From: Borislav Petkov <borislav.petkov@amd.com>
To: Chen Gong <gong.chen@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Tony Luck <tony.luck@intel.com>,
Borislav Petkov <borislav.petkov@amd.com>, <x86@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [patch 0/5] x86: mce: Bugfixes, cleanups and a new CMCI poll version
Date: Thu, 7 Jun 2012 15:35:49 +0200 [thread overview]
Message-ID: <20120607133549.GH11153@aftab.osrc.amd.com> (raw)
In-Reply-To: <4FD07D8F.5020303@linux.intel.com>
On Thu, Jun 07, 2012 at 06:08:15PM +0800, Chen Gong wrote:
> But during the CPU online/offline test I found an issue. After *STORM*
> mode is entered, it can't come back from *STORM* mode to normal
> interrupt mode. At least there exists such an issue: when *STORM* is
> entered, in the meanwhile, one CPU is offline during this period,
> which means *cmci_storm_on_cpus* can't decrease to 0 because there is
> one bit stuck on this offlined CPU.
Stupid question: do you even want to allow offlining of CPUs while the
storm is raging? IOW, wouldn't it be better to disallow hotplug when the
storm happens so that all online CPUs, which is all CPUs on the system,
can work out the storm conditions faster so that the system gets back to
normal faster...
Thanks.
--
Regards/Gruss,
Boris.
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
GM: Alberto Bozzo
Reg: Dornach, Landkreis Muenchen
HRB Nr. 43632 WEEE Registernr: 129 19551
next prev parent reply other threads:[~2012-06-07 13:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-06 21:53 Thomas Gleixner
2012-06-06 21:53 ` [patch 1/5] x86: mce: Disable preemption when calling raise_local() Thomas Gleixner
2012-06-06 21:53 ` [patch 3/5] x86: mce: Split timer init Thomas Gleixner
2012-06-07 15:18 ` Borislav Petkov
2012-06-20 3:35 ` Hidetoshi Seto
2012-06-06 21:53 ` [patch 2/5] x86: mce: Serialize mce injection Thomas Gleixner
2012-06-06 21:53 ` [patch 4/5] x86: mce: Remove the frozen cases in the hotplug code Thomas Gleixner
2012-06-07 17:49 ` Borislav Petkov
2012-06-06 21:53 ` [patch 5/5] x86: mce: Add cmci poll mode Thomas Gleixner
2012-06-07 18:14 ` Borislav Petkov
2012-06-07 10:08 ` [patch 0/5] x86: mce: Bugfixes, cleanups and a new CMCI poll version Chen Gong
2012-06-07 13:35 ` Borislav Petkov [this message]
2012-06-07 16:22 ` Luck, Tony
2012-06-08 7:49 ` Thomas Gleixner
2012-06-11 5:46 ` Chen Gong
2012-06-11 6:09 ` Chen Gong
2012-06-14 13:49 ` [PATCH] tmp patch to fix hotplug issue in CMCI storm Chen Gong
2012-06-14 14:07 ` Thomas Gleixner
2012-06-15 6:51 ` Chen Gong
2012-06-15 9:55 ` Thomas Gleixner
2012-06-18 6:42 ` Chen Gong
2012-06-18 6:45 ` [PATCH V2] " Chen Gong
2012-06-18 8:00 ` Thomas Gleixner
2012-06-18 10:13 ` Chen Gong
2012-06-18 12:23 ` Thomas Gleixner
2012-06-19 6:05 ` Chen Gong
2012-06-19 6:09 ` [PATCH V3] " Chen Gong
2012-07-04 8:12 ` Chen Gong
2012-07-16 3:16 ` Chen Gong
2012-07-16 8:22 ` Thomas Gleixner
2012-07-17 21:47 ` Chen Gong
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