[parisc-linux] Solved: C110, kernel Panics, still more tears ;-(

[Juergen Braukmann <juergen.braukmann@ruhr-west.de>]

Grant Grundler schrieb:
> 
> Juergen Braukmann wrote:
> > Hi Grant and all,
> >
> > still more tears. I compiled and replaced the kernel, using 2.4.18pa55.
> > I used the setting of ccio_mem_ratio=16, but still my kernel panics with
> > Kernel panic: ccio-dma.c ccio_alloc_range() I/O MMU is out of mapping
> > resources.
> > In interrupt handler - not syncing
> 
> Sorry - my bad - I think I have it backwards.
> Using a smaller value will result in more IOMMU resource.
> 
> > would there be more chance with the ccio_mem_ratio setting of 8?
> 
> Or 2 or 1 even.

I use a setting of 2 now and was able to ftp a good collection of
kernel.tar.gz files without crash. I hope this darn baby is *not*
playing tricks on me now, since I was once able to ftp a 200 MB file
without crash too. But all left to do is wait and watch and declare it
fixed for the time beeing.

> 
> > there a way to use more than one Kernel alternativly and select it at
> > boottime with palo? Is there an example palo.conf somewhere?
> 
> Yes. Interrupt the boot process before palo is loaded and then
> type "Y" to "Interact with IPL (Y/N/Q)?" question. You can then
> specify which vmlinux to boot.
> 
yep. I started to use "easy" names (as you suggested). I had to try
that, since my default kernel had the setting of 16 and crashes saving a
3MB kernel...

Thanks to all involved to solve this problem.


Juergen

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