Re: Softmmu conflict with KVM?

[Mark Cave-Ayland]

On 25/02/2021 17:41, Jd Lyons wrote:

> Something I’ve noticed with Qemu-ppc and KVM on real PPC hardware, it’s so slow 
> under OS X that it’s pretty much unusable, even if you can get it to boot and 
> run.
>
> However Mac-On_Linux using KVM is pretty close to native speeds, so I don’t 
> think it’s an issue with KVM, I think it’s an issue with Qemu-ppc.
>
> Should the softmmu be active in KVM mode?
>
> I don’t know if the CPU’s MMU is handed to the guest with KVM, but I suspect 
> there is a conflict, and we are not properly handling memory management in KVM 
> mode on PPC.

Can you be specific about the PPC CPU and versions of OS X you are using here? I 
believe MoL has extra optimisations to improve running OS X under virtualisation, but 
Alex (added as CC) will be able to give you a bit more information.


ATB,

Mark.