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KVM: x86: Introduce helper to check if vector is set in Hyper-V SynIC

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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: Maxim Levitsky <mlevitsk@redhat.com>
Tested-by: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20231205103630.1391318-6-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Vitaly Kuznetsov 2023-12-05 11:36:19 +01:00 committed by Sean Christopherson
parent 16e880bfa6
commit 0659262a26
2 changed files with 6 additions and 2 deletions
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5
arch/x86/kvm/hyperv.h
View File

@ -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) &&

3
arch/x86/kvm/lapic.c
View File

@ -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);