[AC Question]

I have installed Android Studio in cent os 6 (its a VM).
I have also installed kvm.
But when I run the AVD Manager I get a error that the file /dev/kvm is missing.

[Rukbat]

You need a KVM designed to run under Linux. (Which means "not the cheap ones".) Most KVMs that use TCP as the connection should run under Linux. (Running inside a VM is another matter. It may just not be possible using the particular VM you're using.)

[dadoubz]

Usually VM software does emulate processor virtualization, so you can run another VM inside your VM. I don't know if VMWare Player does though, have you checked the settings (namely the processor settings) to see if there's a hardware virtualization option?