Re: 2.6.10-mm1-V0.7.34-01 ACPI err in dmesg

[Randy.Dunlap]

Ingo Molnar wrote:
> * Gene Heskett <gene.heskett@xxxxxxxxxxx> wrote:
>
>
> >  Normal zone: 225280 pages, LIFO batch:16
> >  HighMem zone: 32752 pages, LIFO batch:7
> > DMI 2.2 present.
> > __iounmap: bad address c00f0000  <-why?
> > ACPI: RSDP (v000 Nvidia                                ) @ 0x000f7220
>
>
> I have no idea what is causing this. If it still occurs with recent
> kernels then stick a WARN_ON(1) into __iounmap()'s error path, to get a
> stack dump? It is almost certainly not related to -RT.

There was a thread a few weeks ago about this same message (afaik).
The answer then was something like "the __iounmap() call is happening
very early, before the unmap machinery (data/structs) have been
set up for it."  (but I don't know that first-hand, just repeating
close to what I read.)

--
~Randy
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