On Wed, May 17, 2000, Karsten Muehlmann <[EMAIL PROTECTED]>
wrote:
> Hello Johannes,
>
> > You aren't using SMP or something like that are you?
>
> =:-/ I do. Briefly after submitting the message, I realized, I had forgotten to
>include some
> potentially important information about my system:
> - 4 x XEON SMP on an Intel NX board
> - 4GB memory support, 4GB physical memory
>
> > The CPiA driver from webcam.sourceforge.net doesn't automatically handle SMP
>kernels.
> Ok. What a pity =;-)
>
> > Also, you may want to use the CPiA driver which is in the 2.3.99 series
> > now since it won't have any of these weird gotchas.
> Well, I didn't find any differences in locking or memory management between cpia 1.0
>and the version
> in the pre5 kernel?
>
> Ok, what can I do, switch to a "normal" machine, single processor, less memory?
The problem is that the page structures are different under SMP kernels
than under Uniprocessor kernels.
So, when we try to do some magic and the module is expecting
uniprocessor like structures but what really exists are SMP like
structures, things go boom.
There's a bunch of different things you can do:
- Modify the Makefile's in cpia-1.0 to define SMP directives correctly
- Use a uniprocessor kernel
- Use the 2.3.99 version of cpia in the kernel which will automatically
have all of the SMP directives defined for you
JE
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