Dear Matthias Weisser,

In message <4da360a9.10...@arcor.de> you wrote:
>
> I can't come up with an example where this may produce a problem but who
> knows which exotic hardware is out there which expects that a memcpy
> with identical src and dst addresses is executed exactly in that way.
> But maybe we can ignore this and let these exotic boards come up with a
> solution handling that special situation.

Right.

> > While we are at it, we should do the same with bcopy() and memmove(),
> > too.
> 
> Maybe I can post a patch tomorrow. The only thing which I can't handle
> are architecture specific memcpy/memmove/... functions besides ARM.

That's fine. Optimized arch specific code probably already implements
such a shortcut anyway.

Best regards,

Wolfgang Denk

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