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Date: Sun, 15 Sep 2002 15:14:48 -0500
From: Marvin Stodolsky <stodolsk@rcn.com>
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To: Tom Crummey <tom@ee.ucl.ac.uk>,
 	"Igor V. Kovalenko" <garrison@mail.ru>
CC: discuss@linmodems.org
Subject: Re: SMP and ltmodem-8.22a5
References: <3D849AC9.7246F96F@ee.ucl.ac.uk>
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Tom,
  The a4 part of the 8.22a4 designation is irrelevant as it only
designates the installation code.
But the drivers compiled with 8.22 core code and SMP enabled give no
hindrane on a single processor PC. That I throughly checked.  

Volunteers were requested to check behavior on SMP PCs. But Igor V.
Kovalenko <garrison@mail.ru>
was last/only report before you.  I've appended the relevant section
below, wherein the last critical comment is:
      with "nosmp" or "noapic" options all is working OK.

So you should try out the noapic kernel option.
Please report back after that testing.

Igor, 
  Could you please return some details about your motherboard and any
other configuration issues which may be relevant.


MarvS
ltmodem co-maintainer

> Tom Crummey wrote:
> 
> Hello,
> 
> I've been following the list with regard to whether ltmodem-8.22
> actually does work with a multi-processor system or not. As far as I can
> tell, up until version a4 it does not. The symptoms I
> see are that the modem will connect, but then after a few seconds no
> more traffic will flow. This has
> been reported by garrison@mail.ru
> 
> I've not tried the noapic option in the kernel.
> 
> However, has anyone actually got a multiprocessor system where the modem
> works properly with
> the ltmodem-8.22 (any version) package?
> 
> --
> Tom.
> 
> ----------------------------------------------------------------------------
>  Tom Crummey, Systems and Network Manager,      EMAIL: tom@ee.ucl.ac.uk
>  Department of Electronic and Electrical Engineering,
>  University College London,                       TEL: +44 (0)20 7679 3898
>  Torrington Place,                                FAX: +44 (0)20 7388 9325
>  London, UK, WC1E 7JE.
> ----------------------------------------------------------------------------
Subject: 
       RE: RE: ltmodem 8.22 and Linux SMP
   Date: 
       Fri, 07 Jun 2002 22:05:44 +0400
  From: 
       "Igor V. Kovalenko" <garrison@mail.ru>
    To: 
       discuss@linmodems.org


I have now the card swapped to another slot so it is on IRQ 9 now.
It was sharing IRQ 12 with VIA USB devices before configuration change.

Seems like there is no change in behaviour, i.e. with full Linux SMP
the remote modem eventually hangs up, with "nosmp" or "noapic" options
all is working OK. I'm using this right now.

-- 
Regards,
Igor V. Kovalenko