No, you just sometimes issue twice as many flush requests as necessary. You can't flush or invalidate half a cache line, since the data is stored in units of ca

No, you just sometimes issue twice as many flush requests as necessary. You can't flush or invalidate half a cache line, since the data is stored in units of cache lines. In theory I think you could just invalidate the addresses byte for byte, ignoring the cache line size, but I assume the performance hit would be noticeable.