Commit dfd146fc authored by Wanpeng Li's avatar Wanpeng Li Committed by Paolo Bonzini

KVM: LAPIC: micro-optimize fixed mode ipi delivery

This patch optimizes redundancy logic before fixed mode ipi is delivered
in the fast path, broadcast handling needs to go slow path, so the delivery
mode repair can be delayed to before slow path.
Signed-off-by: default avatarWanpeng Li <wanpengli@tencent.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 1e9e2622
...@@ -52,15 +52,15 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src, ...@@ -52,15 +52,15 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
unsigned long dest_vcpu_bitmap[BITS_TO_LONGS(KVM_MAX_VCPUS)]; unsigned long dest_vcpu_bitmap[BITS_TO_LONGS(KVM_MAX_VCPUS)];
unsigned int dest_vcpus = 0; unsigned int dest_vcpus = 0;
if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
return r;
if (irq->dest_mode == APIC_DEST_PHYSICAL && if (irq->dest_mode == APIC_DEST_PHYSICAL &&
irq->dest_id == 0xff && kvm_lowest_prio_delivery(irq)) { irq->dest_id == 0xff && kvm_lowest_prio_delivery(irq)) {
printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n"); printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n");
irq->delivery_mode = APIC_DM_FIXED; irq->delivery_mode = APIC_DM_FIXED;
} }
if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
return r;
memset(dest_vcpu_bitmap, 0, sizeof(dest_vcpu_bitmap)); memset(dest_vcpu_bitmap, 0, sizeof(dest_vcpu_bitmap));
kvm_for_each_vcpu(i, vcpu, kvm) { kvm_for_each_vcpu(i, vcpu, kvm) {
......
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