Re: 86_64 host is not supported by hypervisor - 2024

["Daniel P. Berrangé" <berrange@redhat.com>]

On Wed, Jan 08, 2025 at 08:51:52AM -0600, Adam wrote:
> TWIMC:
> 
> Had an issue with VM networking that turned out to be the host. In the
> process of troubleshooting, I
> 
>     sudo apt reinstall libvirt   (and other QEMU/KVM virtualization
> dependencies)
> 
> Now I am getting this particular error when trying to use the
> host-passthrough for the CPU.
> 
> "error: unsupported configuration: CPU mode 'host-passthrough' for x86_64
> qemu domain on x86_64 host is not supported by hypervisor"
> 
> This was working previously.  I found that two other domains are responding
> the same.
> 
> The configuration in xml file is:
> 
>     <metadata>

You've omitted the part of the config that shows whether the
guest is configured for 'tcg' or 'kvm'. Given your error
message my guess is that you've got a 'tcg' based guest,
for which '-cpu host' is not available.

With regards,
Daniel
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