[libvirt-users] Nested KVM: L0 guest produces kernel BUG on wakeup from managed save (while a nested VM is running)

[Florian Haas]

On Mon, Feb 12, 2018 at 10:27 AM, Kashyap Chamarthy <kchamart at redhat.com> wrote:
> On Fri, Feb 09, 2018 at 12:02:25PM +0100, Florian Haas wrote:
>> On Fri, Feb 9, 2018 at 11:48 AM, Kashyap Chamarthy <kchamart at redhat.com> wrote:
>
> [...]
>
>> > I've made some minor edits to clarify a bunch of bits, and a link to the
>> > Kernel doc about Intel nVMX.  (Hope that looks fine.)
>>
>> I'm sure they it does, but just so you know I currently don't see any
>> edits from you on the Nested Guests page. Are you sure you
>> saved/published your changes?
>
> Thanks for catching that.  _Now_ it's updated.
>
>     https://www.linux-kvm.org/page/Nested_Guests

Got it. Thanks for those additions!

>
> (I also didn't have permissions to add external links; had to get that
> sorted out with the admin.)

Right, I saw that on my first edit attempt too.

I took the liberty to back-reference this wiki page from those two
bugzilla entries too (the kernel.org one and the Red Hat one). Since
as I must confess, I don't follow KVM development on a day-to-day
basis, I'm hopeful that at least one of those bugs will get updated
triggering a notification, so that I can update that page once
migration in combination with nVMX does work.

I've also added a link to
https://bugzilla.kernel.org/show_bug.cgi?id=53851 to the wiki — 5
years old just this week, as it happens. :)

Thanks for everyone's help explaining this issue to me!

Cheers,
Florian