Integrated: 8369013: Shenandoah: passive mode should support enabling ShenandoahCardBarrier

[Rui Li]

On Fri, 24 Oct 2025 00:18:03 GMT, Rui Li <duke at openjdk.org> wrote:

> Add card barriers to passive mode to test out the price of card barriers. 
> 
> How this change is implemented is to instantiate the old region in passive mode - old region owns the card table so this would minimize the code change with a bit price of native memory. It does sound weird to have old gen in passive mode, but since passive mode is a just diagnostic mode, we'll go with it for the cleanliness of the change.

This pull request has now been integrated.

Changeset: f3dfdfa3
Author:    Rui Li <ruiamzn at amazon.com>
Committer: Xiaolong Peng <xpeng at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/f3dfdfa3fdc97c2c850251d58f91134e0ae82240
Stats:     118 lines in 9 files changed: 105 ins; 7 del; 6 mod

8369013: Shenandoah: passive mode should support enabling ShenandoahCardBarrier

Reviewed-by: wkemper

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PR: https://git.openjdk.org/jdk/pull/27966