From: Anton Blanchard <anton@samba.org>
To: Patrick Finnegan <pat@computer-refuge.org>
Cc: paulus@samba.org,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: Problem with Infiniband adapter on IBM p550
Date: Thu, 4 Nov 2010 00:34:44 +1100 [thread overview]
Message-ID: <20101104003444.5fff5935@kryten> (raw)
In-Reply-To: <201011022315.04291.pat@computer-refuge.org>
Hi,
> > Now, I think this is the problem.
> >
> > The "assigned-addresses" property seems to indicate that the
> > firmware only assigned BAR 4 and didn't assign anything to the
> > other ones.
> >
> > I don't know why, but it definitely looks like a firmware bug to me.
> > On those machines, PCI resource assignment is under hypervisor
> > control and so Linux cannot re-assign missing resources itself.
> >
> > I'll see if I can find a FW person to shed some light on this.
> >
> > Can you provide me (privately maybe) with the FW version on the
> > machine ?
>
> Ben,
>
> Have you found out anything more on this (firmware) bug?
Firmware has the concept of "super slots" which allow larger memory
windows and TCE tables. Section 3.4.3 explains it:
http://www.redbooks.ibm.com/redpapers/pdfs/redp4095.pdf
Anton
next prev parent reply other threads:[~2010-11-03 13:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-08 3:24 Problem with Infiniband adapter on IBM p550 Patrick Finnegan
2010-10-08 5:41 ` Benjamin Herrenschmidt
2010-10-08 5:45 ` Benjamin Herrenschmidt
2010-11-03 3:15 ` Patrick Finnegan
2010-11-03 13:34 ` Anton Blanchard [this message]
2010-11-03 14:43 ` Patrick Finnegan
2010-11-03 13:46 ` Benjamin Herrenschmidt
-- strict thread matches above, loose matches on Subject: below --
2010-10-08 2:57 Patrick Finnegan
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