Nobody (not even IBM AFAIK) uses coloring anymore so this is moot. ARMv5 isn't even supported by Linux anymore. All modern caches PIPT, VIPT, or even VIVT mus

Nobody (not even IBM AFAIK) uses coloring anymore so this is moot. ARMv5 isn't even supported by Linux anymore. All modern caches PIPT, VIPT, or even VIVT must work with this scheme as it's semantically transparent to virtual memory. The performance of line-crossing accesses is a totally different issue and I would never used this "trick".