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KVM: SVM: Add helper to perform final AVIC "kick" of single vCPU

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Add a helper to perform the final kick, two instances of the ICR decoding
is one too many.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20230106011306.85230-17-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2023-01-06 01:12:49 +00:00 committed by Paolo Bonzini
parent 8578e4512d
commit 1d22a597b3
1 changed files with 13 additions and 12 deletions
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25
arch/x86/kvm/svm/avic.c
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@ -317,6 +317,16 @@ void avic_ring_doorbell(struct kvm_vcpu *vcpu)
put_cpu();
}
static void avic_kick_vcpu(struct kvm_vcpu *vcpu, u32 icrl)
{
vcpu->arch.apic->irr_pending = true;
svm_complete_interrupt_delivery(vcpu,
icrl & APIC_MODE_MASK,
icrl & APIC_INT_LEVELTRIG,
icrl & APIC_VECTOR_MASK);
}
/*
* A fast-path version of avic_kick_target_vcpus(), which attempts to match
* destination APIC ID to vCPU without looping through all vCPUs.
@ -415,11 +425,7 @@ static int avic_kick_target_vcpus_fast(struct kvm *kvm, struct kvm_lapic *source
if (unlikely(!target_vcpu))
return 0;
target_vcpu->arch.apic->irr_pending = true;
svm_complete_interrupt_delivery(target_vcpu,
icrl & APIC_MODE_MASK,
icrl & APIC_INT_LEVELTRIG,
icrl & APIC_VECTOR_MASK);
avic_kick_vcpu(target_vcpu, icrl);
return 0;
}
@ -443,13 +449,8 @@ static void avic_kick_target_vcpus(struct kvm *kvm, struct kvm_lapic *source,
*/
kvm_for_each_vcpu(i, vcpu, kvm) {
if (kvm_apic_match_dest(vcpu, source, icrl & APIC_SHORT_MASK,
dest, icrl & APIC_DEST_MASK)) {
vcpu->arch.apic->irr_pending = true;
svm_complete_interrupt_delivery(vcpu,
icrl & APIC_MODE_MASK,
icrl & APIC_INT_LEVELTRIG,
icrl & APIC_VECTOR_MASK);
}
dest, icrl & APIC_DEST_MASK))
avic_kick_vcpu(vcpu, icrl);
}
}