git: openjdk/jdk21u-dev: master: 8319777: Zero: Support 8-byte cmpxchg

[Aleksey Shipilev]

Changeset: 98e6d049
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2024-02-08 09:27:12 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/98e6d049466445b41fabdb802d27dab79f6281f4

8319777: Zero: Support 8-byte cmpxchg
8320582: Zero: Misplaced CX8 enablement flag

Reviewed-by: phh
Backport-of: 6b96bb640aa91d96877b8ceea5fed359607c1e45

! src/hotspot/cpu/zero/vm_version_zero.cpp