From: Roland Dreier <rdreier@cisco.com>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: "Barnes\, Jesse" <jesse.barnes@intel.com>, Matthew Wilcox <matthew@wil.cx>,
       Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
       general@lists.openfabrics.org, linux-kernel@vger.kernel.org
Subject: Re: mthca double free irqs
References: <86802c440906111945n2a42dc94mf08bd2b1a252842f@mail.gmail.com>
Date: Fri, 12 Jun 2009 07:33:30 -0700
In-Reply-To: <86802c440906111945n2a42dc94mf08bd2b1a252842f@mail.gmail.com>
	(Yinghai Lu's message of "Thu, 11 Jun 2009 19:45:21 -0700")
Message-ID: <adafxe51pz9.fsf@cisco.com>
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By the way, can you try this with the ib_mthca module option
"msi_x=0" -- because I see

 > [  606.538429] ib_mthca 0000:c4:00.0: NOP command failed to generate
 > interrupt (IRQ 234).
 > [  606.543348] ib_mthca 0000:c4:00.0: Trying again with MSI-X disabled.

But perhaps the fallback to non-MSI-X in the driver is messing things
up.  Also you have:

 > [  606.222053] ib_mthca 0000:c4:00.0: HCA FW version 4.6.002 is old
 > (4.8.200 is current).

So updating the HCA firmware likely wouldn't hurt.

 - R.
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