Integrated: 8359437: Make users and test suite not able to set LockingMode flag

[Anton Artemov]

On Tue, 17 Jun 2025 08:39:49 GMT, Anton Artemov <duke at openjdk.org> wrote:

> This PR contains changes for the 1st phase of the `LockingMode` flag obsoletion. 
> 
> The work is done by @fbredber, I have taken it over and am finishing it while he's on vacation. 
> 
> In the 1st phase one keeps the `LockingMode` variable in all places, but makes it non-settable from the command line. All the C1 and C2 code related to legacy locking will still be in place (but as dead code) and removed later (phase 2).
> 
> Lightweight locking is the default locking from now on.
> 
> Tested in tiers 1 - 7.

This pull request has now been integrated.

Changeset: 5039b42d
Author:    Anton Artemov <anton.artemov at oracle.com>
Committer: David Holmes <dholmes at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/5039b42de170769797312969185ee9d67f34cf24
Stats:     1154 lines in 34 files changed: 24 ins; 1044 del; 86 mod

8359437: Make users and test suite not able to set LockingMode flag
8358542: Remove RTM test VMProps

Co-authored-by: Fredrik Bredberg <fbredberg at openjdk.org>
Reviewed-by: coleenp, lmesnik, fbredberg, alanb, dholmes

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PR: https://git.openjdk.org/jdk/pull/25847