How to check that AES-NI is supported by my CPU?

Look in /proc/cpuinfo. If you have the aes flag then your CPU has AES support.

You can use this command:

grep aes /proc/cpuinfo

If you have some output, which will be like

flags : a bunch of flags aes another bunch of flags

, then you have AES.

There's also the cpuid utility available on a number of OS's.

cpuid | grep -i aes
  AES instruction                         = true

Here's the list. There are 247 CPU models with that feature. With Linux, you can check by looking for the aes flag in /proc/cpuinfo. Or you can check what model you have against this list.