git: openjdk/jdk22u: master: 8321075: RISC-V: UseSystemMemoryBarrier lacking proper OS support

[Robbin Ehn]

Changeset: cebe57d4
Author:    Robbin Ehn <rehn at openjdk.org>
Date:      2024-03-07 08:07:03 +0000
URL:       https://git.openjdk.org/jdk22u/commit/cebe57d4577f4ae32ce24c3f868c82488f2aa4fa

8321075: RISC-V: UseSystemMemoryBarrier lacking proper OS support

Backport-of: 68eb5a1df5afdc011aa467f1c723a8792532dd3f

! src/hotspot/os/linux/os_linux.cpp
! src/hotspot/os/linux/os_linux.hpp
! src/hotspot/os/linux/systemMemoryBarrier_linux.cpp