Re: [PATCH 2.6.29-rc7 2/2] x86: disallow DAC for MCP51 PCI bridge

[Alan Cox]

> x86 is blacklisting DAC for everything VIA. :-)

I'd assume that comes from published docs given VIA actually publish
stuff if you ask nicely.
> 
> * MCP51 is a very old chipset at this point (it's circa 2005).  Not
>   many machine would be running with >4GB memory to begin with.
> 
> * Given the above and scarcity of DAC on most end user machines
>   (nothing on MCP51 does DAC by default), lack of reports isn't too
>   surprising.
> 
> * The board doesn't have a 64bit connector.  It can't be dodgy
>   connector and sil24 is known to behave well with DAC.  The failure
>   being specific to the particular machine doesn't seem likely.
> 
> I'll ping nvidia about it but I think your bar is too high.

I don't think wanting to see *two* examples is a high bar.
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