On Tue, 2008-02-12 at 22:12 +0000, Alan Cox wrote:
> > Has anyone else reported a problem like this?  It requires
> > non-coherent DMA, and a lack of a cache invalidate instruction, and
> > one of the drivers that has this problem (it looks like sata_qstor
> > does too, I haven't looked at others), so maybe that doesn't cover
> > any other architectures.
> Nobody has, not even PA-RISC which is normally guaranteed to make life
> miserable in the caching area but I agree entirely with your diagnosis
> and that buffer should indeed be marked cache aligned

I tell you what ... find me a parisc box that actually has IDE and we
might have told you ...

(actually, the pa8800's have IDE CD's on a cmd640 chip, but that oopses
on boot for no reason we've tracked yet).


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