Re: [PATCH v2 07/11] KVM: x86: add a delayed hardware NMI injection interface

[Sean Christopherson]

On Sat, Jan 28, 2023, Sean Christopherson wrote:
> On Tue, Nov 29, 2022, Maxim Levitsky wrote:
> > @@ -10015,13 +10022,34 @@ static void process_nmi(struct kvm_vcpu *vcpu)
> >  	 * Otherwise, allow two (and we'll inject the first one immediately).
> >  	 */
> >  	if (static_call(kvm_x86_get_nmi_mask)(vcpu) || vcpu->arch.nmi_injected)
> > -		limit = 1;
> > +		limit--;
> > +
> > +	/* Also if there is already a NMI hardware queued to be injected,
> > +	 * decrease the limit again
> > +	 */
> 
> 	/*
> 	 * Block comment ...
> 	 */
> 
> > +	if (static_call(kvm_x86_get_hw_nmi_pending)(vcpu))
> 
> I'd prefer "is_hw_nmi_pending()" over "get", even if it means not pairing with
> "set".  Though I think that's a good thing since they aren't perfect pairs.

Thinking more, I vote for s/hw_nmi/vnmi.  "hardware" usually means actual hardware,
i.e. a pending NMI for the host.