What is the truth of this ? I would really like to know if my x86 'linux PC', is actually running another 'hypervisor' OS that runs Linux - it seems like a rec

What is the truth of this ? I would really like to know if my x86 'linux PC', is actually running another 'hypervisor' OS that runs Linux - it seems like a recipe for security vulnerabilities. If so, there are a lot of Qns : - what OS, is it up to date ? - can this OS be communicated with from the network ? - on which chips does it run ? - can it be re-flashed / upgraded / replaced ? - can it interrupt/schedule my normal os ? - how much CPU/power does it use ? I would certainly trust an Oxide supplied (Rust) bare metal open-source low-level OS to host linux vms on my dev machine, than say, a totally opaque binary blob that the US government has forbidden xyz company from talking about.. just to speculate wildly. I also think Oxide has wider market that just the server space - eg. one has to do all sorts of shenanigans to get a core freed up so that you can run timing/latency sensitive apps, without getting interrupted by linux threads doing noisy housekeeping on each core.