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Date: Tue, 5 Jun 2007 11:33:01 -0700
From: "Darrick J. Wong" <djwong@us.ibm.com>
To: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: linux-kernel@vger.kernel.org, ebiederm@xmission.com
Subject: Re: Device hang when offlining a CPU due to IRQ misrouting
Message-ID: <20070605183300.GD12782@tree.beaverton.ibm.com>
References: <20070601004427.GI30788@tree.beaverton.ibm.com> <20070605172310.GD17143@linux-os.sc.intel.com> <20070605173647.GC12782@tree.beaverton.ibm.com> <20070605181342.GE17143@linux-os.sc.intel.com>
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On Tue, Jun 05, 2007 at 11:13:42AM -0700, Siddha, Suresh B wrote:
> I see. Your system should have 4 or 8 logical cpu's right. So you must be
> using logical flat mode, right?

I believe so.  The system has two Xeon 5150s with an Intel 5000 chipset
of some sort.

> When this bug happens, what does /proc/irq/<irq-no>/smp_affinity show?

root@elm3a188:~# cat /proc/irq/114/smp_affinity=20
02

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