On Tue, Mar 8, 2011 at 10:07 AM, Adam Jacobvitz <[email protected]> wrote:

> Two Questions:
>
> 1) How are blocks written into the L1 or L2 cache when there is no block to
> replace? I see this thing called a "tempBlock" but I can't seem to find the
> code that writes it into the cache...
>

It isn't written in... that's the point, if there's no block to replace,
then you can't write it into the cache.  In practice I don't know if that
ever happens though.


> 2) In the M5 Cache structure (not Ruby) I can't seem to find any notion of
> a "way". Does the cache structure know what a "way" is?
>

Not really, the code is organized based on sets rather than ways.  See
src/mem/cache/tags/cacheset.hh.

Steve


>
> Thanks!
>
> --
> Adam Jacobvitz
> Graduate Student
> Duke Computer Architecture Group
> Electrical and Computer Engineering Department
> Duke University, North Carolina
> http://arch.cs.duke.edu/
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