git: openjdk/jdk25u: master: 2 new changesets

[Aleksey Shipilev]

Changeset: 4a7697c5
Branch: master
Author:    Hari Prasad Kummari <hkummari at openjdk.org>
Committer: Aleksey Shipilev <shade at openjdk.org>
Date:      2025-10-24 11:49:30 +0000
URL:       https://git.openjdk.org/jdk25u/commit/4a7697c541411dd7de6079c87d7d012c7c87a2fc

8346884: Add since checker test to jdk.editpad

Backport-of: 7daf9813c0617ea97d95bf326eac1758e40cddd6

+ test/jdk/tools/sincechecker/modules/jdk.editpad/JdkEditpadCheckSince.java

Changeset: 5228b25b
Branch: master
Author:    Vladimir Petko <vpetko at openjdk.org>
Committer: Aleksey Shipilev <shade at openjdk.org>
Date:      2025-10-24 11:49:55 +0000
URL:       https://git.openjdk.org/jdk25u/commit/5228b25bda6de608475de61d7b0eccf88b2e9298

8370049: [s390x] G1 barrier compareAndExchange does not return old value when compareExchange fails

Backport-of: 5609ee11a2daf888d02c0c1b2b70eb4df817582c

! src/hotspot/cpu/s390/gc/g1/g1_s390.ad
! test/hotspot/jtreg/compiler/gcbarriers/TestG1BarrierGeneration.java