From 343f94fe4d16ec898da77720c03da9e09f8523d2 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Thu, 5 Mar 2009 16:34:54 +0200 Subject: KVM: consolidate ioapic/ipi interrupt delivery logic Use kvm_apic_match_dest() in kvm_get_intr_delivery_bitmask() instead of duplicating the same code. Use kvm_get_intr_delivery_bitmask() in apic_send_ipi() to figure out ipi destination instead of reimplementing the logic. Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- virt/kvm/irq_comm.c | 74 +++++++++++++++-------------------------------------- 1 file changed, 21 insertions(+), 53 deletions(-) (limited to 'virt/kvm/irq_comm.c') diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index 35397a569b2..e43701c0a5c 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -43,67 +43,35 @@ static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e, return kvm_ioapic_set_irq(kvm->arch.vioapic, e->irqchip.pin, level); } -void kvm_get_intr_delivery_bitmask(struct kvm *kvm, - union kvm_ioapic_redirect_entry *entry, - unsigned long *deliver_bitmask) +void kvm_get_intr_delivery_bitmask(struct kvm *kvm, struct kvm_lapic *src, + int dest_id, int dest_mode, bool low_prio, int short_hand, + unsigned long *deliver_bitmask) { int i; struct kvm_vcpu *vcpu; + if (dest_mode == 0 && dest_id == 0xff && low_prio) + printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n"); + bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); + for (i = 0; i < KVM_MAX_VCPUS; i++) { + vcpu = kvm->vcpus[i]; - if (entry->fields.dest_mode == 0) { /* Physical mode. */ - if (entry->fields.dest_id == 0xFF) { /* Broadcast. */ - for (i = 0; i < KVM_MAX_VCPUS; ++i) - if (kvm->vcpus[i] && kvm->vcpus[i]->arch.apic) - __set_bit(i, deliver_bitmask); - /* Lowest priority shouldn't combine with broadcast */ - if (entry->fields.delivery_mode == - IOAPIC_LOWEST_PRIORITY && printk_ratelimit()) - printk(KERN_INFO "kvm: apic: phys broadcast " - "and lowest prio\n"); - return; - } - for (i = 0; i < KVM_MAX_VCPUS; ++i) { - vcpu = kvm->vcpus[i]; - if (!vcpu) - continue; - if (kvm_apic_match_physical_addr(vcpu->arch.apic, - entry->fields.dest_id)) { - if (vcpu->arch.apic) - __set_bit(i, deliver_bitmask); - break; - } - } - } else if (entry->fields.dest_id != 0) /* Logical mode, MDA non-zero. */ - for (i = 0; i < KVM_MAX_VCPUS; ++i) { - vcpu = kvm->vcpus[i]; - if (!vcpu) - continue; - if (vcpu->arch.apic && - kvm_apic_match_logical_addr(vcpu->arch.apic, - entry->fields.dest_id)) - __set_bit(i, deliver_bitmask); - } + if (!vcpu || !kvm_apic_present(vcpu)) + continue; - switch (entry->fields.delivery_mode) { - case IOAPIC_LOWEST_PRIORITY: - /* Select one in deliver_bitmask */ - vcpu = kvm_get_lowest_prio_vcpu(kvm, - entry->fields.vector, deliver_bitmask); - bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); - if (!vcpu) - return; - __set_bit(vcpu->vcpu_id, deliver_bitmask); - break; - case IOAPIC_FIXED: - case IOAPIC_NMI: - break; - default: - if (printk_ratelimit()) - printk(KERN_INFO "kvm: unsupported delivery mode %d\n", - entry->fields.delivery_mode); + if (!kvm_apic_match_dest(vcpu, src, short_hand, dest_id, + dest_mode)) + continue; + + __set_bit(i, deliver_bitmask); + } + + if (low_prio) { + vcpu = kvm_get_lowest_prio_vcpu(kvm, 0, deliver_bitmask); bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); + if (vcpu) + __set_bit(vcpu->vcpu_id, deliver_bitmask); } } -- cgit v1.2.3