Re: PROBLEM REMAINS: [sata_nv ADMA breaks ATAPI] Crash on accessing DVD-RAM

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On Sun, 2008-01-13 at 13:33 +0000, Alan Cox wrote:
> > Other than that, I guess the solutions would be to just set a 32-bit 
> > mask on the device if either port has an ATAPI device connected (which 
> > is fairly ugly, considering that you could do things like hotplug an 
> > ATAPI device when the other port was in use, for example), or do 
> > something to prevent requests from reaching this point with >4GB 
> > addresses in the first place..
> 
> With 2.6.24 almost released I think that is a must do for the moment and
> since we also have hotplugging fo devices it might be easier for .24 to
> just set a 32bit DMA mask and be done with it, then fix it later.

Yes, I concur for the short term.  The other two possible courses of
action either involve long discussions (the different device one) or
you'll never quite be sure you got all the paths (the GFP_DMA32 one).
At least with this one, you know everything will work.

James


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