If you have odd Intel or AMD hardware, I'd appreciate if you could test my disk image which recursively launches nested KVM until something breaks:
http://rwmj.wordpress.com/2014/07/03/super-nested-kvm/#content FWIW: * AMD FX(tm)-8320 Eight-Core Processor: L3 guest fails to boot with [ 30.769000] BUG: unable to handle kernel NULL pointer dereference at 0000000000000180 [ 30.769000] IP: [<ffffffff810be871>] __queue_work+0x41/0x4e0 * Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz [Sandybridge]: L4 guest either hangs very early in boot, or is so slow that it makes no visible progress. There's also a TCG-only mode, but the test ran so slowly as to be inconclusive. I might leave it going overnight. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html
