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SubjectRe: [PATCH][2.4.27] PowerPC 745x data corruption bug fix
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On Mon, 2004-08-16 at 18:05, Tom Rini wrote:
> On Mon, Aug 16, 2004 at 12:04:08PM +0200, Mikael Pettersson wrote:

> > So previously a CPU got _PAGE_COHERENT on SMP.
> > Now a CPU gets _PAGE_COHERENT on (SMP || 745x).
> >
> > I suspect the CONFIG_MPC10X_BRIDGE is an attempt to enable
> > the fix in some other cases too.
>
> The reason CPU_FTR_NEED_COHERENT was added was to work around an MPC107
> (now Tsi107) errata. See
> http://216.239.57.104/search?q=cache:1MDn1X8ieUUJ:www.geocrawler.com/archives/3/8358/2002/9/100/9559482/+%22Adrian+Cox%22+errata&hl=en
> (original is conn refused right now).

I've now written some notes to explain these issues, in case it comes up
again:
http://www.humboldt.co.uk/Notes/mpc107cache.html

- Adrian Cox
Humboldt Solutions Ltd.


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