This is what I got from introduction.
The Denver 2 processors each have 128 KB Instruction and 64 KB Data Level 1 caches; and have a 2MB shared Level 2 unified cache. The Cortex-A57 processors each have 48 KB Instruction and 32 KB Data Level 1 caches; and also have a 2 MB shared Level 2 unified cache.
So in summary, two Denvers have independent L1 cache, shared L2 cache.
four A57 have independent L1 cache, shared L2 chache.
In this case, do we call two Denvers as one CPU with two cores or two CPUs?
Same question with four A57.