Re: [libvirt PATCH v3 5/5] qemu: enable asynchronous teardown on s390x hosts by default
On Wed, 5 Jul 2023 13:26:32 +0100
Daniel P. Berrangé <berrange(a)redhat.com> wrote:
[...]
> > I rather think mgmt apps need to explicitly opt-in to async
teardown,
> > so they're aware that they need to take account of delayed RAM
> > availablity in their accounting / guest placement logic.
>
> what would you think about enabling it by default only for guests that
> are capable to run in Secure Execution mode?
IIUC, that's basically /all/ guests if running on new enough hardware
with prot_virt=1 enabled on the host OS, so will still present challenges
to mgmt apps needing to be aware of this behaviour AFAICS.
I think there is some fencing still? I don't think it's automatic
With regards,
Daniel