On Mon, Apr 27, 2009 at 5:23 PM, nathan binkert <[email protected]> wrote:
> > It seems fine to me, however I'm surprised that there is a functional > > request that ends up in the PhysicalMemory that doesn't need a > > response. The only thing I could imagine falling into this category is > > a Functional Writeback if you were attempting to flush the caches > > before a checkpoint or something similar. > > Does a functional write from the debugger or something require a response? > Actually devices sinking functional writes should not convert the packet to a response as the packet needs to be propagated to any other device that might have a copy of the data (e.g., a cache). It shouldn't hurt to generate a response on a functional read though. Overall I don't see anything wrong with Cliff's patch, but I'd have to understand the bug it's addressing a little better to know whether it's really the right fix for that bug or not. Steve
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