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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: stable@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
        Will Deacon <will.deacon@arm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Daniel Wagner <daniel.wagner@siemens.com>
Subject: 
Date: Thu, 13 Dec 2018 15:09:15 +0100
Message-Id: <20181213140925.6179-1-bigeasy@linutronix.de>
Reply-To: [PATCH STABLE v4.9 00/10], Backport, for,
          cache line starvation on x86
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Hi,

this is a backport of commit 7aa54be297655 ("locking/qspinlock, x86:
Provide liveness guarantee") for the v4.9 stable tree.
For the v4.4 tree the ARCH_USE_QUEUED_SPINLOCKS option got disabled on
x86.
For v4.9 it has been decided to do a minimal backport of the final fix
(including all its dependencies).
With this backport I can't reproduce the issue in the latest v4.9-RT
tree. I was able to boot (and use) an arm64 box with these patches so it
is not broken in an abvious way.

Sebastian