by: ayang, dholmes

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PR: https://git.openjdk.org/jdk/pull/27176