aboutsummaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
authorGleb Natapov <gleb@redhat.com>2009-02-23 12:57:11 +0200
committerAvi Kivity <avi@redhat.com>2009-03-24 11:03:11 +0200
commit71450f78853b82d55cda4e182c9db6e26b631485 (patch)
treef197d4a944382137eb1cff9f3e4f075491bb8321 /virt
parentc5bc22424021cabda862727fb3f5098b866f074d (diff)
downloadlinux-linaro-stable-71450f78853b82d55cda4e182c9db6e26b631485.tar.gz
KVM: Report IRQ injection status for MSI delivered interrupts
Return number of CPUs interrupt was successfully injected into or -1 if none. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/irq_comm.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index be8aba791554..c516d618d389 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -48,7 +48,7 @@ static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e,
static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int level)
{
- int vcpu_id;
+ int vcpu_id, r = -1;
struct kvm_vcpu *vcpu;
struct kvm_ioapic *ioapic = ioapic_irqchip(kvm);
int dest_id = (e->msi.address_lo & MSI_ADDR_DEST_ID_MASK)
@@ -73,7 +73,7 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector,
deliver_bitmask);
if (vcpu != NULL)
- kvm_apic_set_irq(vcpu, vector, trig_mode);
+ r = kvm_apic_set_irq(vcpu, vector, trig_mode);
else
printk(KERN_INFO "kvm: null lowest priority vcpu!\n");
break;
@@ -83,14 +83,17 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
continue;
deliver_bitmask &= ~(1 << vcpu_id);
vcpu = ioapic->kvm->vcpus[vcpu_id];
- if (vcpu)
- kvm_apic_set_irq(vcpu, vector, trig_mode);
+ if (vcpu) {
+ if (r < 0)
+ r = 0;
+ r += kvm_apic_set_irq(vcpu, vector, trig_mode);
+ }
}
break;
default:
break;
}
- return 1;
+ return r;
}
/* This should be called with the kvm->lock mutex held