From: Sasha Levin <sashal@kernel.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will.deacon@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Daniel Wagner <daniel.wagner@siemens.com>
Subject: Re: [PATCH STABLE v4.9 00/10] Backport for "cache line starvation on x86
Date: Tue, 18 Dec 2018 17:35:27 -0500 [thread overview]
Message-ID: <20181218223527.GI2746@sasha-vm> (raw)
In-Reply-To: <20181218221049.6816-1-bigeasy@linutronix.de>
On Tue, Dec 18, 2018 at 11:10:39PM +0100, Sebastian Andrzej Siewior wrote:
>[ resending without broken headers ]
>
>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.
Queued up, thank you.
I've also grabbed 6cc65be4f6f2a ("locking/qspinlock: Fix build for
anonymous union in older GCC compilers").
--
Thanks,
Sasha
prev parent reply other threads:[~2018-12-18 22:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-18 22:10 [PATCH STABLE v4.9 00/10] Backport for "cache line starvation on x86 Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 01/10] locking: Remove smp_read_barrier_depends() from queued_spin_lock_slowpath() Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 02/10] locking/qspinlock: Ensure node is initialised before updating prev->next Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 03/10] locking/qspinlock: Bound spinning on pending->locked transition in slowpath Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 04/10] locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock' Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 05/10] locking/qspinlock: Remove unbounded cmpxchg() loop from locking slowpath Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 06/10] locking/qspinlock: Remove duplicate clear_pending() function from PV code Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 07/10] locking/qspinlock: Kill cmpxchg() loop when claiming lock from head of queue Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 08/10] locking/qspinlock: Re-order code Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 09/10] locking/qspinlock/x86: Increase _Q_PENDING_LOOPS upper bound Sebastian Andrzej Siewior
2018-12-18 22:10 ` [PATCH STABLE v4.9 10/10] locking/qspinlock, x86: Provide liveness guarantee Sebastian Andrzej Siewior
2018-12-18 22:35 ` Sasha Levin [this message]
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