Finished testing nested AMD KVM (AMD FX(tm)-8350). Cosmic is okay, all the others are "broken" for nested KVM. I just discovered it seems to be a kernel issue since I installed 4.19 in Xenial (1st level) running on top of Debian Sid (4.19) and it was able to boot my nested KVM guest.
I might have to bisect kernel for this :\, maybe add this to server-next somehow ? (Unsure because of possible LTS openstack releases that might be affected by this).
@Christian,
Finished testing nested AMD KVM (AMD FX(tm)-8350). Cosmic is okay, all the others are "broken" for nested KVM. I just discovered it seems to be a kernel issue since I installed 4.19 in Xenial (1st level) running on top of Debian Sid (4.19) and it was able to boot my nested KVM guest.
I might have to bisect kernel for this :\, maybe add this to server-next somehow ? (Unsure because of possible LTS openstack releases that might be affected by this).
Cheers o/