Re: ARM CPU part numbers

W dniu 05.09.2011 11:28, Andrew Stubbs pisze:

Next question ... is /proc/cpuinfo really the best way to detect this?

I mean, is auxv a better approach? Or something else? What's the most efficient, and most stable API to read the CPU architecture, CPU model, and FPU/NEON availability?

There's some worry among the toolchain team that /proc/cpuinfo is a somewhat fragile and inefficient way to achieve this goal. Some insight from the kernel experts would be helpful!

Remember that there are cpus like imx51 to2 which have broken neon and this is shown in /proc/cpuinfo (no neon flag for them). So using own tests should also check what kernel has to say.