Significance of CPU type?

hverbeek

Member
Feb 14, 2011
40
1
8
A few days ago I had to change the CPU type of a VM to 'host' in order to give it access to the CPU's AES-NI engine. Now I see that pve-2.3 will change the default CPU type to 'KVM64'.

Stupid question: I understand that some OS uses hardware detection to lock in licenses (Windows I think), and there I see the purpose of providing a "stable" CPU even if the host changes. But are there other reasons why one would "define" the CPU type? What is the significance of the CPU types?
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!