I asked this question in a different community space but it seemed like this is a more appropriate home.
I'm trying to configure the performance counters for the Cortex-A57 and I'm very confused. The technical reference manual alludes to accesses being different on a 64 bit system. Do I need to do all of the configurations to set up and read the counters using MSR/MRS commands or is it still required to MCR p15 and configure that way? The manual doesn't explicitly state how to configure the individual counters so and any help would be appreciated.