[ksp-atlas]

A hypervisor does what you want, though note that the low level ones that run as the OS are generally geared towards servers, not desktops

[globalnode]

You're talking about a type 1 hypervisor from what I've just read. Linux KVM/QEMU looks interesting. Do you think win 11 would work at near native speeds under this?

[fsflover]

AFAIK it works reasonably well under Qubes OS with a relatively simple installation.