In article <6.1.2.0.2.20050312201726.097c2208@3am-software.com>
matt@3am-software.com wrote:

> >Choosing a new address doesn't help for virtual aliases on VIPT cache,
> >I think. What we have to do is to choose an address which have
> >the same VA index with existing mapped one, isn't it?
> 
> Nope.  It only chooses a new address if it's not already mapped.
> Otherwise it returns the currently mapped address.

Hmm, I think we still have to select a proper VA index on
choosing a new address otherwise explicit cache flush will
be required to avoid aliases when the mapped address is
being unmapped.
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Izumi Tsutsui