Comment # 25 on bug 1219180 from Claudio Fontana

(In reply to Fabian Vogt from comment #24)
> (In reply to Claudio Fontana from comment #23)
> > Be careful that specifying an exact cpu as you are doing here
> > 
> > -cpu cortex-a72
> > 
> > is going to be very dependent on the exact machine you are going to run on.
> > The meaning of -cpu is different than on x86.
> 
> Not sure what you mean by that.

I mean that when using KVM, named cpu models are not really working for ARM.

See: https://qemu-project.gitlab.io/qemu/system/arm/cpu-features.html

> 
> > Does -cpu host work too? Because if it doesn't that is something we really
> > want to fix.
> 
> Without KVM there's no -cpu host:

Yes. What I am saying here is:

* when using KVM, do not use qemu-kvm. The proper way to use it is
qemu-system-aarch64 -accel kvm .


> 
> > qemu-system-aarch64 -cpu host -M virt
> qemu-system-aarch64: unable to find CPU model 'host'
> 
> > Again, that is the supported and recommended option to use for ARM AArch64,
> > I shared the relevant links above.

On the original request, I don't see anything here to do.

We know that virtio-gpu-pci works, and we see it working both with KVM and TCG.

I continue to recommend to test on actual hardware with KVM, and not with TCG,
because that is what is actually supported by us for customers running actual
workloads.

I do not see anything to do here, can we close?