Re: [libvirt-users] Nested KVM: L0 guest produces kernel BUG on wakeup from managed save (while a nested VM is running)
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(a)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
(I also didn't have permissions to add external links; had to get that
sorted out with the admin.)
> You wrote: "L2...which does no further
virtualization". Not quite true
> — "under right circumstances" (read: sufficiently huge machine with tons
> of RAM), L2 _can_ in turn L3. :-)
Insert "normally" between "which" and "does", then. :)
:-)
> Last time I checked (this morning), Rich W.M. Jones had 4 levels
of
> nesting tested with the 'supernested' program[1] he wrote. (Related
> aside: This program is packaged it as part of 2016 QEMU Advent
> Calendar[2] -- if you want to play around on a powerful test machine
> with tons of free memory.)
>
> [1] http://git.annexia.org/?p=supernested.git;a=blob;f=README
> [2] http://www.qemu-advent-calendar.org/2016/#day-13
Interesting, thanks for the pointer!
Cheers,
Florian
--
/kashyap