diff options
| -rw-r--r-- | virt/kvm/ioapic.c | 46 | ||||
| -rw-r--r-- | virt/kvm/ioapic.h | 5 | ||||
| -rw-r--r-- | virt/kvm/irq_comm.c | 49 |
3 files changed, 49 insertions, 51 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index 7c2cb2b..ea268a8 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -161,45 +161,6 @@ static void ioapic_inj_nmi(struct kvm_vcpu *vcpu) kvm_vcpu_kick(vcpu); } -void kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest, - u8 dest_mode, unsigned long *mask) -{ - int i; - struct kvm *kvm = ioapic->kvm; - struct kvm_vcpu *vcpu; - - ioapic_debug("dest %d dest_mode %d\n", dest, dest_mode); - - *mask = 0; - if (dest_mode == 0) { /* Physical mode. */ - if (dest == 0xFF) { /* Broadcast. */ - for (i = 0; i < KVM_MAX_VCPUS; ++i) - if (kvm->vcpus[i] && kvm->vcpus[i]->arch.apic) - *mask |= 1 << i; - 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, dest)) { - if (vcpu->arch.apic) - *mask = 1 << i; - break; - } - } - } else if (dest != 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, dest)) - *mask |= 1 << vcpu->vcpu_id; - } - ioapic_debug("mask %x\n", *mask); -} - static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq) { union kvm_ioapic_redirect_entry entry = ioapic->redirtbl[irq]; @@ -213,13 +174,12 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq) entry.fields.delivery_mode, entry.fields.vector, entry.fields.trig_mode); - bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); - /* Always delivery PIT interrupt to vcpu 0 */ #ifdef CONFIG_X86 - if (irq == 0) + if (irq == 0) { + bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); __set_bit(0, deliver_bitmask); - else + } else #endif kvm_get_intr_delivery_bitmask(ioapic, &entry, deliver_bitmask); diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h index 7275f87..c8032ab 100644 --- a/virt/kvm/ioapic.h +++ b/virt/kvm/ioapic.h @@ -70,7 +70,8 @@ void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode); int kvm_ioapic_init(struct kvm *kvm); int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level); void kvm_ioapic_reset(struct kvm_ioapic *ioapic); -void kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest, - u8 dest_mode, unsigned long *mask); +void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, + union kvm_ioapic_redirect_entry *entry, + unsigned long *deliver_bitmask); #endif diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index d165e05..1c6ff6d 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -47,15 +47,54 @@ void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, union kvm_ioapic_redirect_entry *entry, unsigned long *deliver_bitmask) { + int i; + struct kvm *kvm = ioapic->kvm; struct kvm_vcpu *vcpu; - kvm_ioapic_get_delivery_bitmask(ioapic, entry->fields.dest_id, - entry->fields.dest_mode, - deliver_bitmask); + bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); + + 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); + } + switch (entry->fields.delivery_mode) { case IOAPIC_LOWEST_PRIORITY: + /* Select one in deliver_bitmask */ vcpu = kvm_get_lowest_prio_vcpu(ioapic->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: @@ -65,7 +104,7 @@ void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, if (printk_ratelimit()) printk(KERN_INFO "kvm: unsupported delivery mode %d\n", entry->fields.delivery_mode); - *deliver_bitmask = 0; + bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); } } @@ -80,8 +119,6 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, BUG_ON(!ioapic); - bitmap_zero(deliver_bitmask, KVM_MAX_VCPUS); - entry.bits = 0; entry.fields.dest_id = (e->msi.address_lo & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT; |
