From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
Michael Ellerman <michaele@au1.ibm.com>,
Ameen Rahman <ameen.rahman@qlogic.com>
Subject: Re: MSI-X vector allocation failure in upstream kernel
Date: Fri, 08 Oct 2010 12:26:12 +1100 [thread overview]
Message-ID: <1286501172.2463.395.camel@pasglop> (raw)
In-Reply-To: <9101728E-3FFC-457E-AF5B-87B2037FEC32@qlogic.com>
On Tue, 2010-10-05 at 10:18 -0700, Anirban Chakraborty wrote:
> Hi All,
>
> I am trying to test qlcnic driver (for 10Gb QLogic network adapter) on a Power 6 system
> (IBM P 520, System type 8203) with upstream kernel and I do see that the kernel is
> not able to allocate any MSI-X vectors. The driver requests for 4 vectors in pci_enable_msix,
> which returns 2. The driver again attempts, this time for 2 vectors but the kernel can't allocate
> and it returns a value of 0xfffffffd. I upgraded the system FW to 01EL350 (from 01EL340)
> just to make sure if MSI-X is enabled in the system. Is there anything that I am missing?
>
> Any pointers will be highly appreciated.
I think the people who can help you at the moment are on vacation :-)
Can you make sure kernel debug is enabled and you have "debug" on the
kernel command line, and send the full dmesg log of what's going on ?
Hopefully, Michael will be back next week and will be able to have a
look at it.
Cheers,
Ben.
next prev parent reply other threads:[~2010-10-08 1:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-05 17:18 MSI-X vector allocation failure in upstream kernel Anirban Chakraborty
2010-10-08 1:26 ` Benjamin Herrenschmidt [this message]
2010-10-13 1:51 ` Michael Ellerman
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