[ANNOUNCE] v4.18.16-rt9

Dear RT folks!

I'm pleased to announce the v4.18.16-rt9 patch set.

Changes since v4.18.16-rt8:

  - The RCU fix, which was introduced in v4.18.7-rt5, leads to a lockdep
    warning during CPU hotplug. After a discussion with upstream it was
    suggested to revert the change that lead to a problem in -RT.

Known issues
     - A warning triggered in "rcu_note_context_switch" originated from
       SyS_timer_gettime(). The issue was always there, it is now
       visible. Reported by Grygorii Strashko and Daniel Wagner.

The delta patch against v4.18.16-rt8 is appended below and can be found here:

     https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.18/incr/patch-4.18.16-rt8-rt9.patch.xz

You can get this release via the git tree at:

    git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.18.16-rt9

The RT patch against v4.18.16 can be found here:

    https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patch-4.18.16-rt9.patch.xz

The split quilt queue is available at:

    https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz

Sebastian

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>