[Cbe-oss-dev] [RFC 1/3] powerpc: __copy_tofrom_user tweaked for Cell

[Geert Uytterhoeven]

On Mon, 23 Jun 2008, Gunnar von Boehn wrote:
> > The problem is that the dcbz will generate the alignment exception
> > regardless of whether the data is actually unaligned or not.
> > Once you're on that code path, performance can't be good, can it?
> 
> In which case will DCBZ create an aligned exception?

When using dcbz on uncached memory, IIRC.

With kind regards,

Geert Uytterhoeven
Software Architect

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