[QUESTION] Enable coherency for all pages on 83xx to fix PCI data corruption

[Liu Dave-r63238]

> This was to address PCI5 if I remember correctly.
> 
> - kumar
> 
> On Aug 28, 2006, at 2:49 AM, Liu Dave-r63238 wrote:
> 
> > All,
> >
> > I want to know which PCI errata is solved by this patch and if this 
> > patch did test on real hardware.
> >
> > I know this patch turn on the 'M' bit -memory coherency.
> > But I don't believe this can solved the "PCI read multi-line"
> > errata.
> >
> > -DAve
<snip>

I also don't believe this patch can solve the PCI5 errata, The PCI5
description:

When external PCI devices try to read from the memory which is defined
as
prefetchable and where the transaction is more than one cache line,
there
may be data corruption.

-DAve