KVM: x86: Rename kvm_apic_has_events() to make it INIT/SIPI specific

Rename kvm_apic_has_events() to kvm_apic_has_pending_init_or_sipi() so
that it's more obvious that "events" really just means "INIT or SIPI".

Opportunistically clean up a weirdly worded comment that referenced
kvm_apic_has_events() instead of kvm_apic_accept_events().

No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220921003201.1441511-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/lapic.h

@@ -224,7 +224,7 @@ static inline bool kvm_vcpu_apicv_active(struct kvm_vcpu *vcpu)
 	return lapic_in_kernel(vcpu) && vcpu->arch.apic->apicv_active;
 }
 
-static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu)
+static inline bool kvm_apic_has_pending_init_or_sipi(struct kvm_vcpu *vcpu)
 {
 	return lapic_in_kernel(vcpu) && vcpu->arch.apic->pending_events;
 }

arch/x86/kvm/x86.c

@@ -11922,8 +11922,8 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
 		struct fpstate *fpstate = vcpu->arch.guest_fpu.fpstate;
 
 		/*
-		 * To avoid have the INIT path from kvm_apic_has_events() that be
-		 * called with loaded FPU and does not let userspace fix the state.
+		 * All paths that lead to INIT are required to load the guest's
+		 * FPU state (because most paths are buried in KVM_RUN).
 		 */
 		if (init_event)
 			kvm_put_guest_fpu(vcpu);
@@ -12767,7 +12767,7 @@ static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
 	if (!list_empty_careful(&vcpu->async_pf.done))
 		return true;
 
-	if (kvm_apic_has_events(vcpu))
+	if (kvm_apic_has_pending_init_or_sipi(vcpu))
 		return true;
 
 	if (vcpu->arch.pv.pv_unhalted)