RFR: 8357976: GenShen crash in swap_card_tables: Should be clean

[Cesar Soares Lucas]

On Tue, 10 Jun 2025 20:14:49 GMT, William Kemper <wkemper at openjdk.org> wrote:

> Degenerated cycles must also clean the `read` card table before swapping it with the `write` card table.

Marked as reviewed by cslucas (Committer).

-------------

PR Review: https://git.openjdk.org/jdk/pull/25735#pullrequestreview-2915227439