From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: Commit 81a43adae3b9 (locking/mutex: Use acquire/release semantics) causing failures on arm64 (ThunderX)
Date: Fri, 11 Dec 2015 09:59:46 +0000 [thread overview]
Message-ID: <20151211095946.GC18828@arm.com> (raw)
In-Reply-To: <5669D5F2.5050004@caviumnetworks.com>
On Thu, Dec 10, 2015 at 11:43:46AM -0800, David Daney wrote:
> We are getting soft lockup OOPs on Cavium CN88XX (A.K.A. ThunderX), which is
> an arm64 implementation.
[...]
> At this point it is unknown if this patch is incorrect, or if the underlying
> ARM64 atomic_*_{acquire,release} primitives are defective, or if the problem
> lies elsewhere.
Are you using the ll/sc or lse versions of the atomics? In the case of
the former, are they inline or out-of-line (this depends on whether or
not you've selected CONFIG_ARM64_LSE_ATOMICS and whether or not you have
toolchain support)?
Will
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: David Daney <ddaney@caviumnetworks.com>
Cc: Davidlohr Bueso <dbueso@suse.de>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Ingo Molnar <mingo@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"Pinski, Andrew" <Andrew.Pinski@caviumnetworks.com>
Subject: Re: Commit 81a43adae3b9 (locking/mutex: Use acquire/release semantics) causing failures on arm64 (ThunderX)
Date: Fri, 11 Dec 2015 09:59:46 +0000 [thread overview]
Message-ID: <20151211095946.GC18828@arm.com> (raw)
In-Reply-To: <5669D5F2.5050004@caviumnetworks.com>
On Thu, Dec 10, 2015 at 11:43:46AM -0800, David Daney wrote:
> We are getting soft lockup OOPs on Cavium CN88XX (A.K.A. ThunderX), which is
> an arm64 implementation.
[...]
> At this point it is unknown if this patch is incorrect, or if the underlying
> ARM64 atomic_*_{acquire,release} primitives are defective, or if the problem
> lies elsewhere.
Are you using the ll/sc or lse versions of the atomics? In the case of
the former, are they inline or out-of-line (this depends on whether or
not you've selected CONFIG_ARM64_LSE_ATOMICS and whether or not you have
toolchain support)?
Will
next prev parent reply other threads:[~2015-12-11 9:59 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 19:43 Commit 81a43adae3b9 (locking/mutex: Use acquire/release semantics) causing failures on arm64 (ThunderX) David Daney
2015-12-10 19:43 ` David Daney
[not found] ` <SN1PR07MB21577C72379C8440A208D6BC9EEA0@SN1PR07MB2157.namprd07.prod.outlook.com>
2015-12-11 3:29 ` FW: " Andrew Pinski
2015-12-11 3:29 ` Andrew Pinski
2015-12-11 4:51 ` Andrew Pinski
2015-12-11 4:51 ` Andrew Pinski
2015-12-11 8:41 ` Peter Zijlstra
2015-12-11 8:41 ` Peter Zijlstra
2015-12-11 12:04 ` Will Deacon
2015-12-11 12:04 ` Will Deacon
2015-12-11 12:13 ` Peter Zijlstra
2015-12-11 12:13 ` Peter Zijlstra
2015-12-11 12:18 ` Will Deacon
2015-12-11 12:18 ` Will Deacon
2015-12-11 12:26 ` Peter Zijlstra
2015-12-11 12:26 ` Peter Zijlstra
2015-12-11 13:33 ` Will Deacon
2015-12-11 13:33 ` Will Deacon
2015-12-11 13:48 ` Peter Zijlstra
2015-12-11 13:48 ` Peter Zijlstra
2015-12-11 14:06 ` Will Deacon
2015-12-11 14:06 ` Will Deacon
2015-12-11 17:11 ` Peter Zijlstra
2015-12-11 17:11 ` Peter Zijlstra
2015-12-11 17:24 ` Will Deacon
2015-12-11 17:24 ` Will Deacon
2015-12-11 22:35 ` Paul E. McKenney
2015-12-11 22:35 ` Paul E. McKenney
2015-12-14 18:49 ` One Thousand Gnomes
2015-12-14 20:31 ` Peter Zijlstra
2015-12-15 4:36 ` Paul E. McKenney
2015-12-14 20:28 ` FW: " Peter Zijlstra
2015-12-14 20:28 ` Peter Zijlstra
2015-12-15 4:36 ` Paul E. McKenney
2015-12-15 4:36 ` Paul E. McKenney
2015-12-11 14:17 ` Davidlohr Bueso
2015-12-11 14:17 ` Davidlohr Bueso
2015-12-17 21:52 ` Jeremy Linton
2015-12-17 21:52 ` Jeremy Linton
2015-12-11 7:33 ` Peter Zijlstra
2015-12-11 7:33 ` Peter Zijlstra
2015-12-11 9:59 ` Will Deacon [this message]
2015-12-11 9:59 ` Will Deacon
-- strict thread matches above, loose matches on Subject: below --
2015-12-11 17:43 Andrew Pinski
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