I am running the public beta of Mac - Big Sur public beta 3. I see that VMWare Fusion has full Big Sur support based on the website. Currently, I'm trying to run nested virtualization on a Ubuntu-20.04 instance and i'm getting the error "VMware Fusion does not support nested virtualization on this host. Module 'HV' power on failed. Failed to start the virtual machine"
I have enabled hypervisor applications in the virtual machine under Processors and memory.
Is there anything I need to do in order to have this run successfully?
Thanks!
I don't know if this will help or not (and I do not profess to be a QEMU expert).
I'm working with the 22H2 Fusion Tech Preview on Monterey 12.5.1 running on a 2014 Mac mini. I had built an openSUSE Tumbleweed VM, and wanted to test nested virtualization. I chose to virtualize another Tumbleweed instance using QEMU in the VM. Yes, I set the appropriate settings in the Fusion VM to allow nested virtualization.
I experienced this same issue of failure to write to the MSR that others have reported here. I was however able to get the QEMU VM to run.
I found that if I unchecked the "copy host CPU configuration" option in the VM's Virtual Machine Manager GUI (virt-manager) , and set it to "Hypervisor Default" rather than host-passthrough
the nested VM would boot without getting the error. I can't evaluate how the resulting VM performs since I'm on an 8GB and 2CPU Mac. It didn't seem to perform badly, though, even with the restricted resources.
Here's the snippet of the xml file that's created with this config if it helps (again, I'm not a QEMU guru).
<domain type="kvm">
<name>opensusetumbleweed</name>
<uuid>c8988ca9-e067-4e47-85b7-b40c63682045</uuid>
<metadata>
<libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
<libosinfo:os id="http://opensuse.org/opensuse/tumbleweed"/>
</libosinfo:libosinfo>
</metadata>
<memory unit="KiB">2097152</memory>
<currentMemory unit="KiB">2097152</currentMemory>
<vcpu placement="static">1</vcpu>
<os firmware="efi">
<type arch="x86_64" machine="pc-q35-7.0">hvm</type>
<bootmenu enable="yes"/>
</os>
<features>
<acpi/>
<apic/>
<vmport state="off"/>
</features>
<cpu mode="custom" match="exact" check="none">
<model fallback="forbid">qemu64</model>
</cpu>
<clock offset="utc">
<timer name="rtc" tickpolicy="catchup"/>
<timer name="pit" tickpolicy="delay"/>
<timer name="hpet" present="no"/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled="no"/>
<suspend-to-disk enabled="no"/>
</pm>