[Bug 1494602] Re: qemu-system-x86 nested virtualisation is broken on AMD system

[Stefan Bader]

Did I understand this right to be a combination of roughly 14.04
(Trusty) as base with (probably both through the cloud archive) a
libvirt version that appears to closest match with 15.04 (Vivid) and
qemu at 15.10 (Wily) level?

Unfortunately I cannot recreate the same results as I only got a fam 10h
model 09h host. For that I get the svm flag inside the guest on native
Trusty, Vivid, and Wily. However nested is actually broken for all as
cpuid function 8000000a seems not implemented in any qemu version (2.0.0
+dfsg-2ubuntu1.18 ... 1:2.3+dfsg-5ubuntu6).

I have to check what the G4 type (from fam 16h model 02h) would yield.
Just also wondering whether in the case of not dropping svm the kvm
module actually loads or also fails on cpuid 8000000Ah.

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Title:
  qemu-system-x86 nested virtualisation is broken on  AMD system

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