[openib-general] Re: SDP: device mthca0 does not support fast memory regions

[Michael S. Tsirkin]

Quoting r. Troy Benjegerdes <hozer at hozed.org>:
> Subject: Re: SDP: device mthca0 does not support fast memory regions
> 
> On Thu, Jun 16, 2005 at 10:03:55PM +0300, Michael S. Tsirkin wrote:
> > Quoting r. Libor Michalek <libor at topspin.com>:
> > > Subject: Re: SDP: device mthca0 does not support fast memory regions
> > > 
> > > On Wed, Jun 15, 2005 at 04:30:47PM -0500, Troy Benjegerdes wrote:
> > > > I'm getting a 'SDP: device mthca0 does nto support fast memory regions'
> > > > error on PPC64 systems.. Is there something that needs to be done for
> > > > PPC, or could I have an older version of the mthca module hanging
> > > > around?
> > > 
> > >   I'm not sure about the state or plans for FMR support on PPC64, Roland
> > > will have a better idea. 
> > 
> > Should just work AFAIK.
> > But maybe your card hides the onboard memory?
> > Try lspci -vv to see if the card has
> > the huge bar (100Mbyte or more) corresponding to that memory.
> 
> Yes, the DDR is hidden on a couple of the machines, since they are IBM
> Power4 systems, which have some stupid issue with the firmware.
> 
> However, I'm getting the following problem on an Xserve G5:
> 
> xl0:~# cat /proc/version
> Linux version 2.6.11.11-G5 (root at xl0.fast) (gcc version 3.4.2) #1 SMP
> Wed Jun 812:11:29 CDT 2005
> 
> ib_mthca: Mellanox InfiniBand HCA driver v0.06-pre (November 8, 2004)
> ib_mthca: Initializing Mellanox Technology MT23108 InfiniHost
> (0001:07:00.0)
> WARN: : Failed to find lock pointer.
> WARN: : Error <-22> initializing memory locking.
> WARN: : Error <-22> initializing SDP IOCB table.
> WARN: : INIT: Error <-22> initializing connection table.
> 

Some issue with the hack used currently to mlock pages.
You can try my patch

http://openib.org/pipermail/openib-general/2005-May/006322.html

that replaces that with get_user_pages (Libor is waiting on this patch
till we solve the aio/synch completion race).


-- 
MST