Hi,
I´m doing some research on Nested Virtualization with KVM and Xen. My
cpu on bare-metal system is a Opteron_G4 --> (AMD Opteron 4280).
qemu-version 1.0; libvirt 0.9.12
For nesting KVM in KVM I´m adding the <cpu mode='host-passthrough'/>
command to the XML-File of the VM on Layer 0. So I´m able to install KVM
in KVM and create nested guests at Layer 2.
L2 --> Nested VM
L1 --> KVM / XEN
L0 --> KVM
If i try the same with installing Xen in the VM on Layer 1 Xen don´t
boot and I get following error:
Panic on CPU 0:
GENERAL PROTECTION FAULT
[error_code=0000]
If I remove <cpu mode='host-passthrough'/> command from the VM´s XML Xen
boot is successful and Nesting Xen in KVM works!
May this problem depends on the following problem -->
https://bugzilla.redhat.com/show_bug.cgi?id=804224
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