Re: ohci1394_dma=early crash since 2.6.32 (was Re: [Bug #14487]PANIC: early exception 08 rip 246:10 error ffffffff810251b5 cr2 0)

[Justin P. Mattock]

On 02/04/10 01:35, Jan Beulich wrote:
> > > > "Justin P. Mattock"<justinmattock@xxxxxxxxx>  04.02.10 10:17>>>
> > so something is using __native_set_fixmap
> > that's hitting some memory address then
> > set_fixmap_nocache(ohci1394_dma=early)
> > fires off hitting the same?
>
> No, afaict it is the ohci1394_dma=early code itself hitting that path.
>
> Jan

alright.. looking at init_ohci1394_dma.c
I see:

ohci.registers = (void *)fix_to_virt(FIX_OHCI1394_BASE);

then I think it calls:

set_fixmap_nocache(FIX_OHCI1394_BASE, ohci_base);

I'm guessing somewhere with the fix_to_virt might be something
(but could be wrong);

Justin P. Mattock
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