Re: [PATCH v2 0/7] KVM: nVMX: Fixes for nested state migration when eVMCS is in use

[Paolo Bonzini]

On 27/05/21 16:11, Maxim Levitsky wrote:
> > Using 'nested_run_pending=1' perhaps? Or, we can get back to 'vm_bugged'
> > idea and kill the guest immediately if something forces such an exit.
> Exactly, this is my idea. Set the nested_run_pending=1 always after the migration
> It shoudn't cause any issues and it would avoid cases like that.
>
> That variable can then be renamed too to something like 'nested_vmexit_not_allowed'
> or something like that.
>
> Paolo, what do you think?

(If it works :)) that's clever.  It can even be set unconditionally on 
the save side and would even work for new->old migration.

Paolo