Gets vcpu mmap size, refactors kvm and vm

[SuchAFuriousDeath]

I think this is rougly what we want. Tbh, I'm not completely sure about the Error::from_raw_os_error.

[SuchAFuriousDeath]

I decided to do a refactor, so Kvm and Vm now have their own wrapper types around OwnedFd. I think this is better because it makes it more clear whata method on kvm and what is a method on vm

[SuchAFuriousDeath]

@ultimaweapon If we only run the game in a vm, how do we deal with multiple threads?

[ultimaweapon]

It will be the same as other kernels. That is, switch between threads when the VM exits due to the time slice used up.

[SuchAFuriousDeath]

Didn't know that was possible. Nice

[SuchAFuriousDeath]

So I guess ... now we just map the module into memory, set the registers and run the KVM_RUN ioctl, right? Roughly

[SuchAFuriousDeath]

+ the scheduler

[ultimaweapon]

We need to fix the process VM to allocate from Ram and setup page table for the game process.

[VocalFan]

@ultimaweapon

IDPS do be broken tho-

[VocalFan]

Yeah you... Never defined it in UI, Ultima xD

[ultimaweapon]

Better to create an issue for this.