Re: [Qemu-devel] [PATCH v2] accel: forbid early use of kvm_enabled() and friends

[Paolo Bonzini]

On 29/06/2018 13:42, Cédric Le Goater wrote:
>> Yeah, doing anything non-trivial in class_init is just asking for trouble,
>> as conceivably nothing is initialized at that point. 
>
> May be we should consider having a set of binaries for each accelerator,
> KVM, TCG, etc. That would simplify a lot of the init path of the machines
> and also of some of the models which are trying to initialize in one mode 
> or the other.

That would prevent things like "-machine accel=kvm:tcg", which try KVM
and fall back to TCG if it is not available.

Paolo

> Hybrid machines would still be possible, like using KVM for the CPUs and
> an emulated model for some device. But the definitions would be static, 
> not guessed from what is available or not.