Re: AMD64 dma_alloc_coherent crashes on non PCI device (was SATA open bugs)

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> > At the higher level someone passed us a device and some mappings and
> > function methods and said "this is an IDE controller"
> 
> Ok you're stabbing in the dark. I guess more debugging is needed.

Huh ?

> > > But at least on x86-64 the device is likely DMA capable. At least
> > > PCMCIA usually is.  Near all devices are DMA capable, except perhaps
> > 
> > PCMCIA usally isn't.
> 
> Hmm?

PCMCIA is not DMA capable, and indeed passing a pcmcia device to AMD64
boxes dma_alloc_ functions causes an Oops.

> I'm not blaming libata here, just whoever gave that bogus device to it.

For the simple example the PCMCIA layer.

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