Commit 0659262a authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Sean Christopherson
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KVM: x86: Introduce helper to check if vector is set in Hyper-V SynIC 



As a preparation to making Hyper-V emulation optional, create a dedicated
kvm_hv_synic_has_vector() helper to avoid extra ifdefs in lapic.c.

No functional change intended.

Reviewed-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
Tested-by: default avatarJeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20231205103630.1391318-6-vkuznets@redhat.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 16e880bf

arch/x86/kvm/hyperv.h

+5 −0
Original line number Diff line number Diff line
@@ -105,6 +105,11 @@ int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint); 
void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);

int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages);



static inline bool kvm_hv_synic_has_vector(struct kvm_vcpu *vcpu, int vector)

{

	return to_hv_vcpu(vcpu) && test_bit(vector, to_hv_synic(vcpu)->vec_bitmap);

}



static inline bool kvm_hv_synic_auto_eoi_set(struct kvm_vcpu *vcpu, int vector)

{

	return to_hv_vcpu(vcpu) &&

arch/x86/kvm/lapic.c

+1 −2
Original line number Diff line number Diff line
@@ -1475,8 +1475,7 @@ static int apic_set_eoi(struct kvm_lapic *apic) 
	apic_clear_isr(vector, apic);

	apic_update_ppr(apic);



	if (to_hv_vcpu(apic->vcpu) &&

	    test_bit(vector, to_hv_synic(apic->vcpu)->vec_bitmap))

	if (kvm_hv_synic_has_vector(apic->vcpu, vector))

		kvm_hv_synic_send_eoi(apic->vcpu, vector);



	kvm_ioapic_send_eoi(apic, vector);