UML runs as a user-process so it can quite easily be ran inside of another hypervisor, for instance inside a KVM instance. UML passes through the CPUID from the host machine so in this case detect_vm incorrectly identifies as running under KVM. So check we are running a UML kernel first, before we check any other hypervisors. Resolves: #17754 Signed-off-by: Christopher Obbard <chris.obbard@collabora.com>
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