memcpy and prefetch

[Michael Sundius <msundius@cisco.com>]

I know this topic has been written about but so excuse me if I am 
redundant.
I saw lots of talk in the archives but I don't know if a solution was 
ever arrived
at. so:

what is the current state of the use of prefetch in memcpy()? it seems that
it is #undef-ed if CONFIG_DMA_COHERENT is not turned on.

is this still because the memcpy does not check to prevent a prefetch of
addresses beyond the end of the buffer?

If so, what was the reason a solution was abandoned....

also  has anyone out there written a memcopy that does use prefetch
intelligently (for mips32 that is)?


thanks
Mike



    - - - - -                              Cisco                            - - - - -         
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