linux-kernel - Re: mellanox mlx4

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Message-ID: <20120801202840.GM5470@ics.muni.cz>
Date:	Wed, 1 Aug 2012 22:28:40 +0200
From:	Lukas Hejtmanek <xhejtman@....muni.cz>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Roland Dreier <roland@...nel.org>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: mellanox mlx4_core and SR-IOV

On Wed, Aug 01, 2012 at 11:29:02AM -0700, Yinghai Lu wrote:
> On Wed, Aug 1, 2012 at 10:37 AM, Roland Dreier <roland@...nel.org> wrote:
> > On Wed, Aug 1, 2012 at 6:38 AM, Lukas Hejtmanek <xhejtman@....muni.cz> wrote:
> >> [    3.558296] mlx4_core 0000:02:00.0: not enough MMIO resources for SR-IOV (nres: 0, iov->nres: 1)
> >
> > This comes from the core sriov_enable() function, not anything in mlx4.
> > (although my kernel doesn't have the print of nres in that message)
> >
> > Not sure what it means.
> 
> iov bar is not assigned by BIOS, and kernel can not find range for it too.
> 
> Lukas, can you post whole boot log with PCI_DEBUG enabled? That will
> tell exact why kernel does not assign them.
> 
> Recent kernel from 3.4... should enable realloc when SRIOV bar is not assigned.

here is full boot log.
http://www.fi.muni.cz/~xhejtman/dmesg.log

weird with PCI_DEBUG it does not load mlx driver at all..

-- 
Lukáš Hejtmánek
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