From: Will Deacon <will.deacon@arm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@kernel.org, linux-kernel@vger.kernel.org,
longman@redhat.com, andrea.parri@amarulasolutions.com,
tglx@linutronix.de, bigeasy@linutronix.de
Subject: Re: [PATCH v2 4/4] locking/qspinlock, x86: Provide liveness guarantee
Date: Fri, 12 Oct 2018 10:22:09 +0100 [thread overview]
Message-ID: <20181012092209.GE12289@arm.com> (raw)
In-Reply-To: <20181010161257.GD17340@arm.com>
On Wed, Oct 10, 2018 at 05:12:57PM +0100, Will Deacon wrote:
> On Wed, Oct 03, 2018 at 03:03:01PM +0200, Peter Zijlstra wrote:
> > arch/x86/include/asm/qspinlock.h | 15 +++++++++++++++
> > kernel/locking/qspinlock.c | 16 +++++++++++++++-
> > 2 files changed, 30 insertions(+), 1 deletion(-)
>
> I've failed to break this by thinking really hard, so I've updated Catalin's
> TLA model to see if the tools are still happy. I'll get back to you once
> they've finished chewing on it.
The model is happy, so this doesn't introduce any "bad" SC behaviours.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Will
next prev parent reply other threads:[~2018-10-12 9:22 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-03 13:02 [PATCH v2 0/4] locking/qspinlock, x86: Improve determinism for x86 Peter Zijlstra
2018-10-03 13:02 ` [PATCH v2 1/4] locking/qspinlock: Re-order code Peter Zijlstra
2018-10-03 13:02 ` [PATCH v2 2/4] locking/qspinlock: Rework some comments Peter Zijlstra
2018-10-10 16:13 ` Will Deacon
2018-10-03 13:03 ` [PATCH v2 3/4] x86/asm: Simplify GEN_*_RMWcc() macros Peter Zijlstra
2018-10-04 9:18 ` Peter Zijlstra
2018-10-16 16:05 ` [tip:locking/core] x86/asm: 'Simplify' " tip-bot for Peter Zijlstra
2018-10-03 13:03 ` [PATCH v2 4/4] locking/qspinlock, x86: Provide liveness guarantee Peter Zijlstra
2018-10-10 16:12 ` Will Deacon
2018-10-12 9:22 ` Will Deacon [this message]
2018-10-16 16:06 ` [tip:locking/core] " tip-bot for Peter Zijlstra
2018-10-16 16:04 ` [tip:locking/core] locking/qspinlock: Re-order code tip-bot for Peter Zijlstra
2018-10-16 16:04 ` [tip:locking/core] locking/qspinlock: Rework some comments tip-bot for Peter Zijlstra
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