On Wed, Apr 29, 2020 at 06:58:45PM +0200, Paolo Bonzini wrote: > On 29/04/20 18:45, Sean Christopherson wrote: > > > > Can you just drop 9/13, "Prioritize SMI over nested IRQ/NMI" from kvm/queue? > > It's probably best to deal with this in a new series rather than trying to > > squeeze it in. > > With AMD we just have IRQ/NMI/SMI, and it's important to handle SMI in
Ah, forgot about that angle. > check_nested_events because you can turn SMIs into vmexit without stuff > such as dual-monitor treatment. On the other hand there is no MTF and > we're not handling exceptions yet. So, since SMIs should be pretty rare > anyway, I'd rather just add a comment detailing the correct order and > why we're not following it. The minimal fix would be to move SMI above > the preemption timer, right? Yep, that works for now. I'd still like to do a full fix for SMI and INIT. Correctness aside, I think/hope the changes I have in mind will make it easier to connect the dots betwen KVM's event priority and the SDM's event priority. But that can definitely wait for 5.9.
