zlacker

It's what runs above the vms that is the distinction. For xen it has its own kernel instead of running Linux as the hypervisor and host system. Xen still uses Linux typically as the domain zero as it calls it for doing control and setup but it doesn't necessarily have full access to all the hardware on its own.

>>simcop+(OP)
I can't find information online. Does xen really has it's own, written from scratch kernel or is it based on some other os?

>>tryauu+VU1
Completely it's own from scratch. It's a very simple, relative to full Linux or other OS, kernel/hypervisor. It's built to load what it calls the Dom0 system, which it gives a communication channel to to start up other virtual systems that it calls DomU. This in theory lets you use any OS as the Dom0 for initializing everything (Linux, *BSD, even Windows I think) as long as there's some kind of support for that communications channel to tell the Xen kernel to start up another system.

https://wiki.xenproject.org/wiki/Xen_Project_Software_Overvi...