Package: qemu-system Version: 1.1.2+dfsg-3 Nested KVM guests don't work with qemu-system (qemu-system-x86_64) on amd64 arch. When the nested guest is started, the guest on physical host crashes (and consumes all available CPU time available from it from this onwards). There are no error messages, just a hard crash.
Nested KVM guests run fine if the guest on physical hardware uses qemu-kvm (same version) instead. To use nested guests, one must pass nested=1 argument to kvm-intel (or kvm-amd I guess) to enable nested guests and use -cpu core2duo,+vmx option for qemu-kvm to the guest that's to be run on the physical machine. This machine has an Intel Core 2 Duo CPU. While this issue as itself isn't grave and might well be a property of the upstream QEMU, I guess that eventually qemu-kvm will be replaced by qemu-system, so it might be worth tracking this to ensure nested guests work fine at that time. Other than that, I'm happily using qemu-system-x86_64 for my KVM guests where I don't need nested guest. Thanks. -- Kind regards, Sakari Ailus sakari.ai...@iki.fi -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
